Holbrook US Post Office

445 Furrows Road
Holbrook, NY 11741
Phone: (631) 588-0226
Fax: (516) 487-2508
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Bayport US Post Office

850 Montauk Highway
Bayport - 11705
(631) 472-7396

Brentwood US Post Office

25 2nd Avenue
Brentwood - 11717
(631) 273-0947

Malverne US Post Office

339 Hempstead Avenue
Malverne - 11565
(516) 599-7583

Merrick US Post Office

2040 Merrick Road
Merrick - 11566
(516) 378-7087

Sag Harbor US Post Office

21 Long Island Avenue
Sag Harbor - 11963
(631) 725-8968

St. James US Post Office

325 Lake Avenue
St James - 11780
(631) 584-4138

Valley Stream US Post Office

111 S Franklin Avenue
Valley Stream - 11580
(516) 825-8739

West Babylon US Post Office

385 Route 109
West Babylon - 11704
(631) 893-0560

West Sayville US Post Office

12 Washington Avenue
West Sayville - 11796
(631) 589-6958

Williston Park US Post Office

446 Willis Avenue
Williston Park - 11596
(516) 746-3247