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TwitterMilitary Map of Northern Virgnia 1865
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TwitterThis map provides the location of both park amenities and trail networks for parks in and around Leesburg, Virginia. The parks vary in size, from the 1/2 acre Catoctin Skate Park to the 138 acre Ida Lee Park. They are all open to the public from dawn to dusk. The amenity information shown was collected during a crowdsourcing effort between AOL staff and Loudoun County Office of Mapping & Geographic Information in May 2015 and individual Mapping & Geographic Information and Parks and Recreation staff in October 2015. Crowdsourcing involves groups of volunteers collecting data and information & was specifically undertaken on AOL's Monster Help Day, which is a world-wide event that encourages volenteerism. This was the third collaboration between AOL staff and Office of Mapping & Geographic Information to collect park amenity information in Loudoun County, which occurred in both early 2013 and 2014 on previous AOL Monster Help Days. The parks shown are administered by the Town of Leesburg, Loudoun County Parks and Recreation, and Northern Virginia Regional Park Authority.
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TwitterTrails within and around Fairfax County that are not maintained by Fairfax County. Contributors include: the National Park Service, Town of Herndon, Reston Association, City of Fairfax, Burke Center Conservancy, the Northern Virginia Regional Park Authority, and others.
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Twitterhttps://www.loc.gov/item/gvhs01.vhs00317/TitleMap of Albemarle : Made under the direction of Maj. A.H. Campbell Capt. Engs. in charge of Top. Dept. D.N.V. from surveys and reconnaissancesNamesConfederate States of America. Army. Dept. of Northern Virginia. Chief Engineer's Office.Campbell, Albert H. (Albert Henry), 1826-1899.Dwight, C. S.Created / Published[S.l. : Chief Engineer's Office D.N.V., 1864].Headings- Gilmer, Jeremy Francis,--1818-1883--Map collection- Albemarle County (Va.)--History--Civil War, 1861-1865--Maps- United States--Virginia--Albemarle CountyNotes- "Map from the Confederate Engineer Bureau in Richmond, Va. General J.F. Gilmer, Chief Engineer[.] Presented to the Virginia Historical Society by his only daughter, Mrs. J.F. Minis, Sav[ana]h, Ga."--Note on map.- Forms part of the Gilmer Map Collection.- Relief shown by hachures.- Shows towns, waterways, roads, geographical features and land owners.- Available also through the Library of Congress web site as a raster image.- Gift of Mrs. Louisa Porter (Gilmer) Minis (i.e., Mrs. J. F. Minis), Savannah, Ga., in 1911.- Manuscripts o.s. Library of Congress, Geography and Map Division.
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TwitterIn December of 1829, nine Lucases of Loudoun County left Northern Virginia for Hampton Roads, where they boarded a brig bound for the western coast of Africa. Two of the men, Mars and Jesse Lucas, had recently been emancipated by Albert and Townsend Heaton of Loudoun County. Over the next decade, the two sets of brothers corresponded about family back home in Loudoun and the challenges of life in Liberia. Seven of those letters are in the Loudoun Museum in Leesburg, Virginia.
This Story Map includes excerpts (and links to copies of) the letters, the locations mentioned within them, and a little about the events that led the Lucas family and other emancipated people to move across the Atlantic for a new life. It was developed as a collaboration among Museum staff, volunteers, and staff from the Loudoun County Office of Mapping and Information.
If you have questions, please contact the Loudoun Museum. For a shortcut to this Story Map, please visit loudounmuseum.org/lucas-heaton....
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TwitterVirginia LiDARThe Virginia LiDAR Inventory Web Mapping Application provides access to LiDAR point cloud and individual project metadata collected in the Commonwealth of Virginia according to the USGS 3DEP specification. Data is obtained from NOAA and USGS data portals. LiDAR Point Clouds are compressed for file storage and transfer. Informational Access Type:1) LiDAR Project Metadata: To download individual LiDAR project Metadata, click on a LiDAR inventory polygon for link to the host FTP site. Once at the host site, locate appropriate directory and .zip file to receive project documentation and accompanying project files. For use within ArcGIS, the geospatial grid and inventory data powering the VGIN LiDAR download inventory services can be downloaded under conversion and analysis resources below.2) LiDAR Point Clouds (Single): To download individual tiles, zoom in on the map until the tile grid appears. The VGIN Composite Geocoding service is available to use when querying by physical address, feature, or community anchor institution name. Click a tile to identify grid information for individual LiDAR Point clouds. Columns note where the LiDAR is hosted and what format is available for download. In many instances, multiple results are returned due to multiple file formats and flight years. If LiDAR data is missing spatial reference information please refer to the metadata in step 1 above. Tile grids are stacked so you will need to scroll through selections:3) LiDAR Point Clouds (Bulk): To download multiple files in a single FTP directory folder, which can be a necessity in many instances, consider the use of a multi-file download manager plugin to use with your browser in conjunction with the URLs provided on the LiDAR inventory polygon. If LiDAR data is missing spatial reference information please refer to the metadata in step 1 above. For use within ArcGIS, the geospatial grid and inventory data powering the VGIN LiDAR Download Inventory Services can be downloaded under conversion and resources below.Conversion and Resources:Convert to LAS from USGS/NOAA hosted .LAZ filesDownload LiDAR Inventory Data Project FootprintsDownload LiDAR Inventory Tile GridContact:For questions about the data please contact USGS For questions about the application please contact vbmp@vdem.virginia.gov
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TwitterFairfax Connector is the largest local bus system in the Northern Virginia region transporting approximately 26,000 passengers on 93 routes daily. This system map shows all Fairfax Connector routes in service.Contact: Fairfax County Department of Transportation (FCDOT)Data Accessibility: PublicUpdate Frequency: As needed
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TwitterThis dataset represents the boundaries of Fairfax County Potential Wetlands Areas. Applicants for many plan types are required to certify that all required wetlands permits will be acquired before land disturbance begins in a "wetlands statement". This data can assist property owners and plan preparers in preliminary identification of potential wetlands for which such permits would be necessary.
Applicants for Site Plans must complete the "Potential for Wetlands" information box on the site plan cover sheet. This data is referenced as the "County Potential Wetland Area Map" referred to by the site plan cover sheet.
Landowners and plan preparers should use this information in preliminary phases of projects to identify the need for further study of possible wetlands. This data does not replace the need for site-specific RPA delineation when required by code and does not replace other field analysis required when wetlands permits are necessary from the Army Corps of Engineers.
These areas were classified as Potential Wetlands by intersecting the datasets described below.
Datasets:
Less than 5% Slope: The 2018 Bare Earth Digital Elevation Model (DEM) was used to identify areas in the county with a slope value of 5% or less. Areas with this topography are more likely to be wetlands.
Hydric Soils: These soil types were identified in the 2018 Soils Map by Northern Virginia Soil & Water Conservation District. These are soil types that in an undrained condition, are saturated, flooded, or ponded long enough during a growing season to develop an anaerobic condition that supports the growth and regeneration of hydrophytic vegetation.
Impervious Surface: The assessment of impervious surface was derived using the 2017 Planimetric Data.
Contact: Land Development Services
Data Accessibility: Publicly Available
Update Frequency: As Needed
Last Revision Date: 11/16/2023
Creation Date: 11/16/2023
Layer Name: LDSAMGR.POTENTIAL_WETLANDS
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TwitterCC0 1.0 Universal Public Domain Dedicationhttps://creativecommons.org/publicdomain/zero/1.0/
License information was derived automatically
As included in this EnviroAtlas dataset, the community level domestic water use is calculated using locally available water use data per capita in gallons of water per day (GPD), distributed dasymetrically, and summarized by census block group. Domestic water use, as defined in this case, is intended to represent residential indoor and outdoor water use (e.g., cooking, hygiene, landscaping, pools, etc.) for primary residences (i.e., excluding second homes and tourism rentals). Three reports were used with city- or water supply authority- level domestic water demand data, in addition to county level data. The 2011 Northern Virginia Regional Water Supply Plan provides detailed publicly, privately, and self supplied water use and population served for 2007 and covers most of the Virginia side of the EnviroAtlas study area. The 2011 Fauquier County Regional Water Supply Plan provides detailed publicly, privately, and self supplied water use and population served for 2007 and covers Fauquier County, Virginia. The 2010 Washington Metropolitan Area Water Supply Reliability Study, Part 1 from the Interstate Commission on the Potomac River Basin provides detailed publicly, privately, and self supplied water use and population served for 2008 by water supplier for suppliers drawing from the Potomac River. Data from these reports were weighted across publicly, privately, and self-supplied sources by population served, resulting in a single water use estimate between 25 and 204 GPD for each of the subregions in the study area. This dataset was produced by the US EPA to support research and online mapping activities related to EnviroAtlas. EnviroAtlas (https://www.epa.gov/enviroatlas) allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the contiguous United States. The dataset is available as downloadable data (https://edg.epa.gov/data/Public/ORD/EnviroAtlas) or as an EnviroAtlas map service. Additional descriptive information about each attribute in this dataset can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).
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TwitterThis dataset combines the work of several different projects to create a seamless data set for the contiguous United States. Data from four regional Gap Analysis Projects and the LANDFIRE project were combined to make this dataset. In the northwestern United States (Idaho, Oregon, Montana, Washington and Wyoming) data in this map came from the Northwest Gap Analysis Project. In the southwestern United States (Colorado, Arizona, Nevada, New Mexico, and Utah) data used in this map came from the Southwest Gap Analysis Project. The data for Alabama, Florida, Georgia, Kentucky, North Carolina, South Carolina, Mississippi, Tennessee, and Virginia came from the Southeast Gap Analysis Project and the California data was generated by the updated California Gap land cover project. The Hawaii Gap Analysis project provided the data for Hawaii. In areas of the county (central U.S., Northeast, Alaska) that have not yet been covered by a regional Gap Analysis Project, data from the Landfire project was used. Similarities in the methods used by these projects made possible the combining of the data they derived into one seamless coverage. They all used multi-season satellite imagery (Landsat ETM+) from 1999-2001 in conjunction with digital elevation model (DEM) derived datasets (e.g. elevation, landform) to model natural and semi-natural vegetation. Vegetation classes were drawn from NatureServe's Ecological System Classification (Comer et al. 2003) or classes developed by the Hawaii Gap project. Additionally, all of the projects included land use classes that were employed to describe areas where natural vegetation has been altered. In many areas of the country these classes were derived from the National Land Cover Dataset (NLCD). For the majority of classes and, in most areas of the country, a decision tree classifier was used to discriminate ecological system types. In some areas of the country, more manual techniques were used to discriminate small patch systems and systems not distinguishable through topography. The data contains multiple levels of thematic detail. At the most detailed level natural vegetation is represented by NatureServe's Ecological System classification (or in Hawaii the Hawaii GAP classification). These most detailed classifications have been crosswalked to the five highest levels of the National Vegetation Classification (NVC), Class, Subclass, Formation, Division and Macrogroup. This crosswalk allows users to display and analyze the data at different levels of thematic resolution. Developed areas, or areas dominated by introduced species, timber harvest, or water are represented by other classes, collectively refered to as land use classes; these land use classes occur at each of the thematic levels. Raster data in both ArcGIS Grid and ERDAS Imagine format is available for download at http://gis1.usgs.gov/csas/gap/viewer/land_cover/Map.aspx Six layer files are included in the download packages to assist the user in displaying the data at each of the Thematic levels in ArcGIS. In adition to the raster datasets the data is available in Web Mapping Services (WMS) format for each of the six NVC classification levels (Class, Subclass, Formation, Division, Macrogroup, Ecological System) at the following links. http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Class_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Subclass_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Formation_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Division_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Macrogroup_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_Ecological_Systems_Landuse/MapServer
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Twitterhttps://www.incomebyzipcode.com/terms#TERMShttps://www.incomebyzipcode.com/terms#TERMS
A dataset listing the richest zip codes in Virginia per the most current US Census data, including information on rank and average income.
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TwitterThe physical location covered by an interagency, dispatch center for the effective coordination, mobilization and demobilization of emergency management resources. A dispatch center actively supports incidents within its boundaries and the resources assigned to those incidents. 1/11/2023 - Tabular and geospatial changes. USMTBFAC (Blackfeet Reservation) merged into USMTGDC (Great Falls Interagency Dispatch Center). USMTBFAC remains as 4th Tier Dispatch. USMTFHA (Flathead Reservation) merged into USMTMDC (Missoula Interagency Dispatch Center). USMTFHA remains as 4th Tier Dispatch. Changes made by Kat Sorenson, R1 Asst Aircraft Coordinator, and Kara Stringer, IRWIN Business Lead. Edits by JKuenzi. 1/10/2023 - Tabular and geospatial changes. Two islands on west edge of John Day Dispatch area (USORJDCC) absorbed into USORCOC Dispatch per direction from Kaleigh Johnson (Asst Ctr Mgr), Jada Altman (Central Oregon Center Mgr), and Jerry Messinger (Air Tactical Group Supervisor). Update made to Dispatch and Initial Attack Frequency Zone boundaries. Edits by JKuenzi, 11/08/2022 - Tabular and geospatial changes. Update made to Dispatch and Initial Attack Frequency Zone boundaries between Miles City Interagency Dispatch Center (USMTMCC) and Billings Interagency Dispatch Center (USMTBDC), along Big Horn and Rosebud County line near Little Wolf Mountains, per Kat Sorenson, R1 Asst Aircraft Coordinator, and Kelsey Pluhar, DNRC Asst. Center Manager at Miles City Interagency Dispatch Center. Area in Big Horn County is dispatched by MTMCC. Edits by JKuenzi, 09/06/2022-09/26/2022 - Geospatial and tabular changes in accordance with proposed GACC boundary re-alignments between Southern California and Great Basin in the state of Nevada. Boundary modified between CAOVCC (Owens Valley Interagency Communications Center) and NVSFC (Sierra Front Interagency Dispatch Center), specifically between Queen Valley and Mono Valley. The team making the change is made up of Southern Calif (JTomaselli) and Great Basin (GDingman) GACCs, with input from Ian Mills and Lance Rosen (BLM). Changes proposed will be put into effect for the 2023 calendar year, and will also impact alignments of Initial Attack Frequency Zone boundaries and GACC boundaries in the area described. Initial edits provided by Ian Mills and Daniel Yarborough. Final edits by JKuenzi, USFS. A description of the change is as follows: The northwest end of changes start approximately 1 mile west of Mt Olsen and approximately 0.5 mile south of the Virginia Lakes area. Head northwest passing on the northeast side of Red Lake and the south side of Big Virginia Lake to follow HWY 395 North east to CA 270. East through Bodie to the CA/NV state line. Follows the CA/NV State Line south to HWY CA 167/NV 359. East on NV359 to where the HWY intersects the corner of FS/BLM land. Follows the FS/BLM boundary to the east and then south where it ties into the current GACC boundary. 09/22/2022 - Tabular changes only. The DispLocation value of "Prineville, OR", was updated to "Redmond, OR", and the ContactPhone value was updated for Central Oregon Interagency Dispatch Ctr (USORCOC) per direction from Desraye Assali, Supervisory GIS Specialist in Region 6. The original correction had been made 9/30/2020, in the National Dispatch Office Location dataset, but had been missed in the National Dispatch Boundary dataset. Edits by JKuenzi, USFS. 09/07/2022 - 09/08/2022 - Tabular and geospatial changes. Multiple boundaries modified in Northern Rockies GACC to bring lines closer in accordance with State boundaries. Information provided by Don Copple, State Fire Planning & Intelligence Program Manager for Montana Dept of Natural Resources & Conservation (DNRC), Kathy Pipkin, Northern Rockies GACC Center Manager, and Kat Sorenson, R1 Asst Aircraft Coordinator. Edits by JKuenzi, USFS. The following changes were made:Boundary changes made to the following: Bitterroot Interagency Dispatch Ctr (USMTBDC), Dillon Interagency Dispatch Ctr (USMTDDC), Flathead Dispatch (USMTFHA), Great Falls Interagency Dispatch Ctr (USMTGDC), Helena Interagency Dispatch Ctr (USMTHDC), Kalispell Interagency Dispatch Ctr (USMTKIC), Lewistown Interagency Dispatch Ctr (USMTLEC), and Missoula Interagency Dispatch Ctr (USMTMDC).9/7/2022 - Tabular and geospatial changes. Completed change of Dispatch Boundary started 4/4/2022, USMTBZC (Bozeman Interagency Dispatch) was absorbed into USMTBDC (Billings Dispatch Center). This information for use in 2023. Change to the Initial Attack Frequency Zone Boundary will be dependent on FAA and frequency manager input which will be given by 2/28/2023. Information provided by Kathy Pipkin, Northern Rockies Center Manager, and Kat Sorenson, R1 Asst Aircraft Coordinator. Edits by JKuenzi. 07/08/2022 - Tabular change only. DispName corrected from "Columbia Cascades Communication Center" to "Columbia Cascade Communication Center" , per Desraye Assali, R6 Fire and Aviation GIS Coordinator. Edits by JKuenzi, USFS. 04/04/2022 - Tabular changes only. USCAMVIC (Monte Vista Interagency Center) changed to USCASDIC (San Diego Interagency Center). Information provided by James Tomaselli, R5 GACC Center Mgr, and Kara Stringer, Wildland Fire Data Management Business Operations Lead. Edits by JKuenzi. Tabular change only. Following discussion between NRCC (Northern Rockies Geographic Area Coordination Center), USMTBZC in Bozeman, MT, and USMTBDC in Billings, MT, plans to merge Bozeman into Billings anticipated to start 4/18/2022, but will transition throughout 2022 year and be finalized on or near January 2023. The Dispatch Boundary between USMTBZC (Bozeman Interagency Dispatch) and USMTBDC in Billings, MT, will remain in place on the map until January 2023. Tabular change made to show that MTBDC was doing dispatch duty for MTMCC. Information provided by Kathy Pipkin, Northern Rockies Center Manager, and Kat Sorenson, R1 Asst Aircraft Coordinator. Edits by JKuenzi. 03/24/2022 - Geospatial and tabular changes. Update made to 2 small polygons along the Rio Grande near a National Recreation Area and the Amistad Reservoir, which were changed from USNMADC to USTXTIC as a result of 2022 GACC Boundary change per Calvin Miller, Southern Area Coordination Center Deputy Manager, and Kenan Jaycox, Southwest Coordination Center Manager 01/05/2022 - Geospatial and tabular changes. USMTFPAC (Fort Peck Dispatch) was found to have been closed/stopped as of 03/09/2020 per WFMI (Wildland Fire Management Information) application. USMTFPAC polygon was merged into USMTLEC per USMTLEC Center Manager. Edits by JKuenzi, USFS.10/27/2021 - Geospatial and tabular changes. The area of USWASAC is merged into USWANEC per Ted Pierce, Deputy Northwest Geographic Area Coordination Center Manager, and Jill Jones, Interagency Dispatch Center Manager NE Washington Interagency Communications Center. Edits by JKuenzi, USFS.10/15/2021 - Geospatial and tabular changes. Boundary alignments for the Duck Valley Reservation in southern Idaho along the Nevada border. Changes impacting USIDBDC and USNVEIC. The Duck Valley Reservation remains under the Dispatch authority of USNVEIC. The only change was to the alignment of the physical boundary surrounding the Reservation in accordance with the boundary shown on the 7.5 minute quadrangle maps and data supplied by CClay/JLeguineche/Gina Dingman-USFS Great Basin Coordination Center (GBCC) Manager. Edits by JKuenzi, USFS.9/30/2021 - Geospatial and tabular changes. Boundary alignments for Idaho on Hwy 95 NE of Weiser between Boise Dispatch Center and Payette Interagency Dispatch Center - per CClay/JLeguineche/Gina Dingman-USFS Great Basin Coordination Center (GBCC) Manager. Edits by JKuenzi, USFS. Boundary changes at: Weiser (T11N R5W Sec 32), (T11N, R5W, Sec 3), (T12N R5W, Sec 25), and Midvale.9/21/2021 - Geospatial and tabular changes in accordance with proposed GACC boundary re-alignments between Southwestern and Southern GACCs where a portion of Texas, formerly under Southwestern GACC direction was moved to the Southern GACC. Changes to Dispatch Boundary include the following: Lake Meredith National Recreation Area changed from TXLAP to NMABC.Buffalo Lake NWR changed from TXBFR to NMABC.Amarillo BLM changed from TXAMD to NMABC.Muleshoe NWR changed from TXMLR to NMABC.Optima NWR changed from TXOPR to NMABC.Big Bend National Park changed from TXBBP to NMADC.Chamizal National Memorial changed from TXCHP to NMADC.Fort Davis Historic Site changed from TXFDP to NMADC.Amistad National Recreation Area changed from TXAMP to NMADC.All changes proposed for implementation starting 1/10/2022. Edits by JKuenzi, USFS. See also data sets for Geographic Area Coordination Centers (GACC), and Initial Attack Frequency Zones Federal for related changes.3/30/2021 - Geospatial and tabular changes. Boundary changes for Washington, Columbia Cascades Communication Center per Ted Pierce, acting NW GACC Deputy Center Mgr, and Justin Ashton-Sharpe, Fire Planner on the Gifford Pinchot and Mt Hood National Forests. North edge of USWACCC modified to include Mt Ranier National Park. West edge modified slightly to include more of Washington (Burke Island, Bachelor Island, Martin Island, Mt Pleasant, Green Mtn, and the eastern three quarters of Silver Lake. No changes made to Oregon side of USWACCC. Edits by JKuenzi, USFS. 2/19/2021 - Geospatial and tabular changes. Boundary changes for Alaska. Fairbanks Area Forestry Dispatch, Delta Area Forestry Dispatch, and Tok Area Forestry Dispatch merged into Northern Forestry Dispatch Center (USAKNFDC) per Jennifer L Jenkins - BLM GIS Specialist, and Ray Crowe - BLM Alaska Interagency Coordination Center (AICC) Center Manager, Dan Labarre - DNR, and Gabriella Branson - DNR. Edits by JKuenzi, USFS. 2/18/2021 - Geospatial and tabular changes. Boundary changes for Idaho originally submitted in 2016 but never completed in entirety. Changes between Boise Dispatch Center and Payette Interagency Dispatch Center - per
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TwitterThe 2024 cartographic boundary shapefiles are simplified representations of selected geographic areas from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). These boundary files are specifically designed for small-scale thematic mapping. When possible, generalization is performed with the intent to maintain the hierarchical relationships among geographies and to maintain the alignment of geographies within a file set for a given year. Geographic areas may not align with the same areas from another year. Some geographies are available as nation-based files while others are available only as state-based files. The records in this file allow users to map the parts of the 119th Congressional Districts that overlap a particular county. Congressional districts are the 435 areas from which people are elected to the U.S. House of Representatives. After the apportionment of congressional seats among the states based on census population counts, each state is responsible for establishing congressional districts for the purpose of electing representatives. Each congressional district is to be as equal in population to all other congressional districts in a state as practicable. The 119th Congress is seated from January 2025 through December 2026. In Connecticut, Illinois, and New Hampshire, the Redistricting Data Program (RDP) participant did not define the CDs to cover all of the state or state equivalent area. In these areas with no CDs defined, the code "ZZ" has been assigned, which is treated as a single CD for purposes of data presentation. The cartographic boundary files for the District of Columbia, Puerto Rico, and the Island Areas (American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands) each contain a single record for the non-voting delegate district in these areas. The generalzied boundaries of all other congressional districts are based on information provided to the Census Bureau by the states by May 31, 2024. The primary legal divisions of most states are termed counties. In Louisiana, these divisions are known as parishes. In Alaska, which has no counties, the equivalent entities are the organized boroughs, city and boroughs, municipalities, and for the unorganized area, census areas. The latter are delineated cooperatively for statistical purposes by the State of Alaska and the Census Bureau. In four states (Maryland, Missouri, Nevada, and Virginia), there are one or more incorporated places that are independent of any county organization and thus constitute primary divisions of their states. These incorporated places are known as independent cities and are treated as equivalent entities for purposes of data presentation. The District of Columbia and Guam have no primary divisions, and each area is considered an equivalent entity for purposes of data presentation. The Census Bureau treats the following entities as equivalents of counties for purposes of data presentation: Municipios in Puerto Rico, Districts and Islands in American Samoa, Municipalities in the Commonwealth of the Northern Mariana Islands, and Islands in the U.S. Virgin Islands. The entire area of the United States, Puerto Rico, and the Island Areas is covered by counties or equivalent entities. The generalized boundaries for counties and equivalent entities are based on those as of January 1, 2024, primarily as reported through the Census Bureau's Boundary and Annexation Survey (BAS).
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TwitterMilitary Map of Northern Virgnia 1865