World Library  
Flag as Inappropriate
Email this Article

ZIP Code Tabulation Area

Article Id: WHEBN0003565324
Reproduction Date:

Title: ZIP Code Tabulation Area  
Author: World Heritage Encyclopedia
Language: English
Subject: ZIP code, Deepwater, New Jersey, Ramona, California, Appling, Georgia, Gilbert, Pennsylvania
Collection: United States Census Bureau Geography, Zip Code
Publisher: World Heritage Encyclopedia
Publication
Date:
 

ZIP Code Tabulation Area

ZIP Code Tabulation Areas (ZCTAs) are statistical entities developed by the United States Census Bureau for tabulating summary statistics. These were introduced with the Census 2000 and continued with the 2010 Census. This new entity was developed to overcome the difficulties in precisely defining the land area covered by each ZIP code. Defining the extent of an area is necessary in order to tabulate census data for that area.

ZCTAs are generalized area representations of the United States Postal Service (USPS) ZIP code service areas, but are not the same as ZIP codes. Individual USPS ZIP codes can cross state, place, county, census tract, census block group and census block boundaries, so the Census Bureau asserts that "there is no correlation between ZIP codes and Census Bureau geography."[1] Moreover, the USPS frequently realigns, merges, or splits ZIP codes to meet changing needs. These changes are usually not reflected in the annual TIGER releases. Each ZCTA is constructed by aggregating the Census 2010 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 compiled. As a result, some addresses end up with a ZCTA code that is different from their ZIP code. ZCTAs are not developed for ZIP codes that comprise only a small number of addresses.[2] Several ZCTAs represent ZIPs that no longer exist due to realignment by the USPS.

There are approximately 42,000 ZIP Codes and 32,000 ZCTAs. The reason that there is not one ZCTA for every ZIP Code is that PO Boxes are excluded in ZCTAs, since only populated areas are included in the Census data.[3]

See also

References

  1. ^ ZIP Code Information, U.S. Census Bureau
  2. ^ United States Census Bureau ZIP Code Tabulation Areas (ZCTAs)
  3. ^ "U.S. Census Bureau data provided by GreatData.com". Retrieved 5 February 2013. 

External links

  • United States Census Bureau ZIP Code Tabulation Areas (ZCTAs)
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.