Fast Facts About Foster, RI What to know about living in Foster. Population (2020): 6,617 Distance from: Boston, MA: 1hr 26min Hartford, CT: 1hr 3min Providence, RI: 31min Nearest airport: Providence – 36min Median income (2020): Individual: $36,839 Household: $96,985 County: Providence County Type of location: Town Why is Foster a Nice Place to Live? […]