Riverdale is a city in Weber County, Utah, United States. The population was 7,656 at the 2000 census. It is part of the Ogden–Clearfield, Utah Metropolitan Statistical Area.
Riverdale is located at 41°10′43″N 112°0′15″W / 41.17861°N 112.00417°W / 41.17861; -112.00417 (41.178664, -112.004136).
According to the United States Census Bureau, the city has a total area of 4.4 square miles (11.5 km²), all of it land.