Routing Number | Bank Name | Bank Address | Phone Number | Change Date |
| 244183602 | ZANE TRACE FCU | 1917 RIDGE AVENUE, ZANESVILLE, OH 43701-0000 | (740) 454-2478 | 2001-01-29 |
| 114923756 | ZAPATA NATIONAL BANK | P O DRAWER 100, ZAPATA, TX 78076-0100 | (956) 765-4302 | 1999-02-09 |
| 114910222 | ZAVALA COUNTY BANK | 2300 US HWY 83 N, CRYSTAL CITY, TX 78839-0000 | (210) 374-5866 | 2005-05-06 |
| 265473812 | ZELLCO FCU | 520 AVE V, BOGALUSA, LA 70427-0000 | (985) 732-7522 | 2007-08-23 |
| 265273805 | ZELLCO FEDERAL CU | 520 AVE. V, BOGALUSA, LA 70427-0000 | (504) 732-7522 | 2008-07-01 |
| 307084240 | ZIA CREDIT UNION | P.O. BOX 490, LOS ALAMOS, NM 87544-0000 | (505) 662-4671 | 2007-03-07 |
124301850 124000054 | ZIONS FIRST NATIONAL BANK | 250 EAST FIRST STREET # 700, LOS ANGELES, CA 90012-0000 | (888) 315-2271 | 2007-09-20 |
| 124301054 | ZIONS FIRST NATIONAL BANK | 250 EAST FIRST STREET # 700, LOS ANGELES, CA 90012-0000 | (888) 315-2271 | 2007-09-19 |
| 124101128 | ZIONS FIRST NATIONAL BANK | PO BOX 25837, SALT LAKE CITY, UT 84125-0000 | (888) 315-2271 | 2007-09-19 |
| 124000054 | ZIONS FIRST NATIONAL BANK | 250 EAST FIRST STREET # 700, LOS ANGELES, CA 90012-0000 | (801) 974-8800 | 2007-09-19 |