Lyon County, Iowa

Lyon 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 LYON GUS Population: 12,378 (2024) ID: 164261	County	Official County Government	Contact: LYON COUNTY DEPUTY AUDITOR 206 S 2ND AVE, ROCK RAPIDS IA 51246-1507
CITY OF ROCK RAPIDS GUS Population: 2,709 (2024) ID: 208037	Municipal	Municipal Government Within County	Contact: DEPUTY CLERK 310 S 3RD AVE, ROCK RAPIDS IA 51246-1631
CITY OF GEORGE GUS Population: 1,106 (2024) ID: 204478	Municipal	Municipal Government Within County	Contact: CITY CLERK PO BOX 686, GEORGE IA 51237-0686
CITY OF INWOOD GUS Population: 962 (2024) ID: 164485	Municipal	Municipal Government Within County	Contact: CITY CLERK PO BOX 298, INWOOD IA 51240-0298
CITY OF LARCHWOOD GUS Population: 954 (2024) ID: 164486	Municipal	Municipal Government Within County	Contact: CITY CLERK PO BOX 216, LARCHWOOD IA 51241-0216
CITY OF DOON GUS Population: 640 (2024) ID: 185399	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 37, DOON IA 51235-0037
CITY OF LITTLE ROCK GUS Population: 447 (2024) ID: 164487	Municipal	Municipal Government Within County	Contact: MAYOR 137 MAIN ST, LITTLE ROCK IA 51243-1021
CITY OF LESTER GUS Population: 309 (2024) ID: 104432	Municipal	Municipal Government Within County	Contact: CITY CLERK PO BOX 35, LESTER IA 51242-0035
CITY OF ALVORD GUS Population: 216 (2024) ID: 126661	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 115, ALVORD IA 51230-0115