| Business | Phone |
| Astoria Federal Savings & Loan 65 Nugent St, Southampton 11968 | (631) 283-0100 |
| Bank Of America 60 Jagger Ln, Southampton 11968 | (631) 000-1111 |
| Bridge Hampton National Bank 425 County Road 39, Southampton 11968 | (631) 283-1286 |
| Bridgehampton National Bank 94 Main St, Southampton 11968 | (631) 287-4136 |
| Chase 60 Main St, Southampton 11968 | (516) 935-9935 |
| North Fork Bank 46 Windmill Ln, Southampton 11968 | (631) 283-8300 |
| Greenshoe.Com 67 Hampton Rd, Southampton 11968 | (631) 287-9300 |
| Hamptons State Bank 243 Windmill Ln, Southampton 11968 | (631) 287-9500 |
| Suffolk County National Bank 295 N Sea Rd, Southampton 11968 | (631) 283-3800 |
| Washington Mutual 42 Hill St, Southampton 11968 | (631) 283-6270 |