Tools
Routing Number
The routing number for First Financial Bank is 282970110. See where you can find it on your checks.
Learn MoreFinancial Calculators
Plug in your numbers and use our handy online calculators to do your budgeting.
Learn MoreWe are working on transitioning to our new system. Online and Mobile Banking will be unavailable over the weekend of September 18 - 22, 2025.
Activate and begin using your new debit card on Monday, September 22, 2025. Your old Visa debit card will no longer work after Monday, September 22, 2025.
Support Center: (888) 883-5814
The routing number for First Financial Bank is 282970110. See where you can find it on your checks.
Learn MorePlug in your numbers and use our handy online calculators to do your budgeting.
Learn More