Elmore County, Idaho

Elmore 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 ELMORE GUS Population: 29,729 (2024) ID: 162021	County	Official County Government	Contact: COUNTY CLERK 150 S 4TH E ST, MOUNTAIN HOME ID 83647-3000
CITY OF MOUNTAIN HOME GUS Population: 16,912 (2024) ID: 124657	Municipal	Municipal Government Within County	Contact: CITY TREASURER PO BOX 10, MOUNTAIN HOME ID 83647-0010
CITY OF GLENNS FERRY GUS Population: 1,288 (2024) ID: 207752	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 910, GLENNS FERRY ID 83623-0910