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CBSA Codes Database

cbsa codes U.S. government Core-Based Statistical Areas
Defined by the Office of Management and Budget, these are geographic locations neighboring urban areas of at least 10,000 people and/or are socioeconomically tied to the urban center by commuting. Prior to year 2000, these were collectively known as MSA- Metropolitan Statistical Areas and Micropolitan Statistical Areas.

An exclusive feature of GreatData CBSA Data is that the population statistics are calculated annually. Therefore, the CBSA rank is based on a more recent population than typical census data classifications.

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Core-Based Statistical Areas - CBSA

In the year 2000, the Office of Management and Budget updated the way market areas are defined under the acronym CBSA (formerly know by SMSAs, MSAs, CMSAs, etc.). Immediately prior to year 2000, (MSA) codes covered about 80 percent of the country, where as the new CBSA codes cover about 93 percent. If you would like to have both MSAs and CBSAs (a CBSA-MSA combination), call us and we could create a custom ZIP to CBSA MSA product for you. There are two major sub-classes in CBSA Codes:

  • Population from 10,000 up to 50,000 people (a.k.a. Micropolitan Statistical Areas)
  • Population of 50,000 or more people (a.k.a. Metropolitan Statistical Areas)
Due to the amount of data, the files are normalized to minimize the amount of duplicate information. The following files are included:
Zip‐CBSAContains one record for each Zip Code with the corresponding CBSA Code, Division Code, State Abbreviation, City, and County. Note: Rural records will not contain CBSA codes. Also, this file does not include military APO/FPO records, U.S. Virgin Islands and territories in the South Pacific.
CBSA‐ListContains CBSA Code, CBSA Name, CBSA Type (Metro, Micro), Latest Population Estimate, and Rank.
State‐CBSAContains State Abbreviation and CBSA number for each CBSA in a state.
DivisionContains the breakdown of each division within a CBSA. It has the latest population estimate for that division.
CSA‐MasterContains all CSA codes and corresponding CBSA codes.
CSA‐ListContains CSA number, CSA Name, Latest Population Estimate and Rank.
State‐CSAContains state abbreviation and CSA number for each CSA in a state.

Learn more: View the CBSA ZIP Code Product Documentation / Watch our Accuracy Matters video

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We are licensees of USPS database products, but we enhance our data based on decades of experience to provide you with the most accurate ZIP to CBSA product available.

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Database Specs & Features


  • Immediate Download

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

  • Free FTP (upon request)

    To update your database without human intervention, we can provide you will your own FTP site that you can write a script to access. Just request it after purchase.

  • 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


  • CBSA ZIP Code

    Official U.S. Postal Service five digit ZIP Code (ZIP to CBSA)

  • City

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

  • State

    Official U.S. Postal Service State Abbreviation

  • County

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

  • CBSA Code

    Geographic location code as defined by the Office of Management and Budget

  • CBSA Name

    Geographic location name as defined by the Office of Management and Budget

  • CBSA Type

    A CBSA sub-classification:
    Micro - 10,000 to 50,000 population
    Metro - 50,000 + population

  • Rank

    A sequence number for each record indicating the greatest population to the least

  • CBSA Est. Population

    Current U.S. Census population estimates per CBSA Code

  • Division Code

    Code assigned to geographic areas having more than 2.5 million people

  • Division Name

    Name assigned to Division Code

  • Division Est. Population

    Current U.S. Census population estimates per Division Code

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