| First Interstate Bank - 40 East Hart Street | Buffalo307-684-2581 | 307-684-2581 |
| First Interstate Bank - 1076 Cy Avenue | Casper307-235-4297 | 307-235-4297 |
| First Interstate Bank - 104 South Wolcott Street | Casper307-235-4201 | 307-235-4201 |
| First Interstate Bank - 521 Southeast Wyoming Boulevard | Casper307-235-4384 | 307-235-4384 |
| First Interstate Bank - 4612 Rue Terre | Cheyenne307-633-8476 | 307-633-8476 |
| First Interstate Bank - 401 West 19th Street | Cheyenne307-633-8400 | 307-633-8400 |
| First Interstate Bank - 2201 South Douglas Highway | Gillette307-682-5144 | 307-682-5144 |
| First Interstate Bank - 222 Gillette Avenue | Gillette307-682-5144 | 307-682-5144 |
| First Interstate Bank - 105 Buffalo Way | Jackson307-732-0194 | 307-732-0194 |
| First Interstate Bank - 120 East Broadway Po Box 11095 | Jackson307-732-7883 | 307-732-7883 |
| First Interstate Bank - 842 West Broadway | Jackson307-734-7373 | 307-734-7373 |
| First Interstate Bank - 8118 Highway 79 | Lander307-332-7500 | 307-332-7500 |
| First Interstate Bank - Student Union Building Po Box 1307 | Laramie307-721-4600 | 307-721-4600 |
| First Interstate Bank - 221 Ivinson Street | Laramie307-721-4600 | 307-721-4600 |
| First Interstate Bank - 1771 Snowy Range Road | Laramie307-721-4600 | 307-721-4600 |
| First Interstate Bank - 300 Southwest Wyoming Boulevard | Mills307-235-4448 | 307-235-4448 |
| First Interstate Bank - 323 East Main Street | Riverton307-857-5335 | 307-857-5335 |
| First Interstate Bank - 4 South Main Street | Sheridan307-674-7411 | 307-674-7411 |
| First Interstate Bank - 1613 Coffeen Avenue | Sheridan307-672-1501 | 307-672-1501 |
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