Youngest County in Every State

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Source: Túlio Assis / Flickr

41. South Dakota: Todd County
> Median age: 24.4 years (county), 36.8 years (state)
> Pop. under 18: 40.1% (county), 24.7% (state)
> Population: 10,016
> Life expectancy: 68.5 years
> County seat: Winner

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42. Tennessee: Montgomery County
> Median age: 30.5 years (county), 38.6 years (state)
> Pop. under 18: 27.0% (county), 22.7% (state)
> Population: 192,120
> Life expectancy: 76.7 years
> County seat: Clarksville

Source: phototram / Wikimedia Commons

43. Texas: Brazos County
> Median age: 25.8 years (county), 34.3 years (state)
> Pop. under 18: 20.6% (county), 26.3% (state)
> Population: 214,231
> Life expectancy: 79.9 years
> County seat: Bryan

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44. Utah: Utah County
> Median age: 24.5 years (county), 30.5 years (state)
> Pop. under 18: 34.5% (county), 30.4% (state)
> Population: 576,496
> Life expectancy: 80.8 years
> County seat: Provo

Source: Thinkstock

45. Vermont: Chittenden County
> Median age: 36.6 years (county), 42.8 years (state)
> Pop. under 18: 18.4% (county), 19.2% (state)
> Population: 160,985
> Life expectancy: 81.4 years
> County seat: Burlington