Founded in 1908 as First State Bank in Happy, Texas, the bank operated solely in that community for its first 81 years. In 1990, a group of investors formed Happy Bancshares, Inc., and purchased the bank. The generically named First State Bank changed its name to HAPPY STATE BANK in 2002.

In 2015, Happy State Bank (HSB) purchased the building at its current location, converting a portion of the third floor for commercial lending and market operations. Building on this foundation, HSB’s first retail branch bank in the metroplex opened in March 2017, on the ground floor of the building.

The branch's design draws inspiration from early rural West Texas banks, featuring rich white oak trim, furniture, and carved elements that support a full complement of retail banking features. Patriotic Texas-themed artwork graces the lobby and bank walls, further enhancing the welcoming atmosphere established since the branch’s opening.

This commitment to tradition and community continued in 2022, whenHappy State Bank became a division of Centennial Bank.