Data Files

Main Data Sources and Updates

USPS Database

Monthly Update

US Census TIGER

Database 2010-2025

Please contact us for your specific needs.

Congressional District Data

Your source of new Congressional district data for the 119th Congress

The most accurate, comprehensive, and up-to-date congressional district data available

Also available with Congressional representatives’ contact and committee assignments

With 100% accuracy and the most frequent update schedule, USgeocoder brings you the best congressional district and representatives data you can trust for the 119th Congress!

How You Can Benefit from USgeocoder Congressional District Data

There are "Congressional District by 5 Digit Zip Code" and "Congressional District by 9 Digit Zip Code" data files in today’s market. Following are the common problems most data files have and how USgeocoder solves them.

Data Type

Problem

USgeocoder Solution

Congressional District by 5 Digit Zip Code

Imprecise, Less Actionable

Many 5 digit zip codes cross congressional district boundaries

Practical and Powerful

With the USgeocoder Congressional District by 5 Digit Zip Code Data and USgeocoder Advanced Data Analysis Service, you discover exactly how your 5 digit zip codes and congressional districts overlap so you will better understand your needs, allocate your resources more efficiently, and deliver your message more effectively.

Congressional District by 9 Digit Zip Code

Late in Updating, Inaccurate & Incomplete

Cobbled together using 3rd party software, have no control of update and accuracy.

Timely, Thorough & More Reliable

Congress has divvied up all 9-digit zip codes and assigned them to congressional districts. Our file conforms 100% to these dictates of Congress. We update as soon as Congress declares new Congressional district assignments.

Every month, new addresses are created and the US Postal Service reassigns zip codes accordingly. USgeocoder responds to those changes with monthly updates for the closest to real time accuracy available in the marketplace. To maintain the highest level of accuracy, we work directly with US Postal Service officials responsible for these assignments.

As redistricting occurs, we update our congressional district data within 30 days when the states publish the new-redrawn districts.

We include the District of Columbia and all US possessions.

USgeocoder also offers Congressional representatives contact information with the district data. Congress people's phone and email contact information for main and district offices, committee assignments and staff contact information are updated on a monthly basis.

USgeocoder congressional district data is provided in csv format. It works seamlessly with any database, computer or operating system. The data may be purchased by district, state, region, or the whole country. Please contact us for flexible options and pricing details.

You can use USgeocoder district data files in many ways:

Use our district data files in your own GIS applications or demographic analysis software

Let us batch process your address file for district matching

Get real-time district and elected official information for your address via USgeocoder API

Display and explore your data with USgeocoder's GIS mapping engine

USgeocoder also provides demographic services and custom GIS application development