National Banks in Iowa
Below is every national bank with at least one Federal Reserve FedACH-registered office in Iowa. Click any routing number to see the full institutional record.
| Routing # | Institution | City | Phone |
|---|---|---|---|
| 0739-0613-1 | American Bank N.A. | Le Mars | (712) 546-2345 |
| 0739-0044-1 | Clinton National Bank | Clinton | (563) 243-1243 |
| 0739-0160-2 | First Citizens National Bank | Mason City | (641) 423-1600 |
| 0912-1217-9 | First National Bank | Atlantic | (712) 243-2244 |
| 0739-0227-4 | First National Bank Ames | Ames | (515) 232-5561 |
| 0739-0187-7 | First National Bank In Fairfield | Fairfield | (641) 472-4121 |
| 0739-0075-5 | First National Bank Of Muscatine | Muscatine | (563) 262-4227 |
| 0739-2286-9 | Liberty National Bank | Sioux City | (712) 224-4425 |
| 1049-2298-7 | Midstates Bank, N.A. | Harlan | (712) 755-7738 |
| 0739-0587-3 | Security National Bank | Sioux City | (712) 277-6633 |
| 0739-0008-5 | The Security National Bank | Sioux City | (712) 277-6699 |
| 0739-2284-3 | United Bank & Trust N.A. | Marshalltown | (641) 753-5900 |
National Banks across Iowa
National banks operate under a federal charter from the Office of the Comptroller of the Currency (OCC), allowing them to do business in every US state under a single regulatory framework. Their names typically end with "N.A." (National Association). Examples include JPMorgan Chase Bank, Bank of America, Wells Fargo, U.S. Bank, and Citibank. In Iowa, this category is represented by 12 distinct registered offices in the FedACH directory. The list above shows the primary routing number for each, the city of the registered office, and the contact phone number on file with the Federal Reserve.
If you maintain an account with one of the institutions listed, the routing number shown is the one you would use for direct deposit, ACH bill-pay, and external account linkage. For domestic Fedwire transfers, contact the institution directly to confirm whether a separate wire-routing number applies — many smaller institutions in this category route wires through a correspondent bank rather than directly through Fedwire.