Longest Life Expectancy by County | Healthiest Communities Health News
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Location and Life Expectancy

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.

No. 25: Judith Basin County, Montana

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.

Location and Life Expectancy

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.

No. 25: Judith Basin County, Montana

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.

No. 24: Fairfax County, Virginia

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.

No. 23: Marin County, California

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.

No. 22: San Juan County, Washington

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.

No. 21: Hudspeth County, Texas

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.

No. 20: Grand County, Colorado

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.

No. 19: Collier County, Florida

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.

No. 18: Blaine County, Idaho

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.

No. 17: Kidder County, North Dakota

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.

No. 16: Frontier County, Nebraska

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.

No. 15: Golden Valley County, North Dakota

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.

No. 14: Williamsburg, Virginia

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.

No. 13: Stanley County, South Dakota

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.

No. 12: Liberty County, Montana

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.

No. 11: Oliver County, North Dakota

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.

No. 10: Presidio County, Texas

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.

No. 9: Teton County, Wyoming

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.

No. 8: Jeff Davis County, Texas

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.

No. 7: Eagle County, Colorado

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.

No. 6: Aleutians East Borough, Alaska

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.

No. 5: Manassas Park, Virginia

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.

No. 4: Pitkin County, Colorado

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.

No. 3: Mono County, California

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.

No. 2: Summit County, Colorado

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.

No. 1: San Miguel County, Colorado

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.

These Are the Places With the Longest Life Expectancy in the U.S.

  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

Learn More about Healthiest Communities