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The TIGER files do not contain the census demographic data, but merely the geospatial/map data. GIS can be used to merge census demographics or other data sources with the TIGER files to create maps and conduct analysis. TIGER data is available without cost because U.S. Government publications are required to be released into the public domain.
NHGIS provides free of charge, aggregate census data and GIS-compatible boundary files for the United States between 1790 and 2012. Atlas of Historical County Boundaries Project (AHCBP) The AHCBP documents all boundary changes in states and counties in United States territory, including non-county areas never before compiled or mapped ...
A GIS file format is a standard for encoding geographical information into a computer file, as a specialized type of file format for use in geographic information systems (GIS) and other geospatial applications.
Because the world is much more complex than can be represented in a computer, all geospatial data are incomplete approximations of the world. [9] Thus, most geospatial data models encode some form of strategy for collecting a finite sample of an often infinite domain, and a structure to organize the sample in such a way as to enable interpolation of the nature of the unsampled portion.
These changes are usually not reflected in the annual TIGER releases. Each ZCTA is constructed by aggregating the Census 2020 blocks whose addresses use a given ZIP code. In assembling census statistical units to create ZCTAs, the Census Bureau took the ZIP code used by the majority of addresses in each census unit at the time the data was ...
This template is used as an information box on pages, showing each census year with a population, and a percent gain/loss comparison. Also includes functionality for a custom title/footer for the infobox, easy-to-insert citations for each census year, and population estimates for a single non-census year (with an easy-to-insert citation thing for this as well). Template parameters This ...
The logo of the United States Geological Survey (USGS) The Geographic Names Information System (GNIS) is a database of name and location information about more than two million physical and cultural features throughout the United States and its territories; the associated states of the Marshall Islands, Federated States of Micronesia, and Palau; and Antarctica.
The Census Bureau sponsors the survey under the authority of Title 13 of the United States Code, Section 182. The SIPP was developed from the Income Survey Development Program, conducted between 1977 and 1981, which developed survey data collection strategies and instruments as well as data processing strategies for the SIPP.