County Bank
| Status: | Inactive as of 07/28/2000 |
| Merger - Without Assistance | |
| Successor Bank: | National Bank of Arizona |
| Headquarters: | County Bank 102 West Gurley Street Prescott, AZ 86301 |
| Established: | 10/11/1983 |
| FDIC Insurance: | 10/11/1983 |
| FDIC Cert: | #24728 |
| Charter Class: | Commercial bank, state charter and Fed nonmember, supervised by the FDIC |
| Total Assets: | $246,530,000 |
| Total Deposits: | $223,407,000 |
History
| 1983-10-11 | Institution established: Original name:Desert Sun State Bank | |
| 1987-03-16 | Changed name to Desert Sun Bank | |
| 1987-07-13 | Moved bank headquarters from PARKER, AZ to YUMA, AZ | |
| 1993-08-30 | Changed name to County Bank | |
| 1993-08-30 | Moved bank headquarters from YUMA, AZ to PRESCOTT, AZ | |
| 1993-08-30 | Reorganized. | |
| 2000-07-28 | Merged into and subsequently operated as part of National Bank of Arizona (20626) in TUCSON, AZ | |
| 2002-11-25 | Acquired Frontier State Bank (24227) in SHOW LOW, AZ | |
| 2007-01-18 | Acquired The Stockmen's Bank (23182) in KINGMAN, AZ | |
| 2015-12-31 | Acquired Nevada State Bank (18113) in LAS VEGAS, NV | |
| 2015-12-31 | Acquired Amegy Bank National Association (24107) in HOUSTON, TX | |
| 2015-12-31 | Acquired California Bank & Trust (20852) in SAN DIEGO, CA | |
| 2015-12-31 | Acquired Zions Trust, Natioanl Association (57638) in SALT LAKE CITY, UT | |
| 2015-12-31 | Acquired The Commerce Bank of Washington, National Association (27298) in SEATTLE, WA | |
| 2015-12-31 | Acquired Vectra Bank Colorado, National Association (2993) in FARMINGTON, NM | |
| 2015-12-31 | Acquired National Bank of Arizona (20626) in TUCSON, AZ | |
| 2015-12-31 | Merged into and subsequently operated as part of Zions First National Bank (2270) in SALT LAKE CITY, UT | |
| 2016-01-01 | Changed name to ZB, National Association (2270) | |
| 2018-09-30 | Changed name to Zions Bancorporation, N.A. (2270) |