Wentzville, Missouri

Wentzville, Missouri
City of Wentzville
Old Downtown Wentzville
Location of Wentzville
Coordinates: 38°48′58″N 90°51′26″W / 38.81611°N 90.85722°W / 38.81611; -90.85722
CountryUnited States
StateMissouri
CountySt. Charles County
Founded1855
Named afterErasmus Livingston Wentz
Government
 • MayorNick Guccione
Area
 • Total
20.94 sq mi (54.24 km2)
 • Land20.93 sq mi (54.20 km2)
 • Water0.012 sq mi (0.03 km2)
Elevation
620 ft (190 m)
Population
 (2020)
 • Total
44,372
 • Estimate 
(2024)
48,646
 • Density2,120/sq mi (818.6/km2)
Time zoneUTC−6 (Central (CST))
 • Summer (DST)UTC−5 (CDT)
ZIP code
63385
Area code636
FIPS code29-78442
GNIS feature ID0756888
Websitewentzvillemo.org

Wentzville is an exurb of St. Louis that is located in western St. Charles County, Missouri, United States. As of the 2024 U.S. Census Bureau estimates, the city had a total population of 48,646, making it the 15th-largest city in Missouri. Wentzville has been the fastest growing city in Missouri, by percentage population increase from 2000 to 2020.