Pleasanton is a city in Linn County, Kansas, United States. The population was 1,387 at the 2000 census. Named for General Alfred Pleasonton, the city was founded in 1869.
Pleasanton is located at 38°10′35″N 94°42′43″W / 38.17639°N 94.71194°W / 38.17639; -94.71194 (38.176326, -94.711997).
According to the United States Census Bureau, the city has a total area of 1.8 square miles (4.6 km²), of which, 1.6 square miles (4.2 km²) of it is land and 0.2 square miles (0.4 km²) of it (8.38%) is water.