Mountain Park is an unincorporated community and census-designated place (CDP) in Gwinnett County, Georgia, United States.

[2] The older name for the area is Trickum, which is reflected in Five Forks-Trickum Road which bisects the community.

Mountain Park first appeared as a census designated place in the 1980 U.S.

[12] As of the 2020 United States census, there were 13,089 people, 4,516 households, and 3,559 families residing in the CDP.

Gwinnett County Public Library operates the Mountain Park Branch.