Oldest County in Every State

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Source: freewine / Flickr

36. Oklahoma: McIntosh County
> Median age: 47.0 years (county), 36.3 years (state)
> Pop. 65 and older: 24.2% (county), 14.7% (state)
> Population: 19,874
> Life expectancy: 74.7 years
> County seat: Eufaula

Source: raschau / Flickr

37. Oregon: Wheeler County
> Median age: 57.9 years (county), 39.2 years (state)
> Pop. 65 and older: 33.5% (county), 16.3% (state)
> Population: 1,415
> Life expectancy: 79.5 years
> County seat: Fossil

Source: nicholas_t / Flickr

38. Pennsylvania: Sullivan County
> Median age: 53.1 years (county), 40.7 years (state)
> Pop. 65 and older: 26.9% (county), 17.1% (state)
> Population: 6,192
> Life expectancy: 77.0 years
> County seat: Laporte

Source: Image Source / Getty Images

39. Rhode Island: Newport County
> Median age: 44.6 years (county), 39.9 years (state)
> Pop. 65 and older: 20.1% (county), 16.1% (state)
> Population: 83,204
> Life expectancy: 81.2 years
> Largest city: Newport

Source: sirmildredpierce / Flickr

40. South Carolina: McCormick County
> Median age: 52.8 years (county), 39.0 years (state)
> Pop. 65 and older: 31.0% (county), 16.3% (state)
> Population: 9,694
> Life expectancy: 77.0 years
> County seat: McCormick