South Hill is a census-designated place (CDP) in Pierce County, Washington, United States. The population was 64,708 at the 2020 census. Located immediately south of Puyallup, the area primarily consists of suburban housing and shopping with several retail shopping centers, residential neighborhoods, and apartment complexes throughout. Because South Hill is unincorporated, its addresses are part of the Puyallup "postal city" or ZCTA.

The area was first settled in the 1880s after a military road was built through the area in the 1850s. Several logging camps, farms, and hunting grounds sprouted up as the area was settled. It also was the main route to the towns of Kapowsin and Eatonville. Population growth was slow until after World War II, when roads improved and people could commute to nearby Tacoma, Fort Lewis, and Seattle.

Most commercial areas are located along the main thoroughfare, Meridian Avenue (State Route 161). Major neighborhoods include Manorwood, Sunrise (Sunrise Master Association), Lipoma Firs, Silvercreek, and Gem Heights. There are also a few popular public parks: Bradley Lake Park, South Hill Community Park/Nathan Chapman Memorial Trail and Wildwood Park.

Major events:

The community's name describes its location above the south side of the Puyallup River valley. This also contrasts with the nearby Edgewood and Milton areas, which are known informally as North Hill.

According to the United States Census Bureau, the CDP has a total area of 18.1 square miles (46.8 km²), of which, 18.0 square miles (46.6 km²) of it is land and 0.1 square miles (0.2 km²) of it (0.39%) is water.

As of the 2020 census, South Hill had a population of 64,708. The median age was 35.5 years. 26.7% of residents were under the age of 18 and 11.6% of residents were 65 years of age or older. For every 100 females there were 97.6 males, and for every 100 females age 18 and over there were 94.5 males age 18 and over.

99.9% of residents lived in urban areas, while 0.1% lived in rural areas.