what county is yoakum in
Sponsored Topics. Yoakum is a city in DeWitt and Lavaca Counties in the U.S. state of Texas. The population was 5,731 at the 2000 census. Yoakum is located at 29Â°17â²28â³N 97Â°8â²50â³W / 29.29111Â°N 97.14722Â°W / 29.29111; -97.14722 (29.291052, -97.147315).