Custer County, Idaho
Custer 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 |
|---|---|---|---|
|
GUS Population: 4,597 (2024)
ID: 212961
|
County | Official County Government |
Contact: CLERK
PO BOX 385, CHALLIS ID 83226-0385
|
|
CITY OF CHALLIS
GUS Population: 944 (2024)
ID: 207751
|
Municipal | Municipal Government Within County |
Contact: UTILITY BILLING CLERK
PO BOX 587, CHALLIS ID 83226-0587
|
|
CITY OF MACKAY
GUS Population: 480 (2024)
ID: 189881
|
Municipal | Municipal Government Within County |
Contact: CITY CLERK
PO BOX 509, MACKAY ID 83251-0509
|
|
GUS Population: 122 (2024)
ID: 102390
|
Municipal | Municipal Government Within County |
Contact: CITY CLERK / TREASURER
PO BOX 53, STANLEY ID 83278-0053
|
|
CITY OF CLAYTON
GUS Population: 12 (2024)
ID: 162072
|
Municipal | Municipal Government Within County |
Contact: MAYOR
PO BOX 33, CLAYTON ID 83227-0033
|