Twin Falls County, Idaho

Twin Falls 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 TWIN FALLS GUS Population: 96,509 (2024) ID: 124642	County	Official County Government	Contact: CHAIRMAN PO BOX 126, TWIN FALLS ID 83303-0126
CITY OF TWIN FALLS GUS Population: 55,589 (2024) ID: 207763	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 1907, TWIN FALLS ID 83303-1907
CITY OF KIMBERLY GUS Population: 5,592 (2024) ID: 102408	Municipal	Municipal Government Within County	Contact: CITY ADMINISTRATOR PO BOX Z, KIMBERLY ID 83341-0350
CITY OF BUHL GUS Population: 4,761 (2024) ID: 102407	Municipal	Municipal Government Within County	Contact: CITY CLERK/TREASURER 203 BROADWAY AVE N, STE B, BUHL ID 83316-1600
CITY OF FILER GUS Population: 3,040 (2024) ID: 207762	Municipal	Municipal Government Within County	Contact: CITY CLERK TREASURER PO BOX 140, FILER ID 83328-0140
CITY OF HANSEN GUS Population: 1,118 (2024) ID: 162115	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 170, HANSEN ID 83334-0170
CITY OF HOLLISTER GUS Population: 267 (2024) ID: 124677	Municipal	Municipal Government Within County	Contact: CITY CLERK HOLLISTER 2392 MAIN ST, HOLLISTER ID 83301-0610
CITY OF CASTLEFORD GUS Population: 226 (2024) ID: 189884	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 626, CASTLEFORD ID 83321-0626
CITY OF MURTAUGH GUS Population: 123 (2024) ID: 162116	Municipal	Municipal Government Within County	Contact: CLERK PO BOX 157, MURTAUGH ID 83344-0157