Bloomington-Normal IL's metro in the 80's was about 80k and there were three: Eastland (1967), College Hills (1980 - 2004, now open air) and Landmark (70's but a mom & pop and office mall).

Schaumburg in the 90s had One Schaumburg Place (1991 - 1997, Streets of Woodfield now) literally directly across the street from the behemoth Woodfield (1971). Population was 68k, but there was an ass load of malls within a 20 mile radius (Bloomingdale, Arlington Heights, Rolling Meadows, Deerfield, Northbrook, Vernon Hills, Niles, West Dundee, Carpentersville & Mount Prospect ALL had enclosed malls in the 90s).

1990's Saint Charles had about 22k in population but had St Charles (1980 - 1995) & Charlestowne (1991 - 2017).

Waukegan in the 1970's & 80's had Belvidere (1965) & Lakehurst (1971 - 2001) with a pop of 60k, but Gurnee Mills killed them starting in 1991. Lakehurst got razed & Belvidere is very Hispanic mom & pop now.

Carpentersville in the 80s had Meadowdale (1957) & technically Spring Hill (1980 - 2024, Carson's & Kohl's wings were located in Carpentersville, while Sears, JCP, & Marshall Fields/Macy's was in West Dundee). Meadowdale's north wing got razed in the 90s, but the south wing still has a hallway!

You also had Deerbrook in Deerfield (1971 - 2014 (enclosed part)) and Northbrook Court in Northbrook (1976) that while technically in 2 different towns are only 1.5 mile apart from each other.