Youngest County in Every State

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Source: Joel Carillet / Getty Images

46. Virginia: Lexington
> Median age: 21.6 years (county), 38.0 years (state)
> Pop. under 18: 7.6% (county), 22.3% (state)
> Population: 7,113
> Life expectancy: 80.3 years
> County seat: N/A

Source: redfishweb / Getty Images

47. Washington: Whitman County
> Median age: 24.5 years (county), 37.6 years (state)
> Pop. under 18: 15.1% (county), 22.5% (state)
> Population: 47,794
> Life expectancy: 81.4 years
> County seat: Colfax

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48. West Virginia: Monongalia County
> Median age: 30.9 years (county), 42.2 years (state)
> Pop. under 18: 16.3% (county), 20.5% (state)
> Population: 103,715
> Life expectancy: 79.2 years
> County seat: Morgantown

Source: Royalbroil / Wikimedia Commons

49. Wisconsin: Menominee County
> Median age: 31.4 years (county), 39.2 years (state)
> Pop. under 18: 32.4% (county), 22.5% (state)
> Population: 4,506
> Life expectancy: 72.8 years
> County seat: Keshena

Source: RiverNorthPhotography / Getty Images

50. Wyoming: Albany County
> Median age: 27.1 years (county), 37.0 years (state)
> Pop. under 18: 16.4% (county), 23.7% (state)
> Population: 37,944
> Life expectancy: 80.5 years
> County seat: Laramie