
31. New Mexico: Roosevelt County
> Median age: 29.7 years (county), 37.3 years (state)
> Pop. under 18: 24.6% (county), 23.9% (state)
> Population: 19,313
> Life expectancy: 77.9 years
> County seat: Portales

32. New York: Tompkins County
> Median age: 30.4 years (county), 38.4 years (state)
> Pop. under 18: 15.2% (county), 21.2% (state)
> Population: 104,415
> Life expectancy: 81.2 years
> County seat: Ithaca

33. North Carolina: Onslow County
> Median age: 26.0 years (county), 38.4 years (state)
> Pop. under 18: 24.5% (county), 22.8% (state)
> Population: 192,685
> Life expectancy: 77.6 years
> County seat: Jacksonville

34. North Dakota: Sioux County
> Median age: 26.9 years (county), 35.1 years (state)
> Pop. under 18: 37.5% (county), 22.9% (state)
> Population: 4,420
> Life expectancy: 68.6 years
> County seat: Fort Yates

35. Ohio: Athens County
> Median age: 28.6 years (county), 39.3 years (state)
> Pop. under 18: 15.0% (county), 22.6% (state)
> Population: 65,563
> Life expectancy: 76.9 years
> County seat: Athens
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