Kent County is a county located in the U.S. state of Rhode Island. As of the 2020 census, the population was 170,363, making it the second-most populous county in Rhode Island. The county was formed in 1750 from the southern third of Providence County. It was named after the county of Kent, England. Kent County, like other counties in Rhode Island, no longer has governmental functions. Its seat is East Greenwich. Kent County is included in the Providence-Warwick, RI-MA Metropolitan Statistical Area, which in turn constitutes a portion of the greater Boston-Worcester-Providence, MA-RI-NH-CT Combined Statistical Area.

Providence County is the most populous county in the U.S. state of Rhode Island. As of the 2020 census, the county's population was 660,741, or 60.2% of the state's population. Providence County contains the city of Providence, the state capital of Rhode Island and the county's most populous city, with an estimated 190,934 residents in 2020. Providence County is included in the Providence-Warwick, RI-MA Metropolitan Statistical Area, which in turn constitutes a portion of the greater Boston-Worcester-Providence, MA-RI-NH-CT Combined Statistical Area. As of 2010, the center of population in Rhode Island is located in Providence County, in the city of Cranston.