The 2020–21 Stumptown AC season was the club's second in the National Independent Soccer Association (NISA), second overall, and first under this name and management.
[3] Prior to the season, the league announced both Stumptown Athletic and San Diego 1904 FC would go on hiatus for the fall.
[5] American soccer executive Fred Matthes and Carrie Taylor were named team president and head of operations, respectively.
[9] The Spring Season schedule was announced on March 18 with each association member playing eight games, four home and four away, in a single round-robin format.
[13] On March 29, U.S. Soccer announced 2020 Fall Champion Detroit City FC as NISA's representative in the tournament.