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Home >> State of Idaho >> Bonneville County  

Welcome to Bonneville County ...

Time Zone: Bonneville County lies in the Mountain Time Zone (MST/MDT) and observes daylight saving time.

The community of Idaho Falls is the Seat for Bonneville County.

Bonneville County was founded in 1911 and was created by taking area from Bingham County.

From the Census Estimates for 2019, <1> Bonneville had a population of 119,062 people. This is an increase of 13.74% since the last Census (which gave a population of 104,675 people in 2010).

At the time of the 2010 Census, Bonneville represented 6.68% of the total population of Idaho.

Below are some of the communities located in Bonneville County:

  • Ammon
    (4 miles [6.4 km] to the west)
    • Ammon is located in Bonneville County (ID)
    • Jump to our Gazetteer entry for Ammon
    • Population from the 2020 Census: 17,726 people
    • Jump to TripAdvisor's Tourism page for Ammon <2>
  • Idaho Falls
    (8 miles [12.9 km] to the west)
  • Iona
    (4 miles [6.4 km] to the northwest)
    • Iona is located in Bonneville County (ID)
    • Jump to our Gazetteer entry for Iona
    • Population from the 2020 Census: 2,441 people
    • Jump to TripAdvisor's Tourism page for Iona <2>
  • Irwin
    (29 miles [46.7 km] to the east)
    • Irwin is located in Bonneville County (ID)
    • Jump to our Gazetteer entry for Irwin
    • Population from the 2020 Census: 250 people
    • Jump to TripAdvisor's Tourism page for Irwin <2>
  • Swan Valley
    (28 miles [45.1 km] to the east)
  • Ucon
    (9 miles [14.5 km] to the northwest)
    • Ucon is located in Bonneville County (ID)
    • Jump to our Gazetteer entry for Ucon
    • Population from the 2020 Census: 1,172 people
    • Jump to TripAdvisor's Tourism page for Ucon <2>

Websites of Interest ...

Footnotes ...

<1>On a yearly basis, the US Census Bureau creates an estimate of the county's population. Keep in mind that this is an estimate and not an actual count. The last physical count was the 2010 Census and the next count will be for the 2020 Census.
<2>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.