Member institutions are located in Iowa, Nebraska, and South Dakota.

All former members of the NIAC remain affiliated with the GPAC except for Dana College, which closed in 2010, the University of Sioux Falls, which left the conference in 2011, and Nebraska Wesleyan University, which left the conference in 2016.

Corey Westra in Sioux City, Iowa, is the current commissioner of the league.

[4] On January 17, 2023, Presentation will end its affiliate status with the GPAC as it announced that it will close, effective that spring.

[5] On September 18, 2023, the GPAC had extended an invitation to Waldorf University as their newest full member of the conference, effective beginning the 2024–25 academic year; although at that moment, the university was already an affiliate member in both men's and women's soccer.