Decatur County, Iowa

Decatur 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 DECATUR GUS Population: 7,656 (2024) ID: 164245	County	Official County Government	Contact: CHAIRMAN DECATUR COUNTY BOARD OF SUPERVISORS 207 N MAIN ST, LEON IA 50144-1647
CITY OF LAMONI GUS Population: 2,072 (2024) ID: 164367	Municipal	Municipal Government Within County	Contact: MAYOR 190 S CHESTNUT ST, LAMONI IA 50140-1236
CITY OF LEON GUS Population: 1,779 (2024) ID: 208006	Municipal	Municipal Government Within County	Contact: CITY CLERK 104 W 1ST ST, LEON IA 50144-1884
CITY OF GRAND RIVER GUS Population: 192 (2024) ID: 126603	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 475, GRAND RIVER IA 50108-0475
CITY OF DAVIS CITY GUS Population: 178 (2024) ID: 164365	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 109, DAVIS CITY IA 50065-0109
CITY OF VAN WERT GUS Population: 175 (2024) ID: 164368	Municipal	Municipal Government Within County	Contact: MAYOR 101 E 1ST ST, VAN WERT IA 50262-7700
CITY OF DECATUR CITY GUS Population: 174 (2024) ID: 164366	Municipal	Municipal Government Within County	Contact: MAYOR 302 NE 4TH ST, DECATUR IA 50067-7702
CITY OF GARDEN GROVE GUS Population: 173 (2024) ID: 104376	Municipal	Municipal Government Within County	Contact: CITY CLERK PO BOX 120, GARDEN GROVE IA 50103-0120
CITY OF WELDON GUS Population: 134 (2024) ID: 208007	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 8, WELDON IA 50264-0008
CITY OF PLEASANTON GUS Population: 32 (2024) ID: 201756	Municipal	Municipal Government Within County	Contact: CLERK PO BOX 42, DAVIS CITY IA 50065
CITY OF LE ROY GUS Population: 10 (2024) ID: 126604	Municipal	Municipal Government Within County	Contact: MAYOR 680 LR 9TH AVE, WELDON IA 50264-9525