| 1903 | The Bank of Zebulon opens as a branch of the Barnesville Banking Company. |
| 1905 | The Bank of Zebulon is chartered as a commercial bank by the State of Georgia. |
| 1935 | The Bank of Zebulon is admitted to membership in the newly created Federal Deposit Insurance Corporation as the 172nd member of the FDIC. |
| 1972 | The Bank of Zebulon and its owners and management work with citizens of Lamar County to establish Lamar State Bank in Barnesville, Georgia. |
| 1981 | Lamar State Bank and The Bank of Zebulon join together to create United Bank Corporation as their holding company. |
| 1983 | United Bank Corporation begins internal data processing for its subsidiary banks. |
| 1986 | Lamar State Bank and The Bank of Zebulon change their names to United Bank. |
| 1987 | United Bank establishes its own mortgage division to offer permanent, long term home loans. |
| 1990 | United Bank Corporation purchases First Federal Savings and Loan Association of Griffin and creates United Bank in Griffin, Georgia. |
| 1994 | United Bank opens its first grocery store branch, providing extended hours service Monday through Saturday. |
| 1996 | United Bank builds a call center and offers full customer service support from 7:00 a.m. through 11:00 p.m. Monday through Saturday. |
| 1997 | United Bank establishes an Investment division to provide investment advice and convenience for its customers. |
| 1998 | United Bank acquires and converts the Thomaston office of NationsBank,
N.A. into United Bank's Thomaston division. |
| 1998 | United Bank offers home banking, Internet banking and Internet connection services to its customers. |
| 1998 | United Bank offers deep discount Internet securities trading to its customers. |
| 2001 |
Centralized Human Resources Department located in
Zebulon. |
| 2002 |
United Bank opens office in Thomaston Wal-mart.
Training program implemented with Training Coordinator. Checking account
applications accepted online. |
| 2004 |
United Bank opens a new division and it's
thirteenth office in Madison, Georgia. |
| 2007 |
United Bank opens a new division and it's
fourteenth office in Covington, Georgia. |
| 2007 |
United Bank opens a new office in Covington
Wal-mart. |
| 2008 |
United Bank acquires and converts offices of First
Georgia Community Bank into United Bank's Jackson Division, Covington 278
Office and Locust Grove Ingles Office. |