Water Mill US Post Office

670 Montauk Highway
Water Mill, NY 11976
Phone: (631) 726-6310
Fax: (516) 496-4736
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Mt. Sinai US Post Office

457 Route 25a
Mt Sinai - 11766
(631) 928-0394

Westhampton Beach US Post Office

170 Main St
Westhampton Beach - 11978
(631) 288-4093

Central Islip US Post Office

101 Federal Plaza
Central Islip - 11722
(631) 715-0001

Greenvale US Post Office

37 Northern Blvd
Greenvale - 11548
(516) 621-7163

Atlantic Beach US Post Office

2009 Park St
Atlantic Beach - 11509
(516) 239-1178

Miller Placeace US Post Office

47 Echo Avenue
Miller Placeace - 11764
(631) 473-8134

Shirely US Post Office

800 Montauk Highway # 1
Shirley - 11967
(631) 281-0479

Patchogue US Post Office

170 E Main St
Patchogue - 11772
(631) 475-8623

Carle Place US Post Office

309 Westbury Avenue
Carle Placeace - 11514
(516) 333-3147

Great River US Post Office

62 River Road
Great River - 11739
(631) 581-7680