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IDIdaho rankings

Youngest towns in Idaho

Ranked by the median age of residents. 63 towns with 2,500+ residents.

U.S. Census ACS 2020–2024 5-year

1 Rexburg 21.0 Population 40,543 2 Mountain Home AFB 22.9 Population 3,219 Map of Moscow 3 Moscow 25.7 Population 26,286
#TownMedian agePopulationMedian income
1 Rexburg40,543 people 21.0 40,543 $50,617
2 Mountain Home AFB3,219 people 22.9 3,219 $74,196
3 Map of Moscow Moscow26,286 people 25.7 26,286 $57,022
4 Iona2,984 people 27.3 2,984 $84,914
5 Aberdeen2,564 people 28.2 2,564 $82,619
6 Lincoln4,002 people 28.9 4,002 $84,280
7 Map of Rupert Rupert6,190 people 29.5 6,190 $54,741
8 Map of Shelley Shelley5,092 people 30.8 5,092 $77,563
9 Map of Jerome Jerome12,930 people 30.9 12,930 $66,894
10 Burley Burley11,958 people 31.2 11,958 $67,468
11 Rigby5,404 people 31.4 5,404 $85,056
12 Map of Caldwell Caldwell66,516 people 31.5 66,516 $73,058
13 Mountain Home Mountain Home16,493 people 31.7 16,493 $63,125
14 Kuna27,158 people 31.8 27,158 $96,219
15 Map of Kimberly Kimberly5,111 people 32.2 5,111 $97,799
16 Map of St. Anthony St. Anthony3,911 people 32.4 3,911 $53,152
17 Map of Gooding Gooding3,778 people 32.6 3,778 $41,899
18 Ammon19,064 people 32.9 19,064 $86,121
19 Map of American Falls American Falls4,712 people 33.0 4,712 $57,783
20 Map of Pocatello Pocatello57,635 people 33.1 57,635 $60,418
21 Map of Idaho Falls Idaho Falls67,725 people 33.7 67,725 $73,110
22 Map of Heyburn Heyburn3,693 people 33.7 3,693 $64,179
23 Map of Filer Filer2,925 people 33.7 2,925 $64,671
24 Nampa110,319 people 33.9 110,319 $74,279
25 Map of Homedale Homedale3,069 people 34.0 3,069 $62,117
26 Preston5,928 people 34.2 5,928 $61,039
27 Map of Buhl Buhl4,673 people 34.2 4,673 $55,568
28 Malad City2,601 people 34.4 2,601 $77,237
29 Map of Blackfoot Blackfoot12,782 people 34.7 12,782 $64,032
30 Map of Fruitland Fruitland6,663 people 34.8 6,663 $65,457
31 Post Falls43,391 people 35.0 43,391 $82,183
32 Twin Falls Twin Falls54,164 people 35.1 54,164 $61,205
33 Map of Fort Hall Fort Hall2,654 people 35.2 2,654 $44,514
34 Map of Chubbuck Chubbuck16,126 people 35.9 16,126 $82,977
35 Map of Middleton Middleton10,649 people 36.1 10,649 $89,013
36 Emmett8,275 people 36.3 8,275 $58,750
37 Payette8,536 people 36.5 8,536 $55,208
38 Map of Victor Victor3,067 people 36.5 3,067 $77,267
39 Map of Rathdrum Rathdrum10,874 people 37.1 10,874 $86,563
40 Soda Springs Soda Springs3,158 people 37.1 3,158 $57,361
41 Meridian130,138 people 37.5 130,138 $100,795
42 Map of Driggs Driggs2,925 people 38.2 2,925 $95,392
43 Boise City237,242 people 38.6 237,242 $83,904
44 Map of McCall McCall3,946 people 38.9 3,946 $60,253
45 Map of Lewiston Lewiston34,651 people 39.8 34,651 $72,197
46 Coeur d'Alene56,447 people 40.1 56,447 $72,338
47 Map of Star Star14,745 people 40.3 14,745 $97,936
48 Map of Bonners Ferry Bonners Ferry2,669 people 40.5 2,669 $52,500
49 Bellevue2,588 people 40.7 2,588 $72,712
50 Weiser5,935 people 41.1 5,935 $45,292
51 St. Maries2,915 people 41.1 2,915 $60,458
52 Hailey9,665 people 41.3 9,665 $90,760
53 Map of Sandpoint Sandpoint9,637 people 41.5 9,637 $72,289
54 Map of Montpelier Montpelier2,694 people 42.0 2,694 $61,375
55 Map of Hayden Hayden16,338 people 42.1 16,338 $82,958
56 Map of Wendell Wendell2,981 people 42.1 2,981 $57,266
57 Garden City Garden City12,654 people 42.3 12,654 $70,124
58 Map of Hidden Springs Hidden Springs3,378 people 43.4 3,378 $163,203
59 Map of Orofino Orofino3,260 people 44.8 3,260 $53,438
60 Map of Grangeville Grangeville3,515 people 46.2 3,515 $61,322
61 Map of Salmon Salmon3,203 people 46.8 3,203 $42,844
62 Eagle32,855 people 47.6 32,855 $122,894
63 Map of Ketchum Ketchum3,594 people 58.3 3,594 $93,046

How this ranking works

We rank every town by the median age of residents. College towns rank high here, because students pull the median down. The town with the lowest figure ranks #1. For comparison, the figure for Idaho as a whole is 37.3.

Only towns with at least 2,500 residents are ranked; Census estimates for smaller places are too uncertain. Population and income: U.S. Census Bureau American Community Survey 5-year estimates. Town photos: Wikimedia Commons, credited on each town’s page.

Same ranking in other states

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