Contiguous Counties Database

Contiguous Counties Data This product contains a current record of each U.S. county and its bordering counties. Counties that share a common boundary are listed in this contiguous counties database product, even when crossing state lines. We’ve also been careful to include contiguous counties separated by rivers, canals, and other waterways. In such cases, bordering counties may edge each side of the waterway but not technically touch. Therefore, we use waterway centerlines when warranted.



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Database Specs & Features

Download Sample Data (CSV)

  • Immediate Download

    Download is available immediately upon purchase and for the duration of the annual subscription.

  • Updated Regularly

    We update our database as changes to counties occur.

  • Free FTP/SFTP (upon request)

    To update your database without human intervention, we can provide an FTP address for you to write a script to access. Just request it after purchase.

  • Data Format - CSV

    Comma-Separated Values (CSV) Text File


  • State

    Official U.S. Postal Service state abbreviation

  • State FIPS

    Federal Information Processing Standard (FIPS) 2‐digit state. FIPS codes are not available for all areas (APO, FPO, some U.S. Territories).

  • County Name

    The common name of the county that has the surrounding counties.

  • County FIPS

    Federal Information Processing Standard (FIPS) 3‐digit county. FIPS codes are not available for all areas (APO, FPO, some U.S. Territories).


  • Surrounding County State

    Official U.S. Postal Service state abbreviation

  • Surrounding County State FIPS

    Federal Information Processing Standard (FIPS) 2‐digit state. FIPS codes are not available for all areas (APO, FPO, some U.S. Territories).

  • Surrounding County Name

    The common name of the contiguous county.

  • Surrounding County FIPS

    Federal Information Processing Standard (FIPS) 3‐digit county. FIPS codes are not available for all areas (APO, FPO, some U.S. Territories).

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