According to the United States Census Bureau, the city has a total area of , of which is land and (28.46%) is water. Warwick's entire eastern edge is waterfront, starting with the Providence River at its northern border with Cranston. Conimicut Point marks the end of the river and the beginning of Narragansett Bay, which extends beyond the city's southern limit on its way to the Atlantic Ocean; two southern Warwick peninsulas, Warwick Neck and Potowomut, enclose the water to form Greenwich Bay.
according to the united states census bureau the city has a total area of  of which is land and (2846%) is water warwick's entire eastern edge is waterfront starting with the providence river at its northern border with cranston conimicut point marks the end of the river and the beginning of narragansett bay which extends beyond the city's southern limit on its way to the atlantic ocean; two southern warwick peninsulas warwick neck and potowomut enclose the water to form greenwich bay