This topographic map is designed to be used as a basemap and a reference map. The map has been compiled by Esri and the ArcGIS user community from a variety of best available sources. The map is intended to support the ArcGIS Online basemap gallery. For more details on the map, please visit the World Hillshade and World Topographic Map.

This map features shaded relief imagery, bathymetry and coastal water features that provide neutral background with political boundaries and placenames for reference purposes. The map is intended to support the ArcGIS Online basemap gallery. For more details on the map, please visit the World Hillshade and Terrain with Labels.

This is the 2020 vintage of the 2020 TIGER/Line county boundary. It includes Anne Arundel County, Baltimore County, Baltimore City, Carroll County, Harford County, Howard County, and Queen Anne's County. Note this boundary is a new vintage of the TIGER file but is otherwise identical the the Census 2010 county boundary.Date: 1/21/2021 Update: Update: Irregular. While Census boundaries are updated every 10 years, the Census Bureau makes annual corrections to the geographies as needed. These updates are usually minor and BMC reviews them every few years.Source: Census TIGER/Line. More information on Census geography can be found at https://www.census.gov/geo/maps-data/data/tiger-line.html.

This is the 2020 vintage of the 2020 TIGER/Line Census Tracts. Census tracts are small, relatively permanent statistical subdivisions of a county or equivalent entity. The primary purpose of census tracts is to provide a stable set of geographic units for the presentation of census data and comparison back to previous decennial censuses. Census tracts generally have a population size between 1,200 and 8,000 people, with an optimum size of 4,000 people. When first delineated, census tracts were designed to be homogeneous with respect to population characteristics, economic status, and living conditions. The spatial size of census tracts varies widely depending on the density of settlement. Date: 1/21/2021 Update: Irregular. While Census boundaries are updated every 10 years, the Census Bureau makes annual corrections to the geographies as needed. These updates are usually minor and BMC reviews them every few years.Source: Census TIGER/Line. More information on Census geography can be found at https://www.census.gov/geo/maps-data/data/tiger-line.html.

This dataset represents real property information within a parcel of land in the City of Baltimore. The data dictionary for this dataset can be accessed by visiting the following link.: Data Dictionary For Real Property Information | Open Baltimore (baltimorecity.gov). Data is updated on a weekly basis. To leave feedback or ask a question about this dataset, please fill out the following form: Real Property Information feedback form.

Color Infrared Digital Orthophoto Quarter Quadrangles (CIR-DOQQs) for Baltimore City and Baltimore County. The originals were produced at one-meter resolution to meet the National Map Accuracy Standard (NMAS) at 1:12,000 scale. The originals were resampled to a four-meter resolution. This metadata descirbes this resampled four-meter resolution files. The originals file-sizes are in the range of 28 megabytes to 50 megabytes. This resampling reduces the file-size to facilitate easier downloads via the World Wide Web. The resampling also has the added advantage of reorienting the pixels to remove the rotational factor that was inherent in the original files. Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The original CIR-DOQQs mapped a 1-meter ground resolution of a DOQQ (a 3.75-minutes of latitude by 3.75-minutes of longitude extent) plus the overedge ranging from about 50 meters to 300 meters. The overedge is included to facilitate tonal matching for mosaicking The normal orientation of data is by lines (rows) and samples (columns). Each line contains a series of pixels ordered from west to east with the order of lines fom north to south. The DOQQs are an 8-bit composite raster with radiometric image brightness values stored as 256 levels, from 0 to 255. This is part of a collection of 221 Baltimore Ecosystem Study metadata records that point to a geodatabase. The geodatabase is available online and is considerably large. Upon request, and under certain arrangements, it can be shipped on media, such as a usb hard drive. The geodatabase is roughly 51.4 Gb in size, consisting of 4,914 files in 160 folders. Although this metadata record and the others like it are not rich with attributes, it is nonetheless made available because the data that it represents could be indeed useful. This is part of a collection of 221 Baltimore Ecosystem Study metadata records that point to a geodatabase. The geodatabase is available online and is considerably large. Upon request, and under certain arrangements, it can be shipped on media, such as a usb hard drive. The geodatabase is roughly 51.4 Gb in size, consisting of 4,914 files in 160 folders. Although this metadata record and the others like it are not rich with attributes, it is nonetheless made available because the data that it represents could be indeed useful.

Baltimore County's Urban Rural Demarcation Line (URDL) has divided the county into "urban" and "rural" areas since established by the Planning Board in 1967. Developed primarily as a growth management tool, it has influenced zoning, land-use, and infrustructure decisions, and was the baseline for the Baltimore County part of Maryland's Priority Funding Area. However, this boundary (digitized at a scale of 1:24,000 where 1" represents 2,000') was became obsolete as the county's GIS data increased in resolution (to 1:2,400 where 1" represents 200'). Until recently, determining a property's status as either urban or rural was of a highly interpretative nature. A new URDL was developed to more accurately match the 1:2,400 data (parcel, street centerline, zoning, etc). This version was reviewed and modified in a series of meetings with several interested county agencies. The new URDL removes much of the old one's ambiguity while keeping its original intent. The new URDL was reviewed, modified, and subsequently approved by the Planning Board on June 19, 2003. Minor revisions were effected 9/2/04, 10/21/04, 9/4/07, 5/21/09, 10/1/09 and 11/15/12. The URDL_poly feature class is one part of the URDL feature dataset.

The Human Geography Map (World Edition) web map provides a detailed vector basemap with a monochromatic style and content adjusted to support Human Geography information. Where possible, the map content has been adjusted so that it observes WCAG contrast criteria.This basemap, included in the ArcGIS Living Atlas of the World, uses 3 vector tile layers:Human Geography Label, a label reference layer including cities and communities, countries, administrative units, and at larger scales street names.Human Geography Detail, a detail reference layer including administrative boundaries, roads and highways, and larger bodies of water. This layer is designed to be used with a high degree of transparency so that the detail does not compete with your information. It is set at approximately 50% in this web map, but can be adjusted.Human Geography Base, a simple basemap consisting of land areas in a very light gray only.The vector tile layers in this web map are built using the same data sources used for other Esri Vector Basemaps. For details on data sources contributed by the GIS community, view the map of Community Maps Basemap Contributors. Esri Vector Basemaps are updated monthly.Learn more about this basemap from the cartographic designer in Introducing a Human Geography Basemap.Use this MapThis map is designed to be used as a basemap for overlaying other layers of information or as a stand-alone reference map. You can add layers to this web map and save as your own map. If you like, you can add this web map to a custom basemap gallery for others in your organization to use in creating web maps. If you would like to add this map as a layer in other maps you are creating, you may use the tile layer item referenced in this map.

Qualified Census Tract geometries within Baltimore City Limits. Based on data from HUD published September 2024.Change Log2022-2-15:- Added FY2022 data- Metadata added- Columns renamed to a standard format- Agency names reformatted with Workday conventions2024-8-27:update the dataset and metadata to reflect the current data and descriptionData Dictionaryfield_namedescriptiondata_typerange_of_possible_valuesexample_valuessearchableCensus Tract 2010 The ID of the US census tract from 2010 Census results. Only Qualified Census tracts are includedTextIDs of QCT's in Baltimore city range from 24510030100 to 24510280500, but not by regular intervals since only tracts designated QCT are listed. The values are not integers, they are numerical IDs.24510070200NogeometryMulti-polygon shapes for each census tractThese are shape polygons, thus don't have a single value or expected rangeNo To leave feedback or ask a question about this dataset, please fill out the following form: Baltimore City Qualified Census Tracts feedback form.

This map is designed to be used as a basemap by marine GIS professionals and as a reference map by anyone interested in ocean data.

The Modern Antique Map (World Edition) web map provides a world basemap symbolized with a unique antique styled map, with a modern flair -- including the benefit of multi-scale mapping. The comprehensive map data includes highways, major roads, minor roads, railways, water features, cities, parks, landmarks, building footprints, and administrative boundaries. This basemap, included in the ArcGIS Living Atlas of the World, uses the Modern Antique vector tile layer and World Hillshade.The vector tile layer in this web map is built using the same data sources used for other Esri Vector Basemaps. For details on data sources contributed by the GIS community, view the map of Community Maps Basemap Contributors. Esri Vector Basemaps are updated monthly.Use this MapThis map is designed to be used as a basemap for overlaying other layers of information or as a stand-alone reference map. You can add layers to this web map and save as your own map. If you like, you can add this web map to a custom basemap gallery for others in your organization to use in creating web maps. If you would like to add this map as a layer in other maps you are creating, you may use the tile layers referenced in this map.

This map is designed to focus attention on your thematic content by providing a neutral background with minimal colors, labels, and features. The map is intended to support the ArcGIS Online basemap gallery. For more details on the map, please visit the Dark Gray Base and Dark Gray Reference.