In 2022, AFC Walcountians turns 25 years old.

Formed in 1997 as Epsom Dynamos, the club later became fully incorporated as part of Walcountians Sports Club and officially became known as AFC Walcountians.

Walcountians Sports Club was formed by former pupils of Wallington County Grammar School, and is host to four other sections alongside AFC Walcountians, being Old Walcountians Rugby Club, Purley Walcountians Hockey Club, Walcountians Blues Lacrosse Club and Chipstead, Coulsdon & Walcountians Cricket Club.