ZIP codes by state

ZIP Codes by State

Texas has the most residential ZIP codes (1,990), then Pennsylvania (1,833) and New York (1,826); District of Columbia has the fewest (57). Across all 50 states, D.C. and Puerto Rico there are 33,774 residential ZIP codes.

Census2020
GeoNames2026

Every state

Residential ZIP codes (Census 2020 ZCTAs) and PO Box or single-organization ZIP codes (GeoNames) per state
State	Residential ZIPs	PO Box and unique	Counties	First digits
Alabama	656	155	67	350–352, 354–369
Alaska	245	28	30	995–999
Arizona	417	113	15	12 prefixes
Arkansas	615	91	75	716–729
California	1,802	791	58	900–908, 910–928, 930–961
Colorado	527	118	64	800–816
Connecticut	288	141	8	060–069
Delaware	68	28	3	197–199
District of Columbia	57	220	1	200, 202–205, 569
Florida	1,013	460	67	26 prefixes
Georgia	751	201	159	300–319, 398–399
Hawaii	97	40	5	967–968
Idaho	279	41	44	832–838
Illinois	1,396	179	102	600–620, 622–629
Indiana	807	161	92	460–479
Iowa	970	85	99	500–516, 520–528
Kansas	704	44	105	660–662, 664–679
Kentucky	780	166	120	400–418, 420–427
Louisiana	539	180	64	700–701, 703–708, 710–714
Maine	426	59	16	039–049
Maryland	477	128	24	205–212, 214–219
Massachusetts	539	146	14	010–027, 055
Michigan	992	167	83	480–499
Minnesota	881	111	87	550–551, 553–567
Mississippi	427	104	82	386–397
Missouri	1,035	122	115	27 prefixes
Montana	369	35	56	590–599
Nebraska	586	34	93	680–681, 683–693
Nevada	181	73	17	889–891, 893–895, 897–898
New Hampshire	247	34	10	030–038
New Jersey	598	125	21	070–089
New Mexico	371	56	33	870–871, 873–884
New York	1,826	328	62	005, 063, 100–149
North Carolina	853	228	100	270–289
North Dakota	388	19	53	580–588
Ohio	1,233	183	88	430–459
Oklahoma	664	101	77	730–731, 734–741, 743–749
Oregon	428	53	36	970–979
Pennsylvania	1,833	343	67	150–196
Puerto Rico	132	45	78	006–007, 009
Rhode Island	81	9	5	028–029
South Carolina	424	110	46	290–299
South Dakota	375	10	67	570–577
Tennessee	636	149	95	370–385
Texas	1,990	610	254	52 prefixes
Utah	298	49	29	840–847
Vermont	265	43	14	050–054, 056–059
Virginia	903	311	133	201, 205, 220–246
Washington	605	111	39	980–986, 988–994
West Virginia	738	113	55	247–268
Wisconsin	783	113	72	530–532, 534–535, 537–549
Wyoming	179	16	23	820–831, 834

Source: U.S. Census Bureau, 2020 ZCTAs and the ZCTA-county relationship file; GeoNames postal codes (CC BY 4.0).