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<mods:title>American Community Survey Statistical Tables</mods:title>
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<mods:namePart>United States Census Bureau</mods:namePart>
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<mods:abstract>
- The American Community Survey (ACS) is a demographic data collection effort that is continuously being carried out by the U.S. Census Bureau
- Results of the survey are released every year by the U.S. Census Bureau
- Results are made available at different time scales: 1-year, 3-year, and 5-year estimates
- Instead of sharing personal information about each individual who responds, the U.S. Census Bureau **aggregates** survey responses to broader geographic units, in order to protect individual's privacy
- You can download these statistical tables which are aggregated to different geographic scales, including: states, counties, zip codes, tracts and block groups
- The ACS survey results are maintained in massive databases hosted by the U.S. Census Bureau and other authorized data providers
- To download the data, you will need to first decide which time period, geographic unit, and statistical theme you wish to work with
- Once you know these filters, you can use an extract tool to download the data you want, such as [data.census.gov](https://data.census.gov/cedsci/), or the more user and GIS-friendly [National Historic GIS (NHGIS)](https://www.nhgis.org/)</mods:abstract>
<mods:note>Census data, while dating back to the 1790s, was collected in slightly different ways for every census year. This means that the way census geographies and demographic categories are available is subject to nuance, depending on which year you are looking for. NHGIS.org has this handy documentation that includes data availability tables for any given census year: https://nhgis.org/user-resources/data-availability</mods:note>
<mods:subject authority='lcsh' authorityURI='http://id.loc.gov/authorities/subjects'>
<mods:topic>Demographic surveys</mods:topic>
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<mods:topic>Demographic surveys--United States</mods:topic>
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<mods:subject authority='lcsh' authorityURI='http://id.loc.gov/authorities/subjects'>
<mods:topic>Population statistics</mods:topic>
</mods:subject>
<mods:subject authority='lcsh' authorityURI='http://id.loc.gov/authorities/subjects'>
<mods:topic>Census</mods:topic>
</mods:subject>
<mods:subject authority='lcsh' authorityURI='http://id.loc.gov/authorities/subjects' valueURI='http://id.loc.gov/authorities/subjects/sh85104910'>
<mods:topic>Population</mods:topic>
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<mods:title>GIS Data Sets</mods:title>
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<mods:relatedItem displayLabel='Working with NHGIS and Joins (tutorial)' xlink:href='http://steppingintothemap.com/mappinghistory/wp-content/uploads/2018/03/Working-with-NHGIS-and-Joins.pdf' type='isReferencedBy'/>
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<mods:physicalLocation>Boston Public Library</mods:physicalLocation>
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<mods:accessCondition displayLabel='license' type='use and reproduction'>This work is in the public domain under a Creative Commons No Rights Reserved License (CC0).</mods:accessCondition>
<mods:accessCondition displayLabel='rights' type='use and reproduction'>No known copyright restrictions.</mods:accessCondition>
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<mods:recordCreationDate encoding='w3cdtf'>2025-02-11T17:11:40Z</mods:recordCreationDate>
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