Oldest County in Every State

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Source: adoyle / Flickr

21. Massachusetts: Barnstable County
> Median age: 52.4 years (county), 39.4 years (state)
> Pop. 65 and older: 28.5% (county), 15.5% (state)
> Population: 213,900
> Life expectancy: 80.8 years
> County seat: Barnstable

Source: MoodyGroove / Wikimedia Commons

22. Michigan: Alcona County
> Median age: 57.9 years (county), 39.6 years (state)
> Pop. 65 and older: 35.1% (county), 15.9% (state)
> Population: 10,413
> Life expectancy: 78.3 years
> County seat: Harrisville

Source: shalynn / Flickr

23. Minnesota: Aitkin County
> Median age: 54.5 years (county), 37.9 years (state)
> Pop. 65 and older: 31.4% (county), 14.6% (state)
> Population: 15,841
> Life expectancy: 80.4 years
> County seat: Aitkin

Source: BOB WESTON / Getty Images

24. Mississippi: Amite County
> Median age: 46.4 years (county), 36.9 years (state)
> Pop. 65 and older: 21.5% (county), 14.6% (state)
> Population: 12,574
> Life expectancy: 76.2 years
> County seat: Liberty

Source: BOB WESTON / Getty Images

25. Missouri: Hickory County
> Median age: 54.8 years (county), 38.4 years (state)
> Pop. 65 and older: 33.1% (county), 15.7% (state)
> Population: 9,352
> Life expectancy: 77.3 years
> County seat: Hermitage