First Financial Bankshares Inc is a financial and bank holding company. The company operates one line of business (community banking) located in a single geographic area (Texas). The company conducts a full-service commercial banking business through its subsidiaries. The loan portfolio segments of the company include Commercial and Industrial, Municipal, Agricultural, Construction and Development, Farm, Non-Owner Occupied and Owner Occupied Commercial Real Estate, Residential, Consumer Auto and Consumer Non-Auto. It derives maximum revenue from Construction and Development Segment.