Pevely is a city in Jefferson County, Missouri, United States. The 2008 estimated population is 5,808. The population was 3,768 at the 2000 census. Charles S. Rankin founded the city in September 1860; the origin of the name was originally Pevely Springs named after an early inhabitant then later shortened to Pevely.
Pevely is located at 38°17′2″N 90°23′49″W / 38.28389°N 90.39694°W / 38.28389; -90.39694 (38.283894, -90.397022).
According to the United States Census Bureau, the city has a total area of 3.4 square miles (8.9 km²), of which, 3.3 square miles (8.6 km²) of it is land and 0.1 square miles (0.2 km²) of it (2.63%) is water.