Canyon County, Idaho Cities (2024)

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

City
Rank
2024 Pop.
2020 Pop.
Change
Density (/mi²)
Area (mi²)
Type
Nampa1118,587101,3103.78%3,41034.8City
Caldwell270,90160,6413.75%3,01523.5City
Middleton311,5019,5594.4%1,8816.1City
Parma42,1672,0940.84%2,0051.1City
Wilder51,7151,5951.78%2,3530.7City
Greenleaf6783811-0.89%1,0170.8City
Notus7602608-0.33%1,6180.4City
Melba85935730.85%1,2980.5City

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in Canyon County, Idaho?

Nampa is the largest city in Canyon County.

What is the smallest city in Canyon County, Idaho?

Melba is the smallest city in Canyon County.

How many cities are in Canyon County?

There are 8 cities in Canyon County, Idaho.

Frequently Asked Questions