Horizon League

The Horizon League is a NCAA conference that plays in the NCAA Division I. The conference is headquartered in Indianapolis, Indiana and features universities and colleges from the Great Lakes Region. While it plays many sports, it has never played football.
History.
The Horizon League was founded in 1979 as the Midwestern City Conference (MCC) with six members. None of these schools are in the league now. The school that has been in the league the longest is Detroit Mercy, which joined in 1980 (when it was known as simply "Detroit").
The conference changed its name in 1985 to Midwestern Collegiate Conference. In 1993, the largest conference expansion in NCAA history that did not involve a merger was announced. Six schools left the Mid-Continent Conference, now known as The Summit League, to join the Midwestern Collegiate Conference for the 1994–95 school year. In June 2001, the conference changed its name to the current Horizon League to avoid confusion with the "other" MCC (which did not become The Summit League until 2007).
Today, eight of the Horizon League's 11 full members (those playing most, if not all, of their sports in the league) are former members of The Summit League. The exceptions are Detroit Mercy, Northern Kentucky, and Robert Morris.
The most recent changes to the conference membership happened in the 2020s. First, in 2020, Purdue Fort Wayne and Robert Morris joined. In 2022, UIC left to join the Missouri Valley Conference.
Members.
The Horizon League now has 11 full members.
Former full members.
A total of 14 schools have been full members, but are no longer in the league.
Nicknames are those used when the schools were conference members.
Associate members.
NCAA conferences often have one or more "associate" members that play only a limited number of sports in the conference, usually one. For most of its history, the Horizon League has not had associate members. The first such member was Belmont, which was a men's soccer member from 2014 to 2018. More recently, the Horizon greatly expanded its men's tennis league. The Ohio Valley Conference (OVC) merged its men's tennis league into the Horizon in 2022. At the same time, Belmont returned to the conference for men's tennis, and Chicago State moved men's and women's tennis into the Horizon.
Former.
As noted above, current men's tennis member Belmont once housed its men's soccer team in the Horizon League.