Blue Sky Bank was originally chartered in Osage County, Oklahoma in 1905 as the Bank of Commerce in Pawhuska. Over the next 110 plus years, it has grown and changed names several times, being known as the National Bank of Commerce, NBC Bank and, most recently, Citizens Bank of Oklahoma. Although the name has changed over time, Blue Sky Bank is and has always been Oklahoma owned.
While maintaining its roots in Pawhuska, the bank grew first to mid-town Tulsa in 2004 and then expanded into Cleveland, Oklahoma in 2014.
Recognizing its strong niche in commercial lending and community banking, and after gaining recognition for being a bank with infinite possibilities and creative solutions for its customers, Citizens Bank was renamed Blue Sky Bank on November 1, 2016.
In 2018, Blue Sky Bank purchased Bank of Cushing, now a branch of Blue Sky Bank, Pawhuska. This acquisition added two branches to the Blue Sky Bank family.