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  • 2017_county_500

    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.

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2017_division_500

    Divisions are groupings of states within a census geographic region, established by the Census Bureau for the presentation of census data. The current nine divisions (East North Central, East South Central, Middle Atlantic, Mountain, New England, Pacific, South Atlantic, West North Central, and West South Central) are intended to represent relatively homogeneous areas that are subdivisions of the four census geographic regions.

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2017_elsd_500kml

    School Districts are single-purpose administrative units within which local officials provide public educational services for the area's residents. The Census Bureau obtains the boundaries, names, local education agency codes, grade ranges, and school district levels for school districts from state officials for the primary purpose of providing the U.S. Department of Education with estimates of the number of children in poverty within each school district. This information serves as the basis for the Department of Education to determine the annual allocation of Title I funding to states and school districts. The cartographic boundary files include separate files for elementary, secondary and unified school districts. The generalized school district boundaries in this file are based on those in effect for the 2015-2016 school year, i.e., in operation as of January 1, 2016.

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2014500k

    Region for United States, 1:500,000

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2014_kml_csa_20m

    Combined Statistical Areas (CSAs) are defined by the Office of Management and Budget (OMB) and consist of two or more adjacent Core Based Statistical Areas (CBSAs) that have significant employment interchanges.

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2015TigerSldu

    State Legislative Districts (SLDs) are the areas from which members are elected to State legislatures.

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2017_nectadiv

    New England City and Town Area (NECTA) Divisions subdivide a NECTA containing a single core urban area that has a population of at least 2.5 million to form smaller groupings of cities and towns. NECTA Divisions are defined by the Office of Management and Budget (OMB) and consist of a main city or town that represents an employment center, plus adjacent cities and towns associated with the main city or town through commuting ties.

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2014_kml_cd114_5m

    Congressional Districts are the 435 areas from which people are elected to the U.S. House of Representatives.

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2014 Alaska Native Regional Corporation

    Alaska Native Regional Corporations (ANRCs) were created pursuant to the Alaska Native Claims Settlement Act (ANCSA), which is federal legislation (Pub. L. 92-203, 85 Stat. 688 (1971); 43 U.S.C. 1602 et seq. (2000)) enacted in 1971, as a 'Regional Corporation' and organized under the laws of the State of Alaska as "Regional Corporations" to conduct both the for profit and non profit affairs of Alaska Natives within defined regions of Alaska. Twelve ANRCs cover the entire State of Alaska except for the area within the Annette Island Reserve (an American Indian Reservation under the governmental authority of the Metlakatla Indian Community). There is a thirteenth ANRC that represents the eligible Alaska Natives living outside of Alaska that are not members of any of the twelve ANRCs within the State of Alaska. Because it has no defined geographic extent, this thirteenth ANRC does not appear in the TIGER/Line Shapefiles and the Census Bureau does not provide data for it. The Census Bureau offers representatives of the twelve ANRCs the opportunity to review and update the ANRC boundaries. ANRCs are represented by a 5 character FIPS code unique within Alaska and a nationally unique 8 character National Standard (GNIS) code

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2014 Coastline

    Th Coastline Shapefile includes all features within the MTDB Class "Coastline" distinguished where the MAF/TIGER Feature Classification Code (MTFCC) for the feature in MTDB is L4150. The coastline included in this shapefile was delineated by the Census Bureau in the MAF/TIGER database based on water measurement class for display of statistical information only; its depiction and designation for statistical purposes does not constitute a determination of jurisdictional authority or rights of ownership or entitlement and it is not a legal land description. This shapefile should be used for data presentation purposes only. It is not the official source for the coastline feature. The name assigned to each Coastline feature is a short form of the name of the large body of water bordered by this Coastline feature.

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2017_region_5kml

    Regions are four groupings of states (Northeast, South, Midwest, and West) established by the Census Bureau in 1942 for the presentation of census data.

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2016_roads

    The All Roads Shapefile includes all features within the MTDB Super Class "Road/Path Features" distinguished where the MAF/TIGER Feature Classification Code (MTFCC) for the feature in MTDB that begins with "S". This includes all primary, secondary, local neighborhood, and rural roads, city streets, vehicular trails (4wd), ramps, service drives, alleys, parking lot roads, private roads for service vehicles (logging, oil fields, ranches, etc.), bike paths or trails, bridle/horse paths, walkways/pedestrian trails, and stairways.

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2017_cnecta_500kml

    Combined New England City and Town Areas (CNECTA) are defined by the Office of Management and Budget (OMB) and consist of two or more adjacent New England City and Town Areas (NECTA) that have significant employment interchanges. The NECTAs that combine to create a CNECTA retain separate identities within the larger combined statistical area.

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2014_kml_nation_5m

    This file depicts the shape of the United States clipped back to a generalized coastline.

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2014_kml_county_500k

    The primary legal divisions of most states are termed counties.

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2019cb_zcta

    ZIP Code Tabulation Areas (ZCTAs) are approximate area representations of U.S. Postal Service (USPS) ZIP Code service areas that the Census Bureau creates to present statistical data for each decennial census. The Census Bureau delineates ZCTA boundaries for the United States, Puerto Rico, American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands once each decade following the decennial census

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2018_edges

    Edge refers to the linear topological primitives that make up MTDB. The All Lines Shapefile contains linear features such as roads, railroads, and hydrography.

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2014_cd114_5m

    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 114th Congress is seated from January 2015 to 2017. 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 boundaries of all other congressional districts are provided to the Census Bureau through the Redistricting Data Program (RDP).

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2014 Topological Faces-Area Landmark State

    The Topological Faces / Area Landmark Relationship File (FACESAL.dbf) contains a record for each face / area landmark relationship. Face refers to the areal (polygon) topological primitives that make up MTDB. A face is bounded by one or more edges; its boundary includes only the edges that separate it from other faces, not any interior edges contained within the area of the face. The face to which a record in the Topological Faces / Area Landmark Relationship File (FACESAL.dbf) applies can be determined by linking to the Topological Faces Shapefile (FACES.shp) on the permanent topological face identifier (TFID) attribute. The area landmark to which a record in the Topological Faces / Area Landmark Relationship File (FACESAL.dbf) applies can be determined by linking to the Area Landmark Shapefile (AREALM.shp) on the area landmark identifier (AREAID) attribute. A face may be part of multiple area landmarks. An area landmark may consist of multiple faces.

    — Organization: U.S. Census Bureau, Department of Commerce

  • 2015Tigerscsd

    School Districts are single-purpose administrative units within which local officials provide public educational services for the area's residents.

    — Organization: U.S. Census Bureau, Department of Commerce