What is a DMA? Monique Dilonga Updated July 02, 2018 14:40 Follow DMA, or Designated Market Area, is geographic area that represents specific markets as defined by the Nielsen Company. You can find the complete list of DMAs here. Related articles Can I benchmark my performance against other industry segments besides my own? How does People Report track data and create benchmarks? File Specifications and Submission Method Comments 0 comments Article is closed for comments.