Routing Number | Bank Name | Bank Address | Phone Number | Change Date |
| |
| | | |
| 075917924 | OAK BANK | PO BOX 259404, MADISON, WI 53725-9404 | (608) 441-6000 | 2003-02-14 |
| 111094235 | OAK CLIFF CHRISTIAN FCU | 1130 W CAMP WISDOM RD, DALLAS, TX 75232-0000 | (214) 672-9180 | 2009-06-09 |
| 104904099 | OAK CREEK VALLEY BANK | P.O. BOX 8, VALPARAISO, NE 68065-0008 | (402) 784-2200 | 2009-11-25 |
| 313083125 | OAK FARMS EMPLOYEES CREDIT UNION | 3430 LEELAND, HOUSTON, TX 77003-0000 | (713) 547-7188 | 2008-07-22 |
| 265473760 | OAK POINT EMPLOYEES CREDIT UNION | P.O. BOX 441, BELLE CHASE, LA 70037-0000 | (504) 391-6355 | 2000-12-01 |
| 264281380 | OAK RIDGE SCHOOLS FED. C/U | PO BOX 6588, OAK RIDGE, TN 37831-6588 | (423) 483-4229 | 2005-05-02 |
| 071001449 | OAK TRUST AND SAVINGS BANK | 1000 N RUSH ST, CHICAGO, IL 60611-0000 | (312) 440-4044 | 2010-01-21 |
| 271079747 | OAK TRUST CREDIT UNION | SUITE 700, NAPERVILLE, IL 60563-0000 | (630) 792-2922 | 2010-02-08 |
| 296076097 | OAK TRUST CREDIT UNION | P.O. BOX 5051, OAKBROOK TERRACE, IL 60181-5051 | (651) 686-0100 | 2007-09-04 |
| 121142119 | OAK VALLEY COMMUNITY BANK | PO BOX 98, OAKDALE, CA 95361-0098 | (209) 848-2265 | 2005-07-18 |