| Uninum | Name | Address 1 | Address 2 | City | County | Established | Accquired | | 11318 | 9443 SOUTH ASHLAND AVENUE BRANCH | 9443 S Ashland Ave | Chicago-Naperville-Elgin, IL-IN-WI 60620 | Chicago | Cook | 02/05/1954 | 04/20/2018 |
| 11854 | FRANKFORT BRANCH | 20201 S La Grange Rd | Chicago-Naperville-Elgin, IL-IN-WI 60423 | Frankfort | Will | 11/18/1958 | 02/09/2008 |
| 12401 | WEST SUBURBAN LIMITED SERVICE BRANCH | 701 Westmore Meyers Rd | Chicago-Naperville-Elgin, IL-IN-WI 60148 | Lombard | Dupage | 12/01/2021 | 12/01/2021 |
| 13903 | NORTH AURORA BRANCH | 200 John St | Chicago-Naperville-Elgin, IL-IN-WI 60542 | North Aurora | Kane | 08/13/1970 | 01/01/1999 |
| 14398 | FINLEY ROAD BRANCH | 2800 Finley Rd | Chicago-Naperville-Elgin, IL-IN-WI 60515 | Downers Grove | Dupage | 10/27/1972 | 12/01/2021 |
| 14598 | CASS AVENUE BRANCH | 8001 Cass Ave | Chicago-Naperville-Elgin, IL-IN-WI 60561 | Darien | Dupage | 06/18/1973 | 12/01/2021 |
| 15387 | STRATFORD SQUARE BRANCH | 355 W Army Trail Rd | Chicago-Naperville-Elgin, IL-IN-WI 60108 | Bloomingdale | Dupage | 10/24/1975 | 12/01/2021 |
| 15620 | FARNSWORTH BRANCH | 1350 N Farnsworth Ave | Chicago-Naperville-Elgin, IL-IN-WI 60505 | Aurora | Kane | 02/21/1977 | 01/01/1999 |
| 201443 | OLD SECOND BATAVIA BRANCH | 1991 W Wilson St | Chicago-Naperville-Elgin, IL-IN-WI 60510 | Batavia | Kane | 12/22/1986 | 12/31/1999 |
| 201446 | OSWEGO BRANCH | 1200 Douglas Rd | Chicago-Naperville-Elgin, IL-IN-WI 60543 | Oswego | Kendall | 04/14/1997 | 12/31/1999 |
| 201872 | COUNTRYSIDE BRANCH | 26 W Countryside Pkwy | Chicago-Naperville-Elgin, IL-IN-WI 60560 | Yorkville | Kendall | 09/15/1988 | 07/01/2007 |
| 208083 | WASCO BRANCH | 40w 422 Il-64 | Chicago-Naperville-Elgin, IL-IN-WI 60183 | Wasco | Kane | 09/16/1991 | 07/01/2007 |
| 225468 | BENSENVILLE BRANCH | 2 S York Rd | Chicago-Naperville-Elgin, IL-IN-WI 60106 | Bensenville | Dupage | 03/15/1989 | 04/20/2018 |
| 2293 | Old Second National Bank | 37 S River St | Chicago-Naperville-Elgin, IL-IN-WI 60506 | Aurora | Kane | 11/21/1887 | |
| 245531 | GLENDALE HEIGHTS BRANCH | 1657 Bloomingdale Rd | Chicago-Naperville-Elgin, IL-IN-WI 60139 | Glendale Heights | Dupage | 12/01/1984 | 12/01/2021 |
| 245532 | FINANCIAL CENTER | 717 S Meyers Rd | Chicago-Naperville-Elgin, IL-IN-WI 60148 | Lombard | Dupage | 06/01/1983 | 12/01/2021 |
| 245534 | OAK BROOK TERRACE BRANCH | 17w754 22nd St | Chicago-Naperville-Elgin, IL-IN-WI 60181 | Oak Brook Terrace | Dupage | 10/12/1987 | 12/01/2021 |
| 245535 | NORTH MAIN BRANCH | 707 N Main St | Chicago-Naperville-Elgin, IL-IN-WI 60148 | Lombard | Dupage | 04/15/1988 | 12/01/2021 |
| 245540 | BOLINGBROOK WEST BRANCH | 1104 W Boughton Rd | Chicago-Naperville-Elgin, IL-IN-WI 60440 | Bolingbrook | Will | 04/03/1995 | 12/01/2021 |
| 245541 | DANADA BRANCH | 295 W Loop Rd | Chicago-Naperville-Elgin, IL-IN-WI 60189 | Wheaton | Dupage | 05/02/1995 | 12/01/2021 |
| 245543 | NAPERVILLE BRANCH | 2020 Feldott Ln | Chicago-Naperville-Elgin, IL-IN-WI 60540 | Naperville | Dupage | 06/08/1996 | 12/01/2021 |
| 245545 | EOLA ROAD BRANCH | 335 N Eola Rd | Chicago-Naperville-Elgin, IL-IN-WI 60504 | Aurora | Dupage | 02/01/1999 | 12/01/2021 |
| 245546 | VILLA PARK BRANCH | 40 E Saint Charles Rd | Chicago-Naperville-Elgin, IL-IN-WI 60181 | Villa Park | Dupage | 09/08/1999 | 12/01/2021 |
| 245547 | ROMEOVILLE BRANCH | 505 N Weber Rd | Chicago-Naperville-Elgin, IL-IN-WI 60446 | Romeoville | Will | 01/07/2000 | 12/01/2021 |
| 251792 | SOUTH MAIN BRANCH | 1122 S Main St | Chicago-Naperville-Elgin, IL-IN-WI 60148 | Lombard | Dupage | 06/27/1981 | 12/01/2021 |
| 251795 | WARRENVILLE BRANCH | Il-59 | Chicago-Naperville-Elgin, IL-IN-WI 60555 | Warrenville | Dupage | 01/30/1989 | 12/01/2021 |
| 252262 | BOLINGBROOK EAST BRANCH | 672 E Boughton Rd | Chicago-Naperville-Elgin, IL-IN-WI 60440 | Bolingbrook | Will | 07/30/1991 | 12/01/2021 |
| 252263 | WEST GALENA BRANCH | 2000 W Galena Blvd | Chicago-Naperville-Elgin, IL-IN-WI 60506 | Aurora | Kane | 02/25/1992 | 12/01/2021 |
| 253177 | OTTAWA BRANCH | 323 E Norris Dr | Ottawa, IL 61350 | Ottawa | Lasalle | 02/01/1978 | 07/01/2007 |
| 254145 | GARY AVENUE BRANCH | 401 N Gary Ave | Chicago-Naperville-Elgin, IL-IN-WI 60188 | Carol Stream | Dupage | 12/12/1980 | 12/01/2021 |
| 254147 | BARTLETT BRANCH | 1061 W Stearns Rd | Chicago-Naperville-Elgin, IL-IN-WI 60103 | Bartlett | Dupage | 10/27/1986 | 12/01/2021 |
| 254148 | FAIR OAKS BRANCH | 1380 W Army Trail Rd | Chicago-Naperville-Elgin, IL-IN-WI 60188 | Carol Stream | Dupage | 07/13/1990 | 12/01/2021 |
| 254149 | ST. CHARLES BRANCH | 315 S Randall Rd | Chicago-Naperville-Elgin, IL-IN-WI 60174 | St. Charles | Kane | 11/06/1991 | 12/01/2021 |
| 264456 | HEGEWISCH BRANCH | 13323 S Baltimore Ave | Chicago-Naperville-Elgin, IL-IN-WI 60633 | Chicago | Cook | 01/01/1911 | 12/06/2024 |
| 264457 | SOUTH HOLLAND BRANCH | 601 E 162nd St | Chicago-Naperville-Elgin, IL-IN-WI 60473 | South Holland | Cook | 01/01/1911 | 12/06/2024 |
| 264458 | PALOS HEIGHTS BRANCH | 7101 W 127th St | Chicago-Naperville-Elgin, IL-IN-WI 60463 | Palos Heights | Cook | 01/01/1911 | 12/06/2024 |
| 273204 | MONTGOMERY BRANCH | 1830 Douglas Rd | Chicago-Naperville-Elgin, IL-IN-WI 60538 | Montgaomery | Kendall | 06/30/1989 | 12/01/2021 |
| 273205 | WEST GALENA FACILITY | 2000 W Galena Blvd | Chicago-Naperville-Elgin, IL-IN-WI 60506 | Aurora | Kane | 06/30/1989 | 12/01/2021 |
| 291950 | CHARLESTOWNE BRANCH | 3000 E Main St | Chicago-Naperville-Elgin, IL-IN-WI 60174 | St Charles | Kane | 04/04/2000 | 12/01/2021 |
| 364473 | ORCHARD BRANCH | 1230 N Orchard Rd | Chicago-Naperville-Elgin, IL-IN-WI 60506 | Aurora | Kane | 01/01/2002 | 12/31/1999 |
| 364969 | SOUTH ELGIN BRANCH | 1870 Stearns Rd | Chicago-Naperville-Elgin, IL-IN-WI 60177 | South Elgin | Kane | 12/31/2001 | 12/01/2021 |
| 3912 | ELBURN BRANCH | 749 N Main St | Chicago-Naperville-Elgin, IL-IN-WI 60119 | Elburn | Kane | 01/01/1890 | 07/01/2007 |
| 40822 | FLOSSMOOR BRANCH | 3301 Vollmer Rd | Chicago-Naperville-Elgin, IL-IN-WI 60422 | Flossmoor | Cook | 01/01/1911 | 12/06/2024 |
| 419578 | SYCAMORE BRANCH | 1810 Dekalb Ave | Chicago-Naperville-Elgin, IL-IN-WI 60178 | Sycamore | Dekalb | 05/28/2003 | 07/01/2007 |
| 432833 | DARIEN BRANCH | 8301 Cass Ave | Chicago-Naperville-Elgin, IL-IN-WI 60561 | Darien | Dupage | 09/30/2004 | 12/06/2024 |
| 439911 | TAYLOR STREET BRANCH | 1301 W Taylor St | Chicago-Naperville-Elgin, IL-IN-WI 60607 | Chicago | Cook | 04/04/2005 | 04/20/2018 |
| 445554 | CHICAGO HEIGHTS BRANCH | 195 W Joe Orr Rd | Chicago-Naperville-Elgin, IL-IN-WI 60411 | Chicago Heights | Cook | 06/30/2005 | 02/09/2008 |
| 457912 | PLANO WEST BRANCH | 7050 Burroughs Ave | Chicago-Naperville-Elgin, IL-IN-WI 60545 | Plano | Kendall | 12/04/2006 | 07/01/2007 |
| 457973 | ELGIN-ROUTE 20 BRANCH | 3290 Us Highway 20 And Nesler Road | Chicago-Naperville-Elgin, IL-IN-WI 60123 | Elgin | Kane | 11/06/2006 | 12/31/1999 |
| 492780 | JOLIET BRANCH | 850 Essington Rd | Chicago-Naperville-Elgin, IL-IN-WI 60435 | Joliet | Will | 08/31/2008 | 12/31/1999 |
| 526237 | SUGAR GROVE BRANCH | 522 N Sugar Grove Pkwy | Chicago-Naperville-Elgin, IL-IN-WI 60554 | Sugar Grove | Kane | 10/17/2011 | 12/01/2021 |
| 591740 | DOWNTOWN CHICAGO BRANCH | 333 W Wacker Dr | Chicago-Naperville-Elgin, IL-IN-WI 60606 | Chicago | Cook | 10/28/2016 | 12/31/1999 |
| 5921 | BURLINGTON BRANCH | 194 S Main St | Chicago-Naperville-Elgin, IL-IN-WI 60109 | Burlington | Kane | 09/10/1919 | 07/01/2007 |
| 611941 | METRA MAIN WSB XPRESS BRANCH | 100 S Main St | Chicago-Naperville-Elgin, IL-IN-WI 60148 | Lombard | Dupage | 03/02/2019 | 12/01/2021 |
| 648505 | WESTMORE BRANCH | 711 S Meyers Rd | Chicago-Naperville-Elgin, IL-IN-WI 60148 | Lombard | Dupage | 12/01/2021 | 12/31/1999 |
| 7476 | 6400 WEST NORTH AVE BR | 6400 W North Ave | Chicago-Naperville-Elgin, IL-IN-WI 60707 | Chicago | Cook | 06/10/1891 | 04/20/2018 |
