| Business | Phone |
| Long Island Commercial Bank 3425 Veterans Memorial Hwy, Ronkonkoma 11779 | (631) 981-0888 |
| Bank Of New York 130 Portion Rd, Ronkonkoma 11779 | (631) 585-6000 |
| Chase 4155 Veterans Memorial Hwy # 1, Ronkonkoma 11779 | (631) 981-7020 |
| Chase 601 Portion Rd, Ronkonkoma 11779 | (516) 935-9935 |
| Citibank 4175 Veterans Memorial Hwy, Ronkonkoma 11779 | (631) 585-1472 |
| Washington Mutual 129 Ronkonkoma Ave, Ronkonkoma 11779 | (631) 738-1306 |