Fast Facts About Johnston, RI What to know about living in Johnston. Population (2020): 29,534 Distance from: Boston, MA: 1hr 15min Hartford, CT: 1hr 28min Providence, RI: 20min Nearest airport: Providence – 23min Median income (2020): Individual: $35,108 Household: $68,859 County: Providence County Type of location: Town Why is Johnston a Nice Place to Live? […]