Warren County, Missouri

Warren County profile, demographic data, and geographic information.

Local Government & Public Administration

Authoritative general-purpose local government units serving this area U.S. Census Bureau GUS (2026) / GMAF

Government Unit	Unit Type	Jurisdiction Role	Contact / Address
COUNTY OF WARREN GUS Population: 38,478 (2024) ID: 168774	County	Official County Government	Contact: DEPUTY COUNTY CLERK 101 MOCKINGBIRD LN, STE 302, WARRENTON MO 63383
CITY OF WARRENTON GUS Population: 9,420 (2024) ID: 169210	Municipal	Municipal Government Within County	Contact: MAYOR 200 W BOONESLICK RD, WARRENTON MO 63383-1930
CITY OF WRIGHT CITY GUS Population: 5,723 (2024) ID: 194626	Municipal	Municipal Government Within County	Contact: TREASURER PO BOX 436, WRIGHT CITY MO 63390-0436
CITY OF MARTHASVILLE GUS Population: 1,302 (2024) ID: 129623	Municipal	Municipal Government Within County	Contact: CITY CLERK 402 E MAIN ST, MARTHASVILLE MO 63357-1721
CITY OF TRUESDALE GUS Population: 929 (2024) ID: 169209	Municipal	Municipal Government Within County	Contact: CITY CLERK 109 PINCKNEY ST, TRUESDALE MO 63380-2322
VILLAGE OF INNSBROOK GUS Population: 659 (2024) ID: 107738	Municipal	Municipal Government Within County	Contact: ADMINISTRATOR 1835 HIGHWAY F, INNSBROOK MO 63390-5203
VILLAGE OF PENDLETON GUS Population: 36 (2024) ID: 213331	Municipal	Municipal Government Within County	Contact: CHAIRMAN 28356 PENDLETON SCHOOL RD, WARRENTON MO 63383-3304
VILLAGE OF THREE CREEKS GUS Population: 8 (2024) ID: 222217	Municipal	Municipal Government Within County	Contact: CHAIRMAN 12299 S STATE HIGHWAY 94, MARTHASVILLE MO 63357-2395