- Rhestr yn nhrefn yr wyddor
Anfon llythyr at rywun yn Nassau County, Long Island, Efrog Newydd? Fel y gwyddoch, sefydlodd Gwasanaeth Post yr Unol Daleithiau godau ZIP Five-digit (Rhaglen Gwella Parthau) ym 1963 i hwyluso trefnu a dosbarthu post yn y wlad.
Dyma restr o'r codau ZIP yn y sir, a drefnir yn nhrefn yr wyddor fesul ardal:
Albertson (Tref Hempstead) - 11507
Traeth yr Iwerydd (Tref Hempstead) - 11509
Baldwin (Tref Hempstead) - 11510
Bayville (Tref Bae Oyster) - 11709
Bellmore (Tref Hempstead) = 11710
Bethpage (Tref Bae Oyster) - 11714
Carle Place (Tref Gogledd Hempstead) - 11514
Cedarhurst (Tref Hempstead) - 11516
East Meadow (Tref Hempstead) - 11554
East Norwich (Tref Bae Oyster) - 11732
East Rockaway (Tref Hempstead) - 11518
Elmont (Tref Hempstead) - 11003
Farmingdale (Tref Bae Oyster) - 11735, 11736, 11737, 11774
Parc Floral (Tref Hempstead) - 11001, 11002
Franklin Square (Tref Hempstead) - 11010
Freeport (Tref Hempstead) - 11520
Garden City ((Tref Hempstead a Thref Gogledd Hempstead) - 11530, 11531, 11535, 11536, 11599
Glen Cove (Dinas Glen Cove) - 11542
Glen Head (Tref Bae Oyster) - 11545
Glenwood Landing (Tref Bae Oyster) - 11547
Cist Fawr (Tref Gogledd Hempstead) - 11020, 11021, 11033, 11023, 11024, 11025, 11026, 11027
Greenvale (Tref Bae Oyster) - 11548
Hempstead (Tref Hempstead) - 11549, 11550, 11551
Hewlett (Tref Hempstead) - 11557
Hicksville (Tref Bae Oyster) - 11801, 11802, 11815, 11819, 11854, 11855
Inwood (Tref Hempstead) - 11096, 11696
Ynys Park (Tref Hempstead) - 11558
Jericho (Tref Bae Oyster) - 11753, 11853
Lawrence (Tref Hempstead) - 11559
Levittown (Tref Hempstead) - 11756
Dyffryn Locust (Tref Bae Oyster) - 11560
Long Beach (CIty o Long Beach) - 11561
Lynbrook (Tref Hempstead) - 11564, 11564
Malverne (Tref Hempstead) - 11565
Manhasset (Tref Gogledd Hempstead) - 11030
Massapequa (Tref Bae Oyster) - 11758
Massapequa Park (Tref Oyster Bay) - 11762
Merrick (Tref Hempstead) - 11566
Cwt y Felin (Tref Bae Oyster) - 11765
Mineola (Tref Hempstead) - 11501
New Hyde Park (Tref Hempstead a Thref Gogledd Hempstead) - 11040, 11041, 11042, 11043, 11044, 11099
Oceanside (Tref Hempstead) - 11572
Old Bethpage (Tref Bae Oyster) - 11804
Hen Westbury (Tref Hempstead a Thref Bae Oyster) - 11568
Bae Oyster (Tref Bae Oyster) - 11771
Plainview (Tref Bae Oyster) - 11803
Point Lookout (Tref Hempstead) - 11569
Port Washington (Tref Gogledd Hempstead) - 11050, 11051, 11052, 11053, 11054, 11055
Rockville Centre (Tref Hempstead) - 11570, 11571, 11582
Roosevelt (Tref Hempstead) - 11575
Roslyn (Tref Gogledd Hempstead) - 11576
Roslyn Heights (Tref Gogledd Hempstead) - 11577
Clogwyn Môr (Tref Bae Oyster) - 11579
Seaford (Tref Hempstead) - 11783
Syosset (Tref Bae Oyster) - 11773, 11791
Uniondale (Tref Hempstead) - 11553, 11555, 11556, 11588
Valley Stream (Tref Hempstead) - 11580, 11581, 11582, 11582
Wantagh (Tref Hempstead) - 11793
West Hempstead (Tref Hempstead) - 11552
Westbury (Tref Gogledd Hempstead) - 11590, 11593, 11594, 11595, 11597
Parc Williston (Tref Gogledd Hempstead) - 11596
Woodbury (Tref Bae Oyster) - 11797
Woodmere (Tref Hempstead) - 11598