Canyon County, Idaho

Canyon 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 CANYON GUS Population: 266,892 (2024) ID: 207745	County	Official County Government	Contact: COMMISSIONER 1115 ALBANY ST, CALDWELL ID 83605-3522
CITY OF NAMPA GUS Population: 117,350 (2024) ID: 162062	Municipal	Municipal Government Within County	Contact: COMMUNITY DEVELOPMENT PROGRAM MANAGE 411 3RD ST S, NAMPA ID 83651-3721
CITY OF CALDWELL GUS Population: 73,088 (2024) ID: 162060	Municipal	Municipal Government Within County	Contact: CALDWELL CITY CLERK PO BOX 1179, CALDWELL ID 83606
CITY OF MIDDLETON GUS Population: 11,730 (2024) ID: 162061	Municipal	Municipal Government Within County	Contact: CITY CLERK PO BOX 487, MIDDLETON ID 83644-0487
CITY OF PARMA GUS Population: 2,198 (2024) ID: 124652	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 608, PARMA ID 83660-0608
CITY OF WILDER GUS Population: 1,725 (2024) ID: 193177	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 687, WILDER ID 83676-0687
CITY OF GREENLEAF GUS Population: 792 (2024) ID: 162063	Municipal	Municipal Government Within County	Contact: CITY TREASURER 20523 WHITTIER DR, GREENLEAF ID 83626-9199
CITY OF MELBA GUS Population: 625 (2024) ID: 211672	Municipal	Municipal Government Within County	Contact: CITY CLERK-TREASURER PO BOX 209, MELBA ID 83641-0209
CITY OF NOTUS GUS Population: 606 (2024) ID: 201590	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 257, NOTUS ID 83656-0257