TIGER/Line Shapefile, 2018, nation, U.S., Current County and Equivalent National Shapefile

Description

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. 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 boundaries for counties and equivalent entities are as of January 1, 2018, primarily as reported through the Census Bureau's Boundary and Annexation Survey (BAS).

Resources

Name Format Description Link
23 This Rest Service contains the Counties and Equivalent Layer https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/State_County/MapServer
55 Feature Catalog for the 2018 Current County and Equivalent National https://meta.geo.census.gov/data/existing/decennial/GEO/GPMB/TIGERline/TIGER2018///county/tl_2018_county.shp.ea.iso.xml
57 tl_2018_us_county.zip https://www2.census.gov/geo/tiger/TIGER2018/COUNTY/tl_2018_us_county.zip
21 Should be used for most mapping projects--this is our most comprehensive dataset. Designed for use with GIS (geographic information systems). https://www.census.gov/geographies/mapping-files/time-series/geo/tiger-line-file.html
52 This web mapping service contains the layer for the Current County and Equivalent. This URL is to be used in mapping software like ArcMap. To use this in a web browser, see the OGC Web Mapping Specification. https://tigerweb.geo.census.gov/arcgis/services/TIGERweb/tigerWMS_ACS2018/MapServer/WMSServer

Tags

  • municipio
  • united states
  • polygon
  • borough
  • parish
  • nation
  • county
  • u.s.

Topics

  • Climate

Categories

  • Arctic
  • Permafrost and Arctic Landscapes
  • Arctic Peoples and Ecosystems
  • Human Health
  • Arctic Development and Transport