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How often is the Geographic Names Information System (GNIS) Database updated?

Federal, State, local, and non-governmental data partners submit new features and edit existing features continuously in the GNIS database. Changes, possibly consisting of hundreds to thousands of records per month, are validated by the staff and made available at the Web site and in the Web services.

The downloadable files are revised every six to 12 months or as needed. The date of the last update is displayed on the download page. States that are currently under contract for extensive data compilation could have very large updates performed monthly or quarterly (see green States on the status map).

The Geographic Names Information System Web-based data maintenance application allows authorized users to enter and edit feature data directly. Batch files of data also are accepted in most standard formats. Government agencies at all levels are encouraged to join the GNIS data maintenance program. Other organizations and individuals will be considered on a case basis.

Suggested corrections and additions to the data are accepted from any source for review, and upon validation, will be committed to the database. See Data.Gov for additional information concerning GNIS Web services and the data maintenance program or contact GNIS Manager.

Tags: Maps, Education, Geospatial, Data Products, Geographic Names Information System (GNIS)