Smartsville is a census-designated place in Yuba County, California, United States,[6] in the foothills of the Sierra Nevada.

[5] Located at an altitude of 669 feet (204 m), Smartsville lies about 15 miles (24 km) east-northeast of Marysville,[2] along State Route 20.

Smartsville is named for James Smart, a local hotel proprietor during the days of the Gold Rush.

Postal Service), Smartsville became Smartville in 1909; this change was strengthened by a similar ruling by the United States Board on Geographic Names in 1947.

According to the United States Census Bureau, the CDP covers an area of 0.7 square miles (1.9 km2), all of it land.

There were 70 housing units at an average density of 97.6 per square mile (37.7/km2), of which 42 (71.2%) were owner-occupied, and 17 (28.8%) were occupied by renters.