Camas’ Prune Hill area has large houses on sidewalk-lined streets. It’s home to trails, parks and Lacamas Athletic Club, and its inhabitants are generally wealthy, educated homeowners.So, this may be no surprise: Prune Hill has the highest life expectancy of anywhere in Clark County. On average a person residing there can expect to live 85.3 years, according to recently released estimates from the National Center for Health Statistics.Aside from her student days at the University of Washington in Seattle, Nan Henriksen, who’s 77, has lived in Camas her entire life. She said Camas’ green spaces, trails and proximity to the Columbia River Gorge National Scenic Area encourage people to be active outside. When she was mayor in the 1980s and early 1990s, the Camas City Council focused on ways to preserve and improve quality of life while also trying to attract businesses to its industrial park.“I think you’d be hard-pressed to find a community that has more convenient trails,” Henriksen said, adding that green space is important for psychological and physical health.Of course, residents’ socioeconomic status is a major advantage. The median household income in Prune Hill is $132,910.“We’re blessed to have so many inhabitants who can afford good health care and are aware of healthy living,” Henriksen said.Nathan Murphy is the manager of Lacamas Athletic Club, which has 3,500 members. The club just celebrated a 78-year-old man who took his 100th high-intensity interval training class. The club offers swimming pools, water aerobics classes and partnerships with SilverSneakers and Silver&Fit, health and fitness programs providing no-cost gym memberships for older adults through certain insurance carriers.