First State Bank was established by a group of Monticello businessmen in The company's Our Locations. First State Bank operates several convenient locations throughout Central and East Central Illinois. Monticello, IL. © First. Get reviews, hours, directions, coupons and more for Central Illinois Bank. Search for other Commercial & Savings Banks on The Real Yellow Pages®. Learn about Central Illinois Bank's Monticello office (Champaign, IL area). Search jobs. See reviews, salaries & interviews from Central Illinois Bank employees.