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IDIdaho rankings

Oldest towns in Idaho

Ranked by the median age of residents — often lake, mountain and retirement towns. 63 towns with 2,500+ residents.

U.S. Census ACS 2020–2024 5-year

Map of Ketchum 1 Ketchum 58.3 Population 3,594 2 Eagle 47.6 Population 32,855 Map of Salmon 3 Salmon 46.8 Population 3,203
#TownMedian agePopulationHome value
1 Map of Ketchum Ketchum3,594 people 58.3 3,594 $824,000
2 Eagle32,855 people 47.6 32,855 $772,900
3 Map of Salmon Salmon3,203 people 46.8 3,203 $235,500
4 Map of Grangeville Grangeville3,515 people 46.2 3,515 $293,300
5 Map of Orofino Orofino3,260 people 44.8 3,260 $223,400
6 Map of Hidden Springs Hidden Springs3,378 people 43.4 3,378 $773,500
7 Garden City Garden City12,654 people 42.3 12,654 $449,500
8 Map of Hayden Hayden16,338 people 42.1 16,338 $494,500
9 Map of Wendell Wendell2,981 people 42.1 2,981 $242,100
10 Map of Montpelier Montpelier2,694 people 42.0 2,694 $240,300
11 Map of Sandpoint Sandpoint9,637 people 41.5 9,637 $465,600
12 Hailey9,665 people 41.3 9,665 $637,800
13 Weiser5,935 people 41.1 5,935 $223,400
14 St. Maries2,915 people 41.1 2,915 $236,300
15 Bellevue2,588 people 40.7 2,588 $539,000
16 Map of Bonners Ferry Bonners Ferry2,669 people 40.5 2,669 $281,400
17 Map of Star Star14,745 people 40.3 14,745 $564,300
18 Coeur d'Alene56,447 people 40.1 56,447 $483,500
19 Map of Lewiston Lewiston34,651 people 39.8 34,651 $333,700
20 Map of McCall McCall3,946 people 38.9 3,946 $676,500
21 Boise City237,242 people 38.6 237,242 $484,800
22 Map of Driggs Driggs2,925 people 38.2 2,925 $525,100
23 Meridian130,138 people 37.5 130,138 $531,600
24 Map of Rathdrum Rathdrum10,874 people 37.1 10,874 $444,100
25 Soda Springs Soda Springs3,158 people 37.1 3,158 $241,400
26 Payette8,536 people 36.5 8,536 $276,500
27 Map of Victor Victor3,067 people 36.5 3,067 $617,300
28 Emmett8,275 people 36.3 8,275 $342,000
29 Map of Middleton Middleton10,649 people 36.1 10,649 $403,100
30 Map of Chubbuck Chubbuck16,126 people 35.9 16,126 $341,700
31 Map of Fort Hall Fort Hall2,654 people 35.2 2,654 $203,300
32 Twin Falls Twin Falls54,164 people 35.1 54,164 $321,300
33 Post Falls43,391 people 35.0 43,391 $477,400
34 Map of Fruitland Fruitland6,663 people 34.8 6,663 $329,600
35 Map of Blackfoot Blackfoot12,782 people 34.7 12,782 $262,500
36 Malad City2,601 people 34.4 2,601 $249,400
37 Preston5,928 people 34.2 5,928 $350,300
38 Map of Buhl Buhl4,673 people 34.2 4,673 $247,500
39 Map of Homedale Homedale3,069 people 34.0 3,069 $238,000
40 Nampa110,319 people 33.9 110,319 $370,800
41 Map of Idaho Falls Idaho Falls67,725 people 33.7 67,725 $335,500
42 Map of Heyburn Heyburn3,693 people 33.7 3,693 $237,800
43 Map of Filer Filer2,925 people 33.7 2,925 $247,500
44 Map of Pocatello Pocatello57,635 people 33.1 57,635 $271,000
45 Map of American Falls American Falls4,712 people 33.0 4,712 $185,600
46 Ammon19,064 people 32.9 19,064 $381,800
47 Map of Gooding Gooding3,778 people 32.6 3,778 $186,100
48 Map of St. Anthony St. Anthony3,911 people 32.4 3,911 $231,900
49 Map of Kimberly Kimberly5,111 people 32.2 5,111 $339,400
50 Kuna27,158 people 31.8 27,158 $423,900
51 Mountain Home Mountain Home16,493 people 31.7 16,493 $309,400
52 Map of Caldwell Caldwell66,516 people 31.5 66,516 $367,300
53 Rigby5,404 people 31.4 5,404 $336,200
54 Burley Burley11,958 people 31.2 11,958 $231,300
55 Map of Jerome Jerome12,930 people 30.9 12,930 $225,400
56 Map of Shelley Shelley5,092 people 30.8 5,092 $295,200
57 Map of Rupert Rupert6,190 people 29.5 6,190 $205,200
58 Lincoln4,002 people 28.9 4,002 $377,500
59 Aberdeen2,564 people 28.2 2,564 $174,500
60 Iona2,984 people 27.3 2,984 $420,300
61 Map of Moscow Moscow26,286 people 25.7 26,286 $376,400
62 Mountain Home AFB3,219 people 22.9 3,219 —
63 Rexburg40,543 people 21.0 40,543 $395,100

How this ranking works

We rank every town by the median age of residents — often lake, mountain and retirement towns. The town with the highest 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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