DFW airport is split down the middle between Dallas and Tarrant counties, and the homeless are camping in Dallas County.
Here is the address: 2400 Aviation Dr, DFW Airport, TX 75261. One map I saw had the border that showed the border going right through Terminals A, C and E. The public areas would be in Tarrant, and the Secure areas would be in Dallas County. I do not trust that map. I bet my old MAPSCO maps would have the exact position. I am on the road and will check that out when I get home, and report back to you. After March 1. Heading for Florida and some Spring Training!