Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Topics
Data & Maps
Surveys & Programs
Resource Library
Geographic Changes
Geographic Changes
Annual population estimates generally reflect geographic entities and their boundaries effective as of January 1 of the reference year of the estimate. Population estimates may also include corrections to the most recent decennial census as processed via the Count Question Resolution Program. Other updates, such as address or boundary corrections and geocoding improvements, are also reflected in the estimates.
The geographic change notes page provides documentation for selected geographic changes to counties, county subdivisions, and places that have been processed by the Census Bureau since the last decennial census. Changes effective as of January 1 and submitted by April 1 of a given year will generally be reflected in that year's vintage of population estimates.
Page Last Revised - October 8, 2021
✕
Is this page helpful?
Yes
No
Yes
No✕
NO THANKS
255 characters maximum
255 characters maximum reached
255 characters maximum reached
✕
Thank you for your feedback.
Comments or suggestions?
Comments or suggestions?
