Teams by City B C D E F G J K L M N O P Q R S T
| City | YMCA | Team | Code |
| Canton | Canton Family YMCA | Barracudas | CANY |
| Champaign | Champaign County YMCA | Heat | HEAT |
| Chicago | Irving Park | Penguins | IRVP |
| Clinton | Clinton Community YMCA | Otters | CLY |
| Crystal Lake | Sage YMCA | Piranhas | SAGE |
| City | YMCA | Team | Code |
| Danville | Danville Family YMCA | Dolphins | DANV |
| Decatur | Decatur Family YMCA | Gators | DECY |
| City | YMCA | Team | Code |
| Evanston | The McGaw YMCA | Myst | MYST |
| City | YMCA | Team | Code |
| Galesburg | Knox County YMCA | Krocodile | KNCY |
| Glen Ellyn | BR Ryall YMCA of Northwestern DuPage County | BR Ryall | BRRY |
| City | YMCA | Team | Code |
| Jacksonville | Bob Freesen YMCA | Jaxy Sharks | JAXY |
| Joliet | Greater Joliet Araa YMCA | Jets | JETS |
| City | YMCA | Team | Code |
| Kankakee | Kankakee Area YMCA | Stingrays | KKEE |
| Kewanee | The YMCA of Kewanee | Kraken | KEWE |
| City | YMCA | Team | Code |
| Lindenhurst | Hastings Lake YMCA | Stingrays | HLYS |
| City | YMCA | Team | Code |
| Macomb | YMCA of McDonough County | Dolphins | MCDN |
| Mattoon | Mattoon Area Family YMCA | Samy Seals | SAMY |
| Monmoth | Warren County YMCA | Waterbugs | WCY |
| City | YMCA | Team | Code |
| Oak Park | The West Cook YMCA | TOPS YMCA Swim Team | TOPS |
| Ottawa | Ottawa YMCA | Dolphins | OTTY |
| City | YMCA | Team | Code |
| Palatine | Buehler YMCA | Blue Marlins | PALA |
| Peoria | Greater Peoria Family YMCA | D.O.C.S. | DOCS |
| Peru | Illinois Valley YMCA | Dolphins | ILVY |
| Plano | Fox Valley Family YMCA | Aqua Force | FVFY |
| City | YMCA | Team | Code |
| Rockford | The YMCA of Rock River Valley | Stingrays | RAYS |
| City | YMCA | Team | Code |
| Springfield | Springfield YMCA | Typhoons | SPY |
| Sycamore | Kishwaukee Family YMCA | DeKalb County Swim Team | DCST |
| City | YMCA | Team | Code |
| Toledo | Neal Center YMCA | Heartland Hurricanes | HHST |
