According to U.S. Census Bureau projections, retirement-age adults will outnumber Americans under age 18 by 2035 for the first time in history. The aging of the U.S. population is driven by a falling birth rate and long-term improvements in life expectancy. While these demographic shifts are novel on a national scale, in many parts of the country, they are nothing new.
The median age in the United States is 38 years and is projected to hit 43 years as early as 2060. Age demographics vary considerably by region, and in every state, there are counties where the median age already exceeds Census Bureau’s 2060 projection. 24/7 Wall St. reviewed median age by county to identify the oldest county in every state.
Click here to see the oldest county in every state.
Click here to see our methodology.
As the population ages, the United States will face new economic and public policy challenges. These challenges include increased health care, social security, and pension expenditures, with fewer workers to foot the bill.
There are currently about 24 retirement-age adults for every 100 working-age adults nationwide. In half of the counties on this list, the old age dependency ratio is at least double the national ratio. In Sumter County, Florida, the oldest county on this list, there are 141 residents age 65 or older for every 100 adults between the ages of 18 and 64.
These counties with a higher median age tend to have relatively small populations that are only getting smaller. Only four counties on this list have populations of over 100,000, and the vast majority of them are home to fewer people now than they were five years ago. Litchfield, Connecticut, is not only the oldest, but also the fastest shrinking, county in the state.
1. Alabama: Cherokee County
> Median age: 46.1 years (county), 38.7 years (state)
> Pop. 65 and older: 21.0% (county), 15.7% (state)
> Population: 25,855
> Life expectancy: 75.1 years
> County seat: Centre
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2. Alaska: Wrangell City and Borough
> Median age: 49.1 years (borough), 33.9 years (state)
> Pop. 65 and older: 22.4% (borough), 10.1% (state)
> Population: 2,475
> Life expectancy: 78.2 years
> Borough seat: Wrangell
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3. Arizona: La Paz County
> Median age: 56.0 years (county), 37.2 years (state)
> Pop. 65 and older: 37.3% (county), 16.2% (state)
> Population: 20,477
> Life expectancy: 80.7 years
> County seat: Parker
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4. Arkansas: Baxter County
> Median age: 51.8 years (county), 37.9 years (state)
> Pop. 65 and older: 30.5% (county), 16% (state)
> Population: 41,093
> Life expectancy: 76.9 years
> County seat: Mountain Home
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5. California: Sierra County
> Median age: 55.0 years (county), 36.1 years (state)
> Pop. 65 and older: 26.4% (county), 13.2% (state)
> Population: 2,885
> Life expectancy: 79.0 years
> County seat: Downieville
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6. Colorado: Mineral County
> Median age: 58.5 years (county), 36.5 years (state)
> Pop. 65 and older: 32.4% (county), 13% (state)
> Population: 834
> Life expectancy: 81.3 years
> County seat: Creede
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7. Connecticut: Litchfield County
> Median age: 46.9 years (county), 40.8 years (state)
> Pop. 65 and older: 19.2% (county), 16% (state)
> Population: 184,454
> Life expectancy: 80.7 years
> Largest city: Torrington
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8. Delaware: Sussex County
> Median age: 48.3 years (county), 39.8 years (state)
> Pop. 65 and older: 25.2% (county), 17% (state)
> Population: 215,551
> Life expectancy: 78.8 years
> County seat: Georgetown
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9. Florida: Sumter County
> Median age: 66.4 years (county), 41.8 years (state)
> Pop. 65 and older: 54.2% (county), 19.4% (state)
> Population: 116,754
> Life expectancy: 81.7 years
> County seat: Bushnell
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10. Georgia: Union County
> Median age: 53.8 years (county), 36.4 years (state)
> Pop. 65 and older: 31.6% (county), 12.7% (state)
> Population: 22,262
> Life expectancy: 78.4 years
> County seat: Blairsville
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11. Hawaii: Kalawao County
> Median age: 57.6 years (county), 38.8 years (state)
> Pop. 65 and older: 14.0% (county), 16.7% (state)
> Population: 86
> Life expectancy: 81.0 years
> Largest city: Kalaupapa
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12. Idaho: Custer County
> Median age: 53.4 years (county), 35.9 years (state)
> Pop. 65 and older: 29.4% (county), 14.6% (state)
> Population: 4,141
> Life expectancy: 80.4 years
> County seat: Challis
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13. Illinois: Pope County
> Median age: 52.2 years (county), 37.7 years (state)
> Pop. 65 and older: 27.9% (county), 14.4% (state)
> Population: 4,360
> Life expectancy: 78.0 years
> County seat: Golconda
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14. Indiana: Brown County
> Median age: 49.3 years (county), 37.5 years (state)
> Pop. 65 and older: 23.0% (county), 14.6% (state)
> Population: 15,007
> Life expectancy: 79.4 years
> County seat: Nashville
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15. Iowa: Dickinson County
> Median age: 48.7 years (county), 38.1 years (state)
> Pop. 65 and older: 24.3% (county), 16.1% (state)
> Population: 17,000
> Life expectancy: 81.3 years
> County seat: Spirit Lake
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16. Kansas: Jewell County
> Median age: 51.9 years (county), 36.3 years (state)
> Pop. 65 and older: 28.4% (county), 14.7% (state)
> Population: 2,963
> Life expectancy: 80.0 years
> County seat: Mankato
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17. Kentucky: Lyon County
> Median age: 49.2 years (county), 38.6 years (state)
> Pop. 65 and older: 24.1% (county), 15.2% (state)
> Population: 8,268
> Life expectancy: 76.6 years
> County seat: Eddyville
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18. Louisiana: Tensas Parish
> Median age: 44.0 years (parish), 36.4 years (state)
> Pop. 65 and older: 21.9% (parish), 14.1% (state)
> Population: 4,771
> Life expectancy: 74.4 years
> Parish seat: Saint Joseph
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19. Maine: Piscataquis County
> Median age: 50.7 years (county), 44.3 years (state)
> Pop. 65 and older: 24.6% (county), 18.8% (state)
> Population: 16,960
> Life expectancy: 78.0 years
> County seat: Dover-Foxcroft
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20. Maryland: Talbot County
> Median age: 49.7 years (county), 38.5 years (state)
> Pop. 65 and older: 26.9% (county), 14.2% (state)
> Population: 37,461
> Life expectancy: 80.5 years
> County seat: Easton
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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
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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
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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
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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
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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
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26. Montana: Golden Valley County
> Median age: 54.0 years (county), 39.8 years (state)
> Pop. 65 and older: 22.5% (county), 17.1% (state)
> Population: 747
> Life expectancy: 79.7 years
> County seat: Ryegate
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27. Nebraska: Hooker County
> Median age: 58.0 years (county), 36.3 years (state)
> Pop. 65 and older: 35.8% (county), 14.7% (state)
> Population: 684
> Life expectancy: 80.4 years
> County seat: Mullen
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28. Nevada: Storey County
> Median age: 54.7 years (county), 37.7 years (state)
> Pop. 65 and older: 31.8% (county), 14.6% (state)
> Population: 3,891
> Life expectancy: 82.1 years
> County seat: Virginia City
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29. New Hampshire: Carroll County
> Median age: 51.4 years (county), 42.7 years (state)
> Pop. 65 and older: 25.3% (county), 16.5% (state)
> Population: 47,524
> Life expectancy: 80.8 years
> County seat: Ossipee
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30. New Jersey: Cape May County
> Median age: 48.7 years (county), 39.6 years (state)
> Pop. 65 and older: 24.5% (county), 15.1% (state)
> Population: 94,549
> Life expectancy: 78.1 years
> County seat: Cape May Court House
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31. New Mexico: Catron County
> Median age: 60.2 years (county), 37.3 years (state)
> Pop. 65 and older: 39.2% (county), 15.8% (state)
> Population: 3,547
> Life expectancy: 80.1 years
> County seat: Reserve
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32. New York: Hamilton County
> Median age: 53.7 years (county), 38.4 years (state)
> Pop. 65 and older: 27.6% (county), 15.2% (state)
> Population: 4,646
> Life expectancy: 79.3 years
> County seat: Lake Pleasant
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33. North Carolina: Polk County
> Median age: 52.1 years (county), 38.4 years (state)
> Pop. 65 and older: 28.3% (county), 15.1% (state)
> Population: 20,434
> Life expectancy: 78.9 years
> County seat: Columbus
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34. North Dakota: McIntosh County
> Median age: 53.5 years (county), 35.1 years (state)
> Pop. 65 and older: 32.1% (county), 14.4% (state)
> Population: 2,680
> Life expectancy: 80.6 years
> County seat: Ashley
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35. Ohio: Noble County
> Median age: 48.7 years (county), 39.3 years (state)
> Pop. 65 and older: 25.1% (county), 15.9% (state)
> Population: 14,498
> Life expectancy: 81.1 years
> County seat: Caldwell
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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
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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
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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
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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
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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
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41. South Dakota: Custer County
> Median age: 53.8 years (county), 36.8 years (state)
> Pop. 65 and older: 26.9% (county), 15.4% (state)
> Population: 8,519
> Life expectancy: 80.0 years
> County seat: Custer
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42. Tennessee: Cumberland County
> Median age: 50.5 years (county), 38.6 years (state)
> Pop. 65 and older: 29.5% (county), 15.4% (state)
> Population: 58,178
> Life expectancy: 77.6 years
> County seat: Crossville
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43. Texas: Loving County
> Median age: 57.5 years (county), 34.3 years (state)
> Pop. 65 and older: 24.3% (county), 11.7% (state)
> Population: 74
> Life expectancy: 73.9 years
> County seat: Mentone
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44. Utah: Daggett County
> Median age: 47.3 years (county), 30.5 years (state)
> Pop. 65 and older: 17.0% (county), 10.3% (state)
> Population: 702
> Life expectancy: 81.3 years
> County seat: Manila
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45. Vermont: Essex County
> Median age: 50.0 years (county), 42.8 years (state)
> Pop. 65 and older: 23.9% (county), 17.5% (state)
> Population: 6,203
> Life expectancy: 79.7 years
> County seat: Guildhall
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46. Virginia: Highland County
> Median age: 60.5 years (county), 38.0 years (state)
> Pop. 65 and older: 38.8% (county), 14.2% (state)
> Population: 2,213
> Life expectancy: 79.8 years
> County seat: Monterey
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47. Washington: Jefferson County
> Median age: 57.1 years (county), 37.6 years (state)
> Pop. 65 and older: 33.0% (county), 14.4% (state)
> Population: 30,524
> Life expectancy: 81.3 years
> County seat: Port Townsend
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48. West Virginia: Pendleton County
> Median age: 49.9 years (county), 42.2 years (state)
> Pop. 65 and older: 25.1% (county), 18.3% (state)
> Population: 7,138
> Life expectancy: 79.3 years
> County seat: Franklin
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49. Wisconsin: Iron County
> Median age: 53.8 years (county), 39.2 years (state)
> Pop. 65 and older: 28.6% (county), 15.6% (state)
> Population: 5,748
> Life expectancy: 79.3 years
> County seat: Hurley
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50. Wyoming: Hot Springs County
> Median age: 49.7 years (county), 37.0 years (state)
> Pop. 65 and older: 25.0% (county), 14.4% (state)
> Population: 4,741
> Life expectancy: 77.1 years
> County seat: Thermopolis
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Methodology:
To identify the oldest county in each state, 24/7 Wall St. reviewed the median age of each U.S. county from the U.S. Census Bureau’s 2017 American Community Survey. Data on the share of residents 65 and older, population change, and old age dependency ratio also came from the ACS. In Alaska, county equivalents are referred to as boroughs or census areas, and in Louisiana, parishes are county equivalents. In counties without a county seat, the most populous city is listed.
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