YEs, acording ot the maps I have been able to find it appears that DMA boundaries are on county or state lines. Whichever is applicable..However, AC Nielsen seperates the DMA's by zip code.
I tried to find a link to a site that gave either a DMA map by zips or DMA zip code list. No luck....
Again, periodically AC Nielsen adjusts DMA boundaries. One of the satcos may have outdated info in their computers...Nothing is perfect..Heck, I have a friend who has lived in a home he had built for two years and D* still does not have the address in their data banks..Weird...I just wanted you to know that you needn't fall inot that trap of thinking there is some sort of conspiracy. MAny times on this board posters have placed soem pretty angry comments on here. Those comments seem to have the same genre. "Someone's screwing me"...
Well, this may answer the question about my problems. I live in a county that is in the Cincinnati DMA but my zip code is in the Dayton DMA. Dish provides me with the Cincinnati SD locals but I get no guide data fot the OTA Cincinnati HD locals. Dish must look at the zip to provide you the guide data for the HD locals but uses the county to determine which locals to provide you. Whatever it is, it is frustrating. I get no guide data and I purchase locals.