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DMA® Regions

DMA (Designated Market Area) regions are the geographic areas in the U.S. in which local television viewing is measured by Nielsen. DMA data is essential for any marketer, researcher or organization seeking to use standardized geographic areas within their business.

A DMA region is a group of counties and zip codes that form an exclusive geographic area in which the home market television stations hold a dominance of total hours viewed. There are 210 DMA regions, covering the entire continental U.S., Hawaii, and parts of Alaska. DMA boundaries and data are solely owned and exclusive to Nielsen. Any use and or reproduction of these materials without the express written consent of Nielsen is strictly prohibited.

Key Benefits

  • Target local advertising and direct marketing campaigns across channels and platforms
  • Sell advertising by local television market
  • Select local research samples
  • Segment and analyze internal and third-party data by local television market

DMA Data Reports


The ZIP by DMA database provides ZIP code listings within U.S. counties by DMA region. The ZIP by DMA report is produced annually and consists of three sections:

  • Alphabetical sequence by DMA name
  • Numeric sequence by ZIP Code
  • Universe Estimates by DMA name

Data files for ZIP by DMA are available via Excel® and delivered via email

U.S. Television Household Estimates

  • Provides household population estimates for each DMA region
  • Data includes county-level data, county size designation, and TV penetration
  • Data file is available via PDF format only

DMA market and demographic rank

  • Provides population estimates for 31 demographic and household categories in each DMA region
  • Demographics are ranked by DMA penetration and alphabetically
  • Data file is available via PDF format only

Directory of TV stations

  • Provides a complete list of call letters, city of origin, network, and market affiliates for TV stations in North America by DMA region
  • Spanish-language TV stations are also listed
  • Does not include addresses of TV stations
  • Data file is available via PDF format only

Contact us

For more information on licensing Nielsen DMA data, please fill out the form.