Sunnyside, Fresno County, California

Sunnyside
Location in Fresno County and the state of California
Sunnyside
Location in California
Coordinates: 36°44′57″N 119°41′58″W / 36.74917°N 119.69944°W / 36.74917; -119.69944
Country United States
State California
CountyFresno County
Area
 • Total
1.913 sq mi (4.955 km2)
 • Land1.913 sq mi (4.955 km2)
 • Water0 sq mi (0 km2)  0%
Elevation
330 ft (100 m)
Population
 (2020)
 • Total
4,627
 • Density2,419/sq mi (933.8/km2)
Time zoneUTC-8 (Pacific (PST))
 • Summer (DST)UTC-7 (PDT)
GNIS feature IDs1659922; 2583154
U.S. Geological Survey Geographic Names Information System: Sunnyside, Fresno County, California; U.S. Geological Survey Geographic Names Information System: Sunnyside, Fresno County, California

Sunnyside (formerly, Maltermoro) is a census-designated place in Fresno County, California. It is located on the Southern Pacific Railroad 5 miles (8 km) north-northeast of Malaga, at an elevation of 328 ft (100 m). It is an eastern suburb of Fresno. At the 2020 census, Sunnyside's population was 4,627.

The Maltermoro post office operated from 1894 to 1913. The name honored postmaster George H. Malter.