Youngest Cities in Idaho
Cities ranked by lowest median age · 50 cities · Updated 2026-04-05
This ranking shows the youngest cities in Idaho based on data from the US Census Bureau's American Community Survey (ACS) 5-Year Estimates. All 50 cities are sorted by lowest median age from lowest to highest. Moore leads the ranking with a value of 17.8 years and a population of 319.
The top three cities are Moore (17.8 years), Rockford (17.9 years), and Minidoka (21.0 years). Data is updated nightly from official Census APIs. Click any city name to view its full demographic profile, or see the national youngest cities ranking to compare across all 50 states. You can also explore all cities in Idaho.
| Rank | City | Value | Population |
|---|---|---|---|
| #1 | Moore | 17.8 years | 319 |
| #2 | Rockford | 17.9 years | 305 |
| #3 | Minidoka | 21.0 years | 132 |
| #4 | Rexburg | 21.0 years | 39,589 |
| #5 | De Smet | 21.5 years | 134 |
| #6 | Mountain Home AFB | 22.4 years | 3,198 |
| #7 | Clifton | 22.9 years | 774 |
| #8 | Moscow | 25.3 years | 25,868 |
| #9 | Franklin | 25.5 years | 880 |
| #10 | Weston | 26.0 years | 586 |
| #11 | Eden | 26.5 years | 366 |
| #12 | Heyburn | 26.6 years | 3,678 |
| #13 | Dietrich | 27.3 years | 357 |
| #14 | Aberdeen | 28.1 years | 2,418 |
| #15 | Iona | 28.1 years | 2,882 |
| #16 | Lincoln | 29.0 years | 3,759 |
| #17 | Mud Lake | 29.1 years | 516 |
| #18 | Burley | 29.2 years | 11,721 |
| #19 | Moreland | 29.3 years | 1,386 |
| #20 | Groveland | 29.4 years | 1,204 |
| #21 | Shelley | 29.4 years | 4,987 |
| #22 | Carey | 29.6 years | 1,197 |
| #23 | Sugar City | 29.7 years | 2,011 |
| #24 | Oldtown | 30.0 years | 572 |
| #25 | Ririe | 30.0 years | 958 |
| #26 | Tetonia | 30.0 years | 368 |
| #27 | Wilder | 30.7 years | 1,690 |
| #28 | Caldwell | 30.8 years | 63,465 |
| #29 | Homedale | 30.9 years | 3,006 |
| #30 | Rigby | 30.9 years | 5,251 |
| #31 | Tyhee | 30.9 years | 1,475 |
| #32 | Jerome | 31.0 years | 12,689 |
| #33 | Melba | 31.0 years | 624 |
| #34 | Lapwai | 31.1 years | 1,041 |
| #35 | Wardner | 31.1 years | 300 |
| #36 | Mountain Home | 31.4 years | 16,265 |
| #37 | Georgetown | 31.5 years | 735 |
| #38 | Murtaugh | 31.5 years | 146 |
| #39 | New Meadows | 31.6 years | 311 |
| #40 | Rupert | 31.7 years | 6,157 |
| #41 | Notus | 31.8 years | 709 |
| #42 | Roberts | 31.8 years | 534 |
| #43 | Hazelton | 31.9 years | 988 |
| #44 | Kuna | 31.9 years | 25,960 |
| #45 | Plummer | 31.9 years | 1,055 |
| #46 | Kimberly | 32.1 years | 4,883 |
| #47 | Riverside | 32.1 years | 1,126 |
| #48 | New Plymouth | 32.4 years | 1,863 |
| #49 | American Falls | 32.5 years | 4,636 |
| #50 | Ammon | 32.5 years | 18,496 |
Frequently Asked Questions
What city has the youngest in Idaho?
Moore ranks #1 for youngest cities in Idaho with a value of 17.8 years and a population of 319.
How many cities are ranked for youngest cities in Idaho?
There are 50 cities ranked for youngest cities in Idaho. Rankings are based on data from the US Census Bureau's American Community Survey.
How does Idaho compare to other states for youngest cities?
You can compare Idaho's city rankings to other states or view the national ranking at our national youngest cities page, which lists the top 100 cities across all 50 states.