Grand Mound is a community and census-designated place (CDP) in Thurston County, Washington, United States.

[9][11] In the 1920s, strawberries became a major crop in the area, and a processing plant was built, but during the Great Depression the industry failed and the Northern Pacific Railway closed the Grand Mound station.

[6] By 1941 the population of the area had grown to about 200 people and the community had a post office along with a store and a single gas station.

In November of 2000, voters approved a $750,000 facilities bond to build a new station on land donated to the district by Thurston County, and to purchase a new water tender.

[14] A new fire station was built to serve Grand Mound in 2007[15] with proceeds from a $3,500,000 facilities bond voters approved in May of 2006.

In March 2008, a 398-room Great Wolf Lodge opened in Grand Mound, which was majority owned by the Confederated Tribes of the Chehalis Reservation.

According to the United States Census Bureau, the CDP has a total area of 3.93 square miles (10.2 km2), all of it land.

Just north of Grand Mound is the Scatter Creek Unit, a 915-acre (370.29-hectare) wildlife reserve which contains one of the few remaining areas of south Puget Sound prairie.

A historical marker in the community commemorates a successful attempt by the townswomen of Grand Mound to vote in Washington territorial elections.

Just south of Grand Mound, on Old Highway 99, is an Oregon Trail marker, established in 1916 by the Daughters and Sons of the American Revolution.

A monument across from Grand Mound Cemetery marks the former location of Ft. Henness, a stockade built and occupied during the Puget Sound War of 1855-56.