Jefferson County, Iowa

Jefferson 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 JEFFERSON GUS Population: 15,781 (2024) ID: 164256	County	Official County Government	Contact: CHAIRMAN 51 E BRIGGS AVE, FAIRFIELD IA 52556-2820
CITY OF FAIRFIELD GUS Population: 9,511 (2024) ID: 190201	Municipal	Municipal Government Within County	Contact: ADMINISTRATOR PO BOX 850, FAIRFIELD IA 52556-0015
CITY OF BATAVIA GUS Population: 434 (2024) ID: 138225	Municipal	Municipal Government Within County	Contact: CITY CLERK PO BOX 20, BATAVIA IA 52533-0020
CITY OF MAHARISHI VEDIC CITY GUS Population: 290 (2024) ID: 214093	Municipal	Municipal Government Within County	Contact: CITY CLERK 1750 MAHARISHI CENTER AVE, MAHARISHI VEDIC CITY IA 52556-9123
CITY OF LIBERTYVILLE GUS Population: 278 (2024) ID: 164449	Municipal	Municipal Government Within County	Contact: CITY CLERK PO BOX 225, LIBERTYVILLE IA 52567-0225
CITY OF LOCKRIDGE GUS Population: 245 (2024) ID: 138226	Municipal	Municipal Government Within County	Contact: CITY CLERK PO BOX 113, LOCKRIDGE IA 52635-0113
CITY OF PACKWOOD GUS Population: 186 (2024) ID: 104414	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 952, PACKWOOD IA 52580-0952
CITY OF PLEASANT PLAIN GUS Population: 83 (2024) ID: 164450	Municipal	Municipal Government Within County	Contact: MAYOR 505 SOUTH STREET, BRIGHTON IA 52540-8530