| IRSE Credit Union | Illinois |
| Irving City Employees Federal Credit Union | Texas |
| Irvin Works Federal Credit Union | Pennsylvania |
| Isabella Bank | Michigan |
| Isabella Community Credit Union | Michigan |
| Islanders Bank | Washington |
| Island Federal Credit Union | New York |
| Israel Discount Bank of New York | New York |
| Israel Memorial AME Federal Credit Union | New Jersey |
| Israel Methcomm Federal Credit Union | Illinois |
| Issaquena County Federal Credit Union | Mississippi |
| Italo-American Federal Credit Union | New York |
| Itasca Bank & Trust Co. | Illinois |
| iTrust Federal Credit Union | Tennessee |
| ITS Bank | Iowa |
| ITT Roanoke Federal Credit Union | Virginia |
| I U 7 Federal Credit Union | Pennsylvania |
| IUPAT DC 21 Federal Credit Union | Pennsylvania |
| Ixonia Bank | Wisconsin |