How Iowa Compares

Iowa

38.6 years

National

38.9 years

0.8% below

State Ranking

Rank	State	Value
#31	Virginia	39.0 years
#32	Tennessee	38.9 years
#33	Minnesota	38.8 years
#34	Iowa	38.6 years
#35	Mississippi	38.6 years
#36	Arkansas	38.5 years
#37	Washington	38.3 years

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Highest Age Counties in Iowa

#	County	Age
1	Dickinson County	48.7 years
2	Audubon County	47.0 years
3	Fremont County	46.8 years
4	Guthrie County	46.7 years
5	Clayton County	46.4 years
6	Adams County	46.3 years
7	Sac County	46.2 years
8	Hardin County	45.4 years
9	Page County	45.1 years
10	Jackson County	44.7 years

Lowest Age Counties in Iowa

#	County	Age
99	Story County	26.9 years
98	Johnson County	31.0 years
97	Sioux County	33.8 years
96	Buena Vista County	35.6 years
95	Black Hawk County	35.7 years
94	Woodbury County	36.1 years
93	Decatur County	36.1 years
92	Dallas County	36.1 years
91	Polk County	36.2 years
90	Davis County	36.3 years

Median Age in Iowa

Iowa has a median age of 38.6 years, ranking #34 of 52 among all 52 states and territories. This is 0.8% below the national value of 38.9 years.

Across Iowa's 99 counties, median age ranges from 26.9 years to 48.7 years. The county with the highest value is Dickinson County at 48.7 years.

The median age of the total population.

About this data

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024). All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.