RANKING · 1990 CENSUS · 35 SHOWN OF 35

Oldest by median age, Idaho cities · 1990

Idaho cities ranked by median age of residents (1990 ACS). This list covers the 35 cities in Idaho that qualify, ranked against each other statewide. The median across all 35 is 30.7.

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SAME RANKING BYCounties States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS –

01Sandpoint, IDID10,64536.3–

02Weiser, IDID6,24935.4–

03Lewiston, IDID34,71735.2–

04Coeur d'Alene, IDID58,17934.4–

05Emmett, IDID8,90034.2–

06Eagle, IDID34,65834.0–

07Payette, IDID8,81333.1–

08Fruitland, IDID7,21332.9–

09Twin Falls, IDID56,21632.7–

10Jerome, IDID13,73132.5–

11Boise City, IDID238,42932.3–

12Mountain Home, IDID16,77932.1–

13Hayden, IDID17,36332.1–

14Kimberly, IDID5,79831.7–

15Preston, IDID6,17731.7–

16Post Falls, IDID46,71531.4–

17Hailey, IDID10,05331.1–

18Caldwell, IDID76,62930.7–

19Nampa, IDID120,38430.4–

20Blackfoot, IDID13,36130.4–

21Idaho Falls, IDID71,78530.1–

22Rathdrum, IDID13,22729.8–

23Burley, IDID12,40929.8–

24Rupert, IDID6,46029.8–

25Pocatello, IDID58,77129.8–

26Meridian, IDID142,98829.8–

27Garden City, IDID13,04729.0–

28Rigby, IDID5,75729.0–

29Middleton, IDID12,60028.9–

30Kuna, IDID31,52527.1–

31Chubbuck, IDID16,82326.5–

32Shelley, IDID5,30326.1–

33Moscow, IDID26,72124.4–

34Ammon, IDID20,11924.2–

35Rexburg, IDID40,33419.9–

SHOWING 1–35 OF 35

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS