US ZIP coordinates and place names adapted from GeoNames postal code data.
Source: https://download.geonames.org/export/zip/US.zip
Retrieved: 2026-10-15
License: Creative Commons Attribution 4.0, https://creativecommons.org/licenses/by/4.0/
https://www.geonames.org/
Adaptation: one city/state/estimated coordinate pair per ZIP, compact JSON.
Data is provided as is; coverage and accuracy are not guaranteed.