Canyon County
Sign in to savecounty in Idaho, United States
Key facts
- Country
- United States
- State
- Idaho
- Founded
- March 7, 1891
- Seat
- Caldwell
- Largest city
- Nampa
- Total
- 604 sq mi (1,560 km )
- Land
- 587 sq mi (1,520 km )
- Water
- 16 sq mi (41 km ) 2.7%
- Estimate 2025
- 275,123
- Density
- 394/sq mi (152/km )
- Time zone
- UTC−7 ( Mountain )
- Summer dst
- UTC−6 ( MDT )
- Congressional district
- 1st
- Website
- www .canyoncounty .org
via Wikipedia infobox
Article
Canyon County is located in the U.S. state of Idaho. As of the 2020 Census, the population was 231,105, which by 2025 was estimated to have risen to 275,123, making it the second-most populous county in Idaho. The county seat is Caldwell, and its largest city is Nampa. Canyon County is part of the Boise metropolitan area.
History