Lewis County, Idaho

Lewis 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 LEWIS GUS Population: 3,728 (2024) ID: 162027	County	Official County Government	Contact: CHAIRMAN 510 OAK ST, RM 1, NEZPERCE ID 83543-5065
CITY OF KAMIAH GUS Population: 1,163 (2024) ID: 183866	Municipal	Municipal Government Within County	Contact: CITY CLERK PO BOX 338, KAMIAH ID 83536-0338
CITY OF CRAIGMONT GUS Population: 477 (2024) ID: 102400	Municipal	Municipal Government Within County	Contact: CITY CLERK TREAS PO BOX 250, CRAIGMONT ID 83523-0250
CITY OF NEZPERCE GUS Population: 475 (2024) ID: 193179	Municipal	Municipal Government Within County	Contact: CLERK TREASURER PO BOX 367, NEZPERCE ID 83543-0367
CITY OF WINCHESTER GUS Population: 366 (2024) ID: 124671	Municipal	Municipal Government Within County	Contact: CITY CLERK PO BOX 245, WINCHESTER ID 83555-0245
CITY OF REUBENS GUS Population: 48 (2024) ID: 162098	Municipal	Municipal Government Within County	Contact: CITY CLERK 35222 RUCKMAN RD, REUBENS ID 83548-8505