First Financial Corporation operates as the bank holding company for First Financial Bank N.A. that provides various financial services for individuals and businesses in west-central Indiana, east-central Illinois, western Kentucky, central and eastern Tennessee, and northern Georgia in the United States. The company offers non-interest-bearing demand, interest-bearing demand, savings, time, and other time deposits; checking and savings accounts; personal and business certificates of deposit; and digital banking services. It also provides commercial loans primarily to expand a business or finance asset purchases; real estate mortgages, including residential real estate and residential real estate construction loans; home equity loans and lines, secured loans, cash/CD secured loans, and uns…