Per Montgomery County: Montgomery County ranks as the healthiest county in Maryland in the annual County Health Rankings (CHR). According to the 2023 rankings, the five healthiest counties in Maryland are Montgomery County, followed by Howard County, Frederick County, Calvert County and St. Mary’s County. The CHR, a collaboration of the University of Wisconsin Population Health Institute and the Robert Wood Johnson Foundation, annually compares counties within each state on more than 30 factors that impact health, including social determinants such as education, jobs, housing, exercise, commuting times and more.
Several factors influence how well and how long people live. These include behavioral habits such as physical activity, nutrition, and smoking, in addition to factors from the built environment, such as access to affordable housing and well-paying jobs.