Diboll (DIE-ball) is a city in Angelina County, Texas, United States. The population was 4,476 at the 2010 census. Diboll is named for J. C. Diboll, a local timber salesman.
Diboll is located at 31°11′10″N 94°47′7″W / 31.18611°N 94.78528°W / 31.18611; -94.78528 (31.186060, -94.785395).
According to the United States Census Bureau, the city has a total area of 4.8 square miles (12.5 km²), of which, 4.8 square miles (12.4 km²) of it is land and 0.04 square miles (0.1 km²) of it (0.42%) is water.