Youngest Cities in Idaho.

Cities in Idaho with the youngest populations by median age.

#	City	Population	Median Age	Population Growth
1	Rexburg	40,543	21.0	+1.4%
2	Moscow	26,286	25.7	+4.9%
3	Jerome	12,930	30.9	+11.2%
4	Burley	11,958	31.2	+5.9%
5	Caldwell	66,516	31.5	+27.4%
6	Mountain Home	16,493	31.7	+4.6%
7	Kuna	27,158	31.8	+30.8%
8	Ammon	19,064	32.9	+13.5%
9	Pocatello	57,635	33.1	+3.6%
10	Idaho Falls	67,725	33.7	+9.4%
11	Nampa	110,319	33.9	+19.9%
12	Blackfoot	12,782	34.7	+7.7%
13	Post Falls	43,391	35.0	+21.0%
14	Twin Falls	54,164	35.1	+8.4%
15	Chubbuck	16,126	35.9	+7.9%
16	Middleton	10,649	36.1	+33.3%
17	Rathdrum	10,874	37.1	+43.6%
18	Meridian	130,138	37.5	+21.4%
19	Boise	237,242	38.6	+1.1%
20	Lewiston	34,651	39.8	+1.5%
21	Coeur d'Alene	56,447	40.1	+6.5%
22	Star	14,745	40.3	+84.6%
23	Hayden	16,338	42.1	+11.6%
24	Garden City	12,654	42.3	+6.1%
25	Eagle	32,855	47.6	+11.2%