Nielsen DMA, or Designated Market Area, is a term used by Nielsen Media Research to refer to geographic areas in the United States that are used for television ratings. Each DMA is defined by Nielsen as a group of counties with similar media markets, and are used to measure the size and composition of the television audience in that area. Nielsen DMAs are used by television broadcasters and advertisers to determine which markets to target with their ads, and are typically defined by the most significant city or cities in the area. There are 210 Nielsen DMAs in the United States, covering all 50 states and the District of Columbia.
« Back to Glossary IndexNielsen DMA
« Back to Glossary Index
