King County Health Data
King County, Washington
Health Score
95/100
Excellent
Life Expectancy
81.1 yr
Uninsured Rate
5.7%
Health Statistics
Life Expectancy
81.1 yr
State avg 78.1 yr
National avg 77.5 yr
Uninsured Rate
5.7%
State avg 9.0%
National avg 9%
Primary Care Providers
119
per 100K population
National avg 82
Mental Health Providers
638
per 100K population
National avg 350
Data Story
About Health in King County, Washington
King County lives longest in the nation
At 81.1 years, King County's life expectancy exceeds the U.S. average by roughly 5 years and sits nearly 3 years above Washington's state average of 78.1 years. Only 11.6% of residents report poor or fair health, well below national trends. This longevity reflects strong healthcare access and economic resources concentrated in the county's urban core.
Washington's health leader by a wide margin
King County ranks at the top of Washington's 39 counties for life expectancy and health outcomes. Its 5.7% uninsured rate is among the lowest in the state, compared to Washington's 9.0% average. This advantage stems from high concentrations of employers offering health benefits and advanced medical infrastructure.
Outpaces Pierce and Snohomish on every metric
King County's 81.1-year life expectancy significantly exceeds Kitsap County (79.5 years) and more distant neighbors. With 119 primary care providers per 100,000 residents, King has nearly double the availability of smaller counties like Klickitat (56 per 100K). Mental health provider density of 638 per 100K reflects major medical centers and urban concentration.
Healthcare access defines daily life here
Only 5.7% of King County residents lack health insurance, meaning the vast majority have routine access to preventive care and specialists. The county's 119 primary care providers per 100,000 residents mean most people can find a doctor within their network, and 638 mental health providers per 100K support behavioral health needs. This density of providers translates to shorter wait times and better continuity of care.
Already covered? Stay current and plan ahead
King County's low uninsured rate shows that most residents have found coverage options. If you're among the 5.7% without insurance, or if your coverage is changing, visit Washington's health insurance marketplace or contact a local enrollment specialist to explore plans that fit your needs and budget. Staying covered protects your health and financial security.
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Frequently Asked Questions
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Data Sources
Health data sourced from the County Health Rankings & Roadmaps, a collaboration between the Robert Wood Johnson Foundation and the University of Wisconsin Population Health Institute.
Data is informational only. Not medical or health advice. Coverage varies by county and reporting year.