Census ACS 2023 · 25 cities
Youngest Cities in Idaho
Age demographics shape everything from school enrollment to housing demand. Rexburg city is the youngest city in Idaho with a median age of 21.0. College towns, military communities, and fast-growing suburbs tend to have the youngest populations. Younger cities often have more families with children, growing school systems, and expanding housing markets. Compare median ages across all 25 major cities in Idaho.
Source: Census ACS 2023 5-Year Estimates
| # | City | Median Age | Population | Median Income |
|---|---|---|---|---|
| 1 | Twin Falls city | 34.1 | 53,219 | $60,760 |
| 2 | Star city | 40.6 | 13,231 | $91,318 |
| 3 | Rexburg city | 21 | 39,589 | $50,359 |
| 4 | Rathdrum city | 35.8 | 10,133 | $86,431 |
| 5 | Post Falls city | 34.6 | 41,716 | $73,313 |
| 6 | Pocatello city | 32.9 | 57,152 | $57,931 |
| 7 | Nampa city | 34.1 | 106,289 | $72,122 |
| 8 | Mountain Home city | 31.4 | 16,265 | $58,486 |
| 9 | Moscow city | 25.3 | 25,868 | $56,497 |
| 10 | Middleton city | 34.3 | 10,101 | $83,681 |
| 11 | Meridian city | 37.4 | 124,865 | $98,686 |
| 12 | Lewiston city | 39.7 | 34,471 | $71,047 |
| 13 | Kuna city | 31.9 | 25,960 | $93,545 |
| 14 | Jerome city | 31 | 12,689 | $65,343 |
| 15 | Idaho Falls city | 33.5 | 66,672 | $69,630 |
| 16 | Hayden city | 43.1 | 16,021 | $77,534 |
| 17 | Garden City city | 44 | 12,483 | $66,859 |
| 18 | Eagle city | 46.1 | 31,490 | $118,037 |
| 19 | Coeur d'Alene city | 40.1 | 55,558 | $70,845 |
| 20 | Chubbuck city | 35.7 | 15,900 | $78,646 |
| 21 | Caldwell city | 30.8 | 63,465 | $66,663 |
| 22 | Burley city | 29.2 | 11,721 | $63,315 |
| 23 | Boise City city | 38.2 | 235,701 | $81,308 |
| 24 | Blackfoot city | 35.6 | 12,628 | $69,091 |
| 25 | Ammon city | 32.5 | 18,496 | $84,154 |
More Rankings for Idaho
Frequently Asked Questions
Rexburg city is the #1 ranked city in Idaho by median age, with a value of 21.0 according to Census ACS 2023 data.
Idaho has 25 cities with 10,000+ population tracked in Census ACS 2023 data.
All data comes from the American Community Survey (ACS) 2023 5-Year estimates by the US Census Bureau.
Data from the American Community Survey 2023 5-Year estimates. Covers cities with populations of 10,000 or more in Idaho.