* California Community Colleges (CCC): This is generally considered the largest community college system in the US by most measures, encompassing a massive number of students, campuses, and geographic coverage.
* Maricopa County Community College District (MCCCD): Located in Arizona, this system is consistently ranked among the largest in terms of student enrollment.
* City Colleges of Chicago (CCC): This system serves a large urban population and is frequently listed as one of the largest.
* Dallas County Community College District (DCCCD): Serving the Dallas area, this system is another significant player in terms of student enrollment and campus count.
* Los Angeles Community College District (LACCD): While part of the larger California system, LACCD itself is a substantial entity with a high student population and numerous campuses.
It's important to note that rankings can fluctuate slightly from year to year depending on enrollment numbers and other factors. To find the most up-to-date information, checking the websites of the individual systems and reviewing recent educational statistics reports would be beneficial.