RANKING · 2024 ACS · 36 SHOWN OF 36

Youngest by median age, Idaho cities

Idaho cities with the youngest median age (2024 ACS). This list covers the 36 cities in Idaho that qualify, ranked against each other statewide. The median across all 36 is 35.0. Biggest climber in the top 100 since 2020: Rupert, ID, up 9 places to #3.

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SAME RANKING BYCounties States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Rexburg, IDID40,33421.0+3%

02Moscow, IDID26,72125.7+5%

03▲9Rupert, IDID6,46029.5−7%

04▲1Shelley, IDID5,30330.8+14%

05▼1Jerome, IDID13,73130.90%

06▲3Burley, IDID12,40931.2+1%

07▼4Rigby, IDID5,75731.4+10%

08Caldwell, IDID76,62931.5+9%

09▲2Mountain Home, IDID16,77931.70%

10▼3Kuna, IDID31,52531.8+22%

11▼1Kimberly, IDID5,79832.2−4%

12▼6Ammon, IDID20,11932.9+14%

13▲2Pocatello, IDID58,77133.1+15%

14▲4Idaho Falls, IDID71,78533.7+4%

15▼1Nampa, IDID120,38433.9+19%

16Preston, IDID6,17734.2+21%

17Blackfoot, IDID13,36134.7+12%

18▲4Fruitland, IDID7,21334.8+11%

19▲4Post Falls, IDID46,71535.0+12%

20Twin Falls, IDID56,21635.1+4%

21▼8Chubbuck, IDID16,82335.9+23%

22▼3Middleton, IDID12,60036.1+30%

23▲3Emmett, IDID8,90036.3+5%

24▲3Payette, IDID8,81336.5+13%

25▼1Rathdrum, IDID13,22737.1+30%

26▼5Meridian, IDID142,98837.5+25%

27▼2Boise City, IDID238,42938.6+18%

28▲2Lewiston, IDID34,71739.8+5%

29▼1Coeur d'Alene, IDID58,17940.1+15%

30▲1Star, IDID20,87440.3+42%

31▲2Weiser, IDID6,24941.1+14%

32▼3Hailey, IDID10,05341.3+24%

33▼1Sandpoint, IDID10,64541.5+14%

34Hayden, IDID17,36342.1+19%

35▲1Garden City, IDID13,04742.3+19%

36▼1Eagle, IDID34,65847.6+35%

SHOWING 1–36 OF 36

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES