ZIP Code Database

This Enterprise Class ZIP Code database is dramatically superior to the many repackaged U.S. Postal database products on the market today. We use multiple sources to obtain the most accurate robust database possible. It is extremely clean due to a continual manual verification process. Our process for eliminating duplicates is unmatched. Normal postal databases will have thousands of duplicates, different spellings for like names, and numerous incorrect records. You will not find that to be the case with this product.

zip code databaseAnytime a ZIP Code boundary covers more than one city, this file has each city listed as a separate record. That makes around 57,500 legitimate records for the United States. More records simply means more duplicates or errors. This file is very clean and appropriately lean. Its data is standardized to ensure consistent spellings and uniform naming conventions.

Why our ZIP Code Data is Better

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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.

  • Monthly Updates

    A monthly update of this database follows closely with the monthly USPS release.

  • 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.

  • Multi-Cities per ZIP

    If a ZIP Code boundary covers more than one city, each city is listed as a separate record (a sequence number indicates the primary city/town based on greatest population to the least).

    Bonus: Included with the standard download is an extra file containing one record per ZIP Code for those wanting primary city only (thus, fewer records).

  • Data Format - CSV

    Comma-Separated Values (CSV) Text File

  • 5 Digit ZIP Code

    Official U.S. Postal Service five digit US ZIP Code Data

  • ZIP Type (Business, Military, etc.)

    U.S. Postal Service ZIP Code database type codes:
    B = Single High-volume Address
    M = APO/FPO Military
    E = P.O. Box Only
    No value indicates standard general delivery

  • 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

    The name of the county in which the ZIP Code is found.

  • County FIPS

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

  • City

    Official city name used by the U.S. Postal Service

  • City FIPS

    Federal Information Processing Standard (FIPS) 5‐digit place (city/town). FIPS codes are not available for all areas (APO, FPO, some U.S. Territories).

  • City Type Indicator

    U.S. Postal Service city designation: P=Primary City, A=Acceptable City, N=Non‐Acceptable City.

  • City Rank by Population

    A sequence number applied to each city/town within a single ZIP Code indicating the greatest population to the least for that ZIP Code.

  • MSA Codes (Metro Statistical Area)

    Metropolitan Statistical Area (MSA) codes are greater metropolitan areas as defined by the U.S. Office of Management & Budget. These areas usually represent the surrounding county or counties (if within commuting distance) of a city having 50,000 plus inhabitants.

  • Area Codes

    Primary area code for each ZIP Code.

  • Time Zones

    Standardized based on Coordinated Universal Time (UTC). Time zones range from ‐5 (Eastern Standard Time) to ‐10 (Hawaiian Standard Time).

  • Daylight Saving Time Flag

    Indicates if Daylight Savings Time is observed in a given ZIP Code.