Princeton National Bancorp, Inc. is a holding company primarily focused on commercial banking and financial services in north central Illinois. Through its subsidiary, Citizens First National Bank, the company offers a full range of banking and trust services to customers in the region.

Since its incorporation, Princeton National Bancorp has pursued a growth strategy through acquisitions, completing six acquisitions and subsequently merging them into Citizens First National Bank. The company's expansion efforts have strengthened its presence and service offerings in the local market, positioning it as a significant player in the regional banking sector.