Special Report

The Youngest County in Every State

Source: Jeffrey Beall / Wikimedia Commons

Colorado: Alamosa County
> Median age: 31.8 years (state: 36.7 years)
> Population under 18: 24.4% (state: 22.5%)
> Population 65 and over: 13.2% (state: 13.8%)
> Total population: 16,107
> Largest place in county: Alamosa

Source: jjbers / Flickr

Connecticut: Tolland County
> Median age: 37.7 years (state: 41.0 years)
> Population under 18: 17.6% (state: 20.8%)
> Population 65 and over: 15.3% (state: 16.8%)
> Total population: 151,063
> Largest place in county: Storrs

Source: JERRYE & ROY KLOTZ MD / Wikimedia Commons

Delaware: Kent County
> Median age: 37.7 years (state: 40.6 years)
> Population under 18: 23.1% (state: 21.3%)
> Population 65 and over: 16.6% (state: 18.2%)
> Total population: 176,699
> Largest place in county: Dover

Source: Michael Rivera / Wikimedia Commons

Florida: Leon County
> Median age: 31.0 years (state: 42.0 years)
> Population under 18: 18.7% (state: 20.0%)
> Population 65 and over: 12.9% (state: 20.1%)
> Total population: 289,770
> Largest place in county: Tallahassee

Source: Sean Pavone / iStock via Getty Images

Georgia: Chattahoochee County
> Median age: 24.5 years (state: 36.7 years)
> Population under 18: 21.3% (state: 24.1%)
> Population 65 and over: 3.2% (state: 13.5%)
> Total population: 10,560
> Largest place in county: Cusseta-Chattahoochee County