Bonneville 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
Idaho Falls168,69965,9051.03%2,58626.6City
Ammon220,19717,8752.96%2,5078.1City
Lincoln33,6363,380-0.03%2,3381.6CDP
Iona43,2252,7453.86%2,5621.3City
Ucon51,2571,1671.78%1,3780.9City
Swan Valley63232426.6%2811.6City
Irwin72932632.45%1122.6City

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 Bonneville County, Idaho?

Idaho Falls is the largest city in Bonneville County.

What is the smallest city in Bonneville County, Idaho?

Irwin is the smallest city in Bonneville County.

How many cities are in Bonneville County?

There are 7 cities in Bonneville County, Idaho.

Frequently Asked Questions