The Oldest County in Every State

Source: Djzanni / Wikimedia Commons

Hawaii: Kalawao County
> Median Age: 43.8 years (state: 39.4 years)
> Population 65 and over: 2.1% (state: 18.4%)
> Total population: 436
> Life expectancy: N/A
> County seat: None

Source: Karthikc123 / Wikimedia Commons

Idaho: Adams County
> Median Age: 55.3 years (state: 36.6 years)
> Population 65 and over: 30.1% (state: 15.8%)
> Total population: 4,200
> Life expectancy: 80.1 years
> County seat: Council

Source: Public Domain / Wikimedia Commons

Illinois: Pope County
> Median Age: 56.8 years (state: 38.3 years)
> Population 65 and over: 30.6% (state: 15.7%)
> Total population: 4,177
> Life expectancy: 80.3 years
> County seat: Golconda

Source: Kenneth_Keifer / Getty Images

Indiana: Brown County
> Median Age: 49.3 years (state: 37.8 years)
> Population 65 and over: 24.3% (state: 15.7%)
> Total population: 15,093
> Life expectancy: 79.1 years
> County seat: Nashville

Source: Nst101 / Wikimedia Commons

Iowa: Audubon County
> Median Age: 48.5 years (state: 38.3 years)
> Population 65 and over: 24.7% (state: 17.1%)
> Total population: 5,528
> Life expectancy: 76.4 years
> County seat: Audubon

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