115th Congressional Districts by ZIP

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*This version is up-to-date and reflects final court rulings in districts that faced legal challenges in the most recent election (NC, VA, & FL)

Congressional Districts by ZIP Codes image This product provides a current listing of 115th Congressional Districts by ZIP Code. Sometimes a ZIP Code spans more than one Congressional District so we include an estimated coverage percentage (Exam. A ZIP Code may cover 80% of one Congressional District and 20% of another). The foundation of this product is true commercial grade ZIP Code data. From there we utilize multiple sources – including our own plotting when necessary – to obtain a complete and accurate Congressional District by ZIP Code relationship. Plus, we add some extras such as congressional representatives by name, primary county, primary city, etc.

Note: If you’re familiar with this data, you’ll know that all providers start with a database from the U.S. Postal Service which contains substantial inaccuracies at times. Rest assured, we have processes in place to catch and override these inaccuracies. Please contact us if interested in further info.

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Database Specs & Features

Download Sample Data (CSV)

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  • Quarterly Updates

    A monthly update of this database is not necessary, so we update our database quarterly and recommend that you download quarterly as well.

  • Data Format - CSV

    Comma-Separated Values (CSV) Text File

  • ZIP Code

    Official U.S. Postal Service five digit ZIP Code

  • Congressional District Number

    2-digit Congressional District number. Notes: ‘98’ is used for U.S. territories such as Guam and the U.S. Virgin Islands which have congressional delegates, but not true representatives. Also, if there is only one district for a state (due to low population, such as Alaska), the district ‘99’ will be used.

  • City

    Primary City for this ZIP Code

  • County

    Primary county for this ZIP Code.

  • State

    Official U.S. Postal Service State Abbreviation

  • Sequence Number

    Rank given to ZIPs with more than one district (primary, secondary, etc)

  • Coverage Percentage

    Estimated District coverage percentage (some ZIP Codes span more than one disctrict).

  • Rep. First Name

    Representative's first name may include middle initials.

  • Rep. Last Name

    Representative's last name may include a suffix such as ‘Jr.’.

  • Rep. Nickname

    Representative's nick name, if applicable.

  • Vacancy Flag

    Contains ‘Y’ if the seat is currently vacant, otherwise ‘N’.