Riverhead US Post Office

1210 W Main St
Riverhead, NY 11901
Phone: (631) 727-1019
Fax: (516) 845-7406
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Community Offices / Post Offices

Post Offices

Bayville US Post Office

251 Bayville Avenue
Bayville - 11709
(516) 628-9235
Post Offices

Commack US Post Office

150 Veterans Memorial Highway
Commack - 11725
(631) 543-3647
Post Offices

Elmont US Post Office

778 Elmont Road
Elmont - 11003
(516) 285-4078
Post Offices

Floral Park US Post Office

35 Tulip Avenue
Floral Park - 11001
(516) 616-5184
Post Offices

Franklin Square US Post Office

867 Hempstead Turnpike
Franklin Square - 11010
(516) 437-6647
Post Offices

Hicksville US Post Office

185 W John St
Hicksville - 11801
(516) 933-2300
Post Offices

Mastic US Post Office

1450 Montauk Highway
Mastic - 11950
(631) 281-0275
Post Offices

Montauk US Post Office

73 S Euclid Avenue
Montauk - 11954
(631) 668-7043
Post Offices

Syosset US Post Office

40 Queens St
Syosset - 11791
(516) 921-0746
Post Offices

US Post Office Processing Center

160 Duryea Road
Melville - 11747
(631) 755-2575
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