API to Get Congressional Districts

Need to add Congressional districts or Senator and Representative contact information to addresses or latitude/longitude coordinates in bulk? You're in the right place.

This article shows you how to add Congressional districts using Geocodio. The Congressional district data returned includes Congressional district number, Congress number, and Congress years, with the option to append legislator data. You can use our API to integrate it into a website, or upload Excel, CSV, and TSV files.

New: 120th Congress (cd120) Preview Available - Congressional district boundaries for the 120th Congress are now available as a preview via the field append. The data is accurate, though some states may receive updates as final redistricting changes are published. The default field append continues to use the 119th Congress (cd119).

Test it first: Find the Congressional district information for a single address

If you just need the Congressional districts and Senator/Representative contact information for one address, you can use the tool below. Just check the box next to ‘Congressional Districts’, then click ‘show results.’

Find the Congressional district for a single address

Congressional District Number

For example, Congressional District 8

Congress Number

For example, 117th

Congress Years

For example, 2021-2023

Congressional Districts

Senator and Representative Names

Senator and Representative Emails

Senator and Representative DC Office Addresses

Senator and Representative Phone Numbers

Senator and Representative Websites

Senator and Representative Parties

Senator and Representative Social Media Links

Senator and Representative IDs

Address or Coordinates to Senator and Representative Info

What Our Customers Say

In elections, we can’t have even a 5% tolerance for error. Geocodio gives us the accuracy we need to give people the correct information about the election and remind them to vote.

Debra Cleaver, Founder

In elections, we can’t have even a 5% tolerance for error. Geocodio gives us the accuracy we need to give people the correct information about the election and remind them to vote.

Debra Cleaver, Founder

Related Resources

ZIP Codes to Congressional Districts

If you only have ZIP codes, we can return all of the possible Congressional districts ranked by likelihood in our API. (Most likely result is returned for spreadsheets.)

Learn more