# Geo Data Sources

## us_cities.csv

US Census Bureau 2023 Gazetteer Places File

- **Source:** https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2023_Gazetteer/2023_Gaz_place_national.zip
- **Records:** 32,329 cities/places
- **Last Updated:** December 2025
- **Format:** CSV with columns: ID, STATE_CODE, STATE_NAME, CITY, COUNTY, LATITUDE, LONGITUDE

## us_zipcodes.csv

US ZIP code centroids with latitude/longitude coordinates.

- **Records:** 33,144 ZIP codes
- **Format:** CSV with columns: zipcode, latitude, longitude