Longest Life Expectancy by County | Healthiest Communities Health News

Social factors associated with where people live can play a crucial role in shaping their health and well-being. Wealthier and more educated people, for example, tend to live longer than those who are poorer or less educated.

The 2021 Healthiest Communities rankings assess nearly 3,000 U.S. counties and county equivalents across 84 factors that shape and show the health of a community and its residents, in categories including the economy, equity, public safety, food and nutrition, and housing. The fourth annual project from U.S. News also allows comparisons between communities across these dozens of metrics, which include life expectancy.

These are the counties with the longest average life expectancies at birth for the period 2016-2018, based on data obtained from the University of Wisconsin Population Health Institute’s County Health Rankings & Roadmaps program and incorporated into the Healthiest Communities analysis. Also included are the margin of error for the life expectancy measurements, as well as communities’ overall Healthiest Communities scores, rankings and population health category scores. Population figures listed are taken from 2019 Census Bureau estimates.

Scores are out of 100 points, and you can learn more about how communities were ranked and scored in our methodology.

Population: 2,007

Life expectancy: 85.29

Error margin: 81.3-89.3

Population Health score: N/A*

Overall score: N/A*

Overall rank: N/A*

Learn more about Judith Basin County.

*Some counties were excluded from Healthiest Communities analysis. Learn more here.

Population: 1.1 million

Life expectancy: 85.3

Error margin: 85.1-85.5

Population Health score: 96.6

Overall score: 86.1

Overall rank: 14

Learn more about Fairfax County.

Population: 258,826

Life expectancy: 85.4

Error margin: 85.0-85.7

Population Health score: 90.5

Overall score: 80.4

Overall rank: 49

Learn more about Marin County.

Population: 17,582

Life expectancy: 85.5

Error margin: 83.9-87.1

Population Health score: 87.1

Overall score: 84.5

Overall rank: 21

Learn more about San Juan County.

Population: 4,886

Life expectancy: 85.7

Error margin: 79.8-91.6

Population Health score: 33.0

Overall score: 23.5

Overall rank: Not ranked

Learn more about Hudspeth County.

Population: 15,734

Life expectancy: 86.0

Error margin: 83.1-88.8

Population Health score: 76.9

Overall score: 71.7

Overall rank: 191

Learn more about Grand County.

Population: 384,902

Life expectancy: 86.1

Error margin: 85.7-86.4

Population Health score: 69.5

Overall score: 54.9

Overall rank: Not ranked

Learn more about Collier County.

Population: 23,021

Life expectancy: 86.2

Error margin: 84.5-87.9

Population Health score: 73.7

Overall score: 74.2

Overall rank: 136

Learn more about Blaine County.

Population: 2,480

Life expectancy: 86.598

Error margin: 81.9-91.3

Population Health score: N/A*

Overall score: N/A*

Overall rank: N/A*

Learn more about Kidder County.

*Some counties were excluded from Healthiest Communities analysis. Learn more here.

Population: 2,627

Life expectancy: 86.604

Error margin: 82.2-91.0

Population Health score: N/A*

Overall score: N/A*

Overall rank: N/A*

Learn more about Frontier County.

*Some counties were excluded from Healthiest Communities analysis. Learn more here.

Population: 1,761

Life expectancy: 87.58

Error margin: 80.4-94.8

Population Health score: N/A*

Overall score: N/A*

Overall rank: N/A*

Learn more about Golden Valley County.

*Some counties were excluded from Healthiest Communities analysis. Learn more here.

Population: 14,954

Life expectancy: 87.65

Error margin: 85.5-89.8

Population Health score: 75.2

Overall score: 56.7

Overall rank: Not ranked

Learn more about the city of Williamsburg.

Population: 3,098

Life expectancy: 88.0

Error margin: 80.2-95.9

Population Health score: N/A*

Overall score: N/A*

Overall rank: N/A*

Learn more about Stanley County.

*Some counties were excluded from Healthiest Communities analysis. Learn more here.

Population: 2,337

Life expectancy: 88.7

Error margin: 83.7-93.7

Population Health score: N/A*

Overall score: N/A*

Overall rank: N/A*

Learn more about Liberty County.

*Some counties were excluded from Healthiest Communities analysis. Learn more here.

Population: 1,959

Life expectancy: 89.1

Error margin: 81.9-96.3

Population Health score: N/A*

Overall score: N/A*

Overall rank: N/A*

Learn more about Oliver County.

*Some counties were excluded from Healthiest Communities analysis. Learn more here.

Population: 6,704

Life expectancy: 89.2

Error margin: 85.0-93.3

Population Health score: 39.1

Overall score: 19.6

Overall rank: Not ranked

Learn more about Presidio County.

Population: 23,464

Life expectancy: 89.5

Error margin: 87.3-91.7

Population Health score: 84.8

Overall score: 86.1

Overall rank: 13

Learn more about Teton County.

Population: 2,274

Life expectancy: 89.7

Error margin: 83.5-95.8

Population Health score: N/A*

Overall score: N/A*

Overall rank: N/A*

Learn more about Jeff Davis County.

*Some counties were excluded from Healthiest Communities analysis. Learn more here.

Population: 55,127

Life expectancy: 90.1

Error margin: 87.8-92.4

Population Health score: 83.0

Overall score: 78.3

Overall rank: 68

Learn more about Eagle County.

Population: 3,337

Life expectancy: 91.1

Error margin: 82.1-100+

Population Health score: N/A*

Overall score: N/A*

Overall rank: N/A*

Learn more about Aleutians East Borough.

*Some counties were excluded from Healthiest Communities analysis. Learn more here.

Population: 17,478

Life expectancy: 92.5

Error margin: 83.2-100+

Population Health score: 73.1

Overall score: 67.1

Overall rank: 352

Learn more about the city of Manassas Park.

Population: 17,767

Life expectancy: 93.4

Error margin: 89.5-97.3

Population Health score: 90.9

Overall score: 88.2

Overall rank: 7

Learn more about Pitkin County.

Population: 14,444

Life expectancy: 96.5

Error margin: 89.5-100+

Population Health score: 81.8

Overall score: 74.6

Overall rank: 129

Learn more about Mono County.

Population: 31,011

Life expectancy: 96.8

Error margin: 90.2-100+

Population Health score: 85.2

Overall score: 83.1

Overall rank: 26

Learn more about Summit County.

Population: 8,179

Life expectancy: 100+

Error margin: 83.3-100+

Population Health score: 82.6

Overall score: 89.2

Overall rank: 6

Learn more about San Miguel County.

1. San Miguel County, Colorado
2. Summit County, Colorado
3. Mono County, California
4. Pitkin County, Colorado
5. Manassas Park, Virginia
6. Aleutians East Borough, Alaska
7. Eagle County, Colorado
8. Jeff Davis County, Texas
9. Teton County, Wyoming
10. Presidio County, Texas
11. Oliver County, North Dakota
12. Liberty County, Montana
13. Stanley County, South Dakota
14. Williamsburg, Virginia
15. Golden Valley County, North Dakota
16. Frontier County, Nebraska
17. Kidder County, North Dakota
18. Blaine County, Idaho
19. Collier County, Florida
20. Grand County, Colorado
21. Hudspeth County, Texas
22. San Juan County, Washington
23. Marin County, California
24. Fairfax County, Virginia
25. Judith Basin County, Montana