Idaho Falls, Idaho

Idaho Falls population, 2020 to 2024

Idaho Falls added 3,594 residents from July 2020 to July 2024, a change of +5.5%. In the latest year it moved by +1,451. Among 36 Idaho places of 5,000 or more, that growth ranks 26th; the median place changed by +8.3%. The median place of 5,000+ in Idaho has 16,745 people, so Idaho Falls is 4.2 times that size.

Idaho Falls covers 27.15 square miles of land and 0.56 of water, for 2,561 people per square mile of land. The median Idaho place of 5,000+ has 2,389, so Idaho Falls is close to the typical town.

What county Idaho Falls is in

All of Idaho Falls's residents live in Bonneville County, which had 133,644 residents in 2024. Idaho Falls holds 52.0% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Idaho Falls

3 ZIP Code Tabulation Areas (ZCTAs) overlap Idaho Falls by at least 10% of the ZCTA's or the city's land: 83401, 83402, 83404. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Idaho Falls is

The Census internal point of Idaho Falls is at 43.489600, -112.035300. Boise, the capital, is 209.5 miles W in a straight line. The nearest larger place is Ogden, UT (88,656 people), 156.3 miles away. The nearest city of 100,000 or more is Salt Lake City, UT, 187.5 miles away.

Daylight in Idaho Falls

At 43.49° N, Idaho Falls gets about 15 h 25 min of daylight around the June solstice and 8 h 57 min around the December solstice, a swing of 6 h 29 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Idaho Falls

The eight nearest incorporated places of 1,000+ in Idaho, measured between internal points. The closest is Ammon, 3.9 miles away, with 20,095 people.