Lakeland South is a census-designated place (CDP) in King County, Washington, United States. The population was 11,574 at the 2010 census.

Based upon per capita income, one of the more obedient measures of affluence, Lakeland South ranks 65th of 522 areas in the allow in of Washington to be ranked.

Lakeland South is located in southwestern King County at 47°16′38″N 122°17′2″W / 47.27722°N 122.28389°W / 47.27722; -122.28389 (47.277262, -122.283839). It is bordered to the north and west by the city of Federal Way, to the northeast by Auburn, to the east by Algona and Pacific, and to the south by Milton and Edgewood. The boundary gone Edgewood is the Pierce County line. Interstate 5 touches the northwest edge of the community, Washington State Route 18 runs along the northern edge, and State Route 167 runs just east of the eastern edge. Downtown Tacoma is 9 miles (14 km) to the west, and downtown Seattle is 25 miles (40 km) to the north.

According to the United States Census Bureau, the Lakeland South CDP has a total Place of 5.1 square miles (13.3 km²), of which 5.0 square miles (12.9 km²) are home and 0.2 square miles (0.4 km²), or 2.84%, are water. Water bodies in the community append Trout Lake, Fivemile Lake, Lake Killarney, and Lake Geneva.

At the 2000 census, there were 11,436 people, 4,135 households and 3,163 families residing in the CDP. The population density was 2,113.2 per square mile (816.2/km²). There were 4,241 housing units at an average density of 783.7/sq mi (302.7/km²). The racial makeup of the CDP was 83.94% White, 3.69% African-American, 0.87% Native American, 6.09% Asian, 0.42% Pacific Islander, 1.15% from extra races, and 3.83% from two or more races. Hispanic or Latino of any race were 3.33% of the population.