The 2022 cartographic boundary KMLs 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. County subdivisions are the primary divisions of counties and their equivalent entities for the reporting of Census Bureau data. They include legally-recognized minor civil divisions (MCDs) and statistical census county divisions (CCDs), and unorganized territories. In MCD states where no MCD exists or no MCD is defined, the Census Bureau creates statistical unorganized territories to complete coverage. The entire area of the United States, Puerto Rico, and the Island Areas are covered by county subdivisions. The generalized boundaries of legal MCDs are based on those as of January 1, 2022, as reported through the Census Bureau's Boundary and Annexation Survey (BAS). The generalized boundaries of all CCDs, delineated in 21 states, are based on those as reported as part of the Census Bureau's Participant Statistical Areas Program (PSAP) for the 2020 Census.

The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. County subdivisions are the primary divisions of counties and their equivalent entities for the reporting of Census Bureau data. They include legally-recognized minor civil divisions (MCDs) and statistical census county divisions (CCDs), and unorganized territories. For the 2010 Census, the MCDs are the primary governmental and/or administrative divisions of counties in 29 States and Puerto Rico; Tennessee changed from having CCDs for Census 2000 to having MCDs for the 2010 Census. In MCD States where no MCD exists or is not defined, the Census Bureau creates statistical unorganized territories to complete coverage. The entire area of the United States, Puerto Rico, and the Island Areas are covered by county subdivisions. The boundaries of most legal MCDs are as of January 1, 2021, as reported through the Census Bureau's Boundary and Annexation Survey (BAS). The boundaries of all CCDs, delineated in 21 states, are those as reported as part of the Census Bureau's Participant Statistical Areas Program (PSAP) for the 2020 Census.

Download In State Plane Projection Here. This is our working version of the Lake County boundary. Although technically the county's eastern border extends eastward into Lake Michigan to the state line where Illinois meets Michigan, we routinely use the Lake Michigan shoreline as our eastern boundary for mapping purposes. The north, west and south boundaries are based on a compilation of survey data which aligns well, but not perfectly, with the border as mapped by neighboring counties and the State of Wisconsin, which forms the northern boundary of the county. Update Frequency: This dataset is updated on a weekly basis.

State of Michigan County Boundaries

County boundaries from the Michigan Geographic Framework (MGF) base map.

The 2023 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. Block Groups (BGs) are clusters of blocks within the same census tract. Each census tract contains at least one BG, and BGs are uniquely numbered within census tracts. BGs have a valid code range of 0 through 9. BGs have the same first digit of their 4-digit census block number from the same decennial census. For example, tabulation blocks numbered 3001, 3002, 3003,.., 3999 within census tract 1210.02 are also within BG 3 within that census tract. BGs coded 0 are intended to only include water area, no land area, and they are generally in territorial seas, coastal water, and Great Lakes water areas. Block groups generally contain between 600 and 3,000 people. A BG usually covers a contiguous area but never crosses county or census tract boundaries. They may, however, cross the boundaries of other geographic entities like county subdivisions, places, urban areas, voting districts, congressional districts, and American Indian / Alaska Native / Native Hawaiian areas. The generalized BG boundaries in this release are based on those that were delineated as part of the Census Bureau's Participant Statistical Areas Program (PSAP) for the 2020 Census.

Michigan State Senate Districts from the Michigan Geographic Framework (MGF) base map (v17). District boundaries have been clipped by the extent of Wayne County by the Wayne County Department of Information Technology.

BY USING THIS WEBSITE OR THE CONTENT THEREIN, YOU AGREE TO THE TERMS OF USE. A spatial representation of school district boundaries. This polygon feature class was initially derived from the 1998 Parcel polygon feature class, based on a common school district code as maintained in the Oakland County Land Records database. The key attribute is Name (the school district name).

The 2019 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 Urban Areas that overlap a particular county. After each decennial census, the Census Bureau delineates urban areas that represent densely developed territory, encompassing residential, commercial, and other nonresidential urban land uses. In general, this territory consists of areas of high population density and urban land use resulting in a representation of the ""urban footprint."" There are two types of urban areas: urbanized areas (UAs) that contain 50,000 or more people and urban clusters (UCs) that contain at least 2,500 people, but fewer than 50,000 people (except in the U.S. Virgin Islands and Guam which each contain urban clusters with populations greater than 50,000). Each urban area is identified by a 5-character numeric census code that may contain leading zeroes. 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 as of January 1, 2010.

BY USING THIS WEBSITE OR THE CONTENT THEREIN, YOU AGREE TO THE TERMS OF USE.
The primary function for these features is to display for 911 the public service answering points (PSAPs). Polygon features represent the the real world PSAPs. The PSAP's boundaries are a representation of the Municipal boundaries created for CLEMIS agencies. The key attributes are the CVT (City, Village, or Township) the PSAP falls in and the PSAP receiving the 911 call.

Political county boundaries which extent out into the Great Lakes. Can be used to clip data so that shoreline features are not altered. Also identifies where the political boundaries are for counties that contain Great Lakes shoreline.

The Chicago Wilderness (CW) boundary as updated in 2021 to follow watershed boundaries. The CW boundary includes Southeast Wisconsin, Northeast Illinois, Northwest Indiana, and Berrien county in Michigan

US Congressional Districts from the Michigan Geographic Framework (MGF) base map (v17). Congressional districts have been clipped by the extent of Wayne County by the Wayne County Department of Information Technology.

BY USING THIS WEBSITE OR THE CONTENT THEREIN, YOU AGREE TO THE TERMS OF USE. Water Area is a spatial representation of polygonal hydrography features (Stream/River over 8 feet wide, Lake/Pond, Canal/Ditch, Swamp/Marsh). This polygon feature class was originally derived from a line coverage that was stereo-compiled as part of the Oakland County Spring 2000 digital orthophotography project. Key attributes include the ReachCode and the GNISID as defined in the the National Hydrography Dataset (NHD). Previously called Waterbody. Note: Null Field values mean the Data is not Available or Not Researched.

The 2019 cartographic boundary KMLs 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 Urban Areas that overlap a particular county. After each decennial census, the Census Bureau delineates urban areas that represent densely developed territory, encompassing residential, commercial, and other nonresidential urban land uses. In general, this territory consists of areas of high population density and urban land use resulting in a representation of the ""urban footprint."" There are two types of urban areas: urbanized areas (UAs) that contain 50,000 or more people and urban clusters (UCs) that contain at least 2,500 people, but fewer than 50,000 people (except in the U.S. Virgin Islands and Guam which each contain urban clusters with populations greater than 50,000). Each urban area is identified by a 5-character numeric census code that may contain leading zeroes. 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 as of January 1, 2010.

You can view Michigan Department of Environment, Great Lakes, and Energy (EGLE) district boundary polygons, Michigan county polygons color coated by EGLE district, and EGLE office locations.Viewing District Office Locations: The list of offices displays all offices within the map extent. It will change depending on your zoom level on the map, so zoom in and out to view more or less offices. Click on an office image from the list to view its location on the map.Viewing Pop-Ups: Use the map to click on a county, district, or office point to view its pop-up. Depending on where you click, you may be able to view multiple pop-ups. Cycle through these pop-ups by clicking the arrows next to "1 of X" in the bottom right of the pop-up.Download Data: Visit our Open Data page to download this data.EGLE makes every attempt to ensure data accuracy but cannot guarantee the completeness or accuracy of the information contained in these datasets. For questions regarding content within this application, please email EGLE's Facilities and Operations Manager, Mary Kay Hawes, at HawesM@Michigan.gov. Submit feedback on this application or report problems or data functionality suggestions to EGLE-Maps@Michigan.gov.

A 1920 official road map of the state trunk line system of Michigan showing the numbered and marked state trunk line system and county road system in the lower peninsula. General Disclaimer: This map was scanned as a 600 dpi TIFF and georeferenced manually using ArcGIS Pro desktop software. Georeferencing was done using 18 GCPs and the 2nd order polynomial transformation.Historic maps are of varying accuracy and meant to be used for general historical comparison only. They may not be perfectly geographically accurate but are a perspective of the map authors about the subject contained within. Georeferencing accuracy reflects these considerations.Citation:Poole Brothers and Michigan State Highway Department. “1920 Official Road Map of the State Trunk Line System of Michigan : Showing the Numbered and Marked State Trunk Line System and the County Road Systems / Compiled, Published and Copyrighted, 1920, by Frank F. Rogers, State Highway Commissioner, Lansing, Mich., in Accordance with the Provisions of Act 410, Public Acts of 1919.” 1:875,000. Lansing, MI: Frank F. Rogers, 1920. https://catalog.lib.msu.edu/Record/folio.in00006763085.

A 1920 official road map of the state trunk line system of Michigan showing the numbered and marked state trunk line system and county road system in the lower peninsula. General Disclaimer: This map was scanned as a 600 dpi TIFF and georeferenced manually using ArcGIS Pro desktop software. Georeferencing was done using 16 GCPs and the 2nd order polynomial transformation. Historic maps are of varying accuracy and meant to be used for general historical comparison only. They may not be perfectly geographically accurate but are a perspective of the map authors about the subject contained within. Georeferencing accuracy reflects these considerations.Citation:Poole Brothers and Michigan State Highway Department. “1920 Official Road Map of the State Trunk Line System of Michigan : Showing the Numbered and Marked State Trunk Line System and the County Road Systems / Compiled, Published and Copyrighted, 1920, by Frank F. Rogers, State Highway Commissioner, Lansing, Mich., in Accordance with the Provisions of Act 410, Public Acts of 1919.” 1:875,000. Lansing, MI: Frank F. Rogers, 1920. https://catalog.lib.msu.edu/Record/folio.in00006763085.