Routing Number | Bank Name | Bank Address | Phone Number | Change Date |
| 081505702 | O BANNON BANKING CO | 119 S. MAPLE ST, BUFFALO, MO 65622-0000 | (417) 345-2251 | 2005-08-25 |
| 325180977 | O BEE CREDIT UNION | 3900 CLEVELAND AVE SE, TUMWATER, WA 98501-4023 | (360) 943-0740 | 2004-05-21 |
| 243485767 | O C P S FCU | 280 FULTON STREET, WHEELING, WV 26003-0000 | (304) 243-0499 | 1997-06-20 |
| 264278474 | O M C EMPL CU | 1186 LOWER RIVER ROAD, CHARLESTON, TN 37310-0248 | (423) 336-4331 | 2006-05-08 |
| 323276498 | O U R FEDERAL CREDIT UNION | 325 BLAIR BLVD, EUGENE, OR 97402-0000 | (541) 485-1188 | 1999-12-03 |
| 021983258 | O&R UTILITIES EMPLOYEES FCU | P O BOX 470, MONROE, NY 10950-0000 | (845) 783-5490 | 2007-10-03 |
| 222381879 | O.P.C.S. F.C.U. | S-4000 N. BUFFALO RD, ORCHARD PARK, NY 14127-9925 | (716) 662-1311 | 2005-08-19 |
| 323274270 | O.S.U. FEDERAL CREDIT UN | PO BOX 306, CORVALLIS, OR 97339-0000 | (541) 714-4000 | 2002-10-31 |
| 303085094 | O.U. FEDERAL CREDIT UNION | 2000 W LINDSEY, NORMAN, OK 73069-0000 | (405) 325-2211 | 2002-05-06 |
| 291479563 | OAHE FEDERAL CREDIT UNION | 124 S EUCLID AVE, PIERRE, SD 57501-0000 | (605) 224-6264 | 2008-02-22 |