DMA is 648

The acronym DMA can stand for many things. One such is designated market area which is used to label radio and TV stations in a particular region in the US.

Atlanta and nearby suburbs use telephone area codes 404, 770, 678, and 470, in a multi-overlay. Some of the outlying suburbs are in area codes 706 and 762, which form a separate overlay. The Atlanta Designated Market Area also extends slightly into Alabama's area code 256 and North Carolina's area code 828.

A designated media market is an area of coverage for a specific station within television. Just as when your cellular phone only works in certain areas, certain television channels only work in certain areas. This would be the designated media market.

Costco has a market share of over 200 DMA. They have continued to increase their market shares as well as their stock values.