The Darrell Winslow Regatta at Sandy Run Regional Park in Fairfax Station. (John McDonnell/The Washington Post)

A report released Tuesday by the Robert Wood Johnson Foundation and University of Wisconsin declared Fairfax County the healthiest Virginia area overall. According to the report, only 7 percent of Fairfax County residents report poor or fair health, and the adult obesity rate clocks in at 24 percent.

The report methodology took into account mortality rates (specifically, deaths before age 75) and morbidity rates, the term used to describe how healthy people feel, among other factors.

Fairfax is followed by Arlington, Loudoun, Albemarle and York. The city of Petersburg, with a 29 percent adult obesity rate, rounds out the bottom of the list.

In Maryland, Howard County took top honors, while Baltimore City, where 18 percent of people reported poor or fair health and adult obesity is at 31 percent, ranked lowest.