Marin is undergoing an unprecedented population shift. Residents are living longer than ever before, and the number of older adults continues to climb. 

Today, adults age 60 and over represent 28 percent of the population, making Marin one of the oldest counties in California, and their share will keep rising. By 2025, one in three residents will have celebrated their 60th birthday, and in 10 years, 38 percent will have passed this milestone. The population…