Counties Ranked by Infant Mortality Rate
All 1,365 U.S. counties ranked by infant mortality rate. The lowest is Marin County, CA at 1.6, and the highest is Bristol city, VA at 28.9. Data from County Health Rankings.
What is Infant Mortality Rate?
Number of deaths of infants under one year of age per 1,000 live births. This is one of the most widely used indicators of population health and healthcare quality.
Infant mortality in the U.S. is higher than in most other developed countries. Rates are strongly influenced by access to prenatal care, maternal health, poverty, and racial disparities.
Key Findings
The lowest infant mortality rate is found in Marin County, CA at 1.6, followed by San Francisco County, CA (2.6) and Placer County, CA (2.7). The median county value is 6.4. At the other end, Lewis County, WV has the highest value at 16.2. CA has 5 counties in the top 20.
Infant Mortality Rate by County
United States — Infant Mortality Rate by County
Source: U.S. Census Bureau — ACS 5-Year Estimates. All values are estimates subject to margin of error.
All Counties Ranked
1,365 counties ranked from highest to lowest. Click any county to view its full profile.
Based on the County Health Rankings, a collaboration between the Robert Wood Johnson Foundation and the University of Wisconsin Population Health Institute. All values are estimates subject to margin of error. For more information, see our methodology.