Loading ZIP outlines…

About Maryland’s ZIP codes

Of Maryland’s ZIPs, 423 are standard ZIP codes for street delivery, while 141 serve PO Boxes only and 39 belong to a single organization such as a university, a hospital, a large company or a government office. On the map 477 ZIPs have outlines; the other 126 are drawn as dots, because they cover no area of their own, and they have no residents counted in the Census.

The ZIPs are spread over 24 counties and 431 postal city names. Montgomery County has the most, 77 (13% of the state’s), followed by Prince George's County with 63 and Baltimore County with 53. 2 counties have only 9 ZIPs each, the fewest.

The postal city with the most ZIP codes is Baltimore, with 40; it is also the most populous, with 606,269 people across its ZIPs. 51 of its postal cities are among the 2,000 most populous in the country, from Baltimore down to Brooklyn.

The most populous is 20906 in Silver Spring, with 71,641 residents, followed by 21234 in Parkville with 67,308. Half of the 473 ZIPs with residents have more than 5,029 people and half fewer. 19 ZIPs have 50,000 residents or more, while 118 have fewer than 1,000.

ZIP codes in Maryland

ZIP	City	Type	People
20906	Silver Spring	Standard	71,641
21234	Parkville	Standard	67,308
20878	Gaithersburg	Standard	65,990
21740	Hagerstown	Standard	65,619
20874	Germantown	Standard	62,908
21122	Pasadena	Standard	62,368
21117	Owings Mills	Standard	59,154
21222	Dundalk	Standard	59,062
20904	Silver Spring	Standard	59,051
21061	Glen Burnie	Standard	57,352

Show all 603 ZIP codes

ZIP	City	Type	People
21224	Baltimore	Standard	54,266
21215	Baltimore	Standard	54,198
20744	Fort Washington	Standard	52,747
20902	Silver Spring	Standard	52,533
20774	Upper Marlboro	Standard	51,984
20772	Upper Marlboro	Standard	51,395
20850	Rockville	Standard	51,045
20854	Potomac	Standard	50,698
21228	Catonsville	Standard	50,418
21206	Baltimore	Standard	49,470
20783	Hyattsville	Standard	48,946
21043	Ellicott City	Standard	48,775
20852	Rockville	Standard	48,347
21207	Gwynn Oak	Standard	46,595
21702	Frederick	Standard	46,412
21218	Baltimore	Standard	46,238
20910	Silver Spring	Standard	45,610
21921	Elkton	Standard	44,983
21220	Middle River	Standard	44,568
21044	Columbia	Standard	44,284
20706	Lanham	Standard	43,623
21229	Baltimore	Standard	43,464
21221	Essex	Standard	43,381
21042	Ellicott City	Standard	43,147
20785	Hyattsville	Standard	41,636
21502	Cumberland	Standard	41,153
21703	Frederick	Standard	41,138
20743	Capitol Heights	Standard	40,709
20747	District Heights	Standard	40,696
21236	Nottingham	Standard	40,555
21804	Salisbury	Standard	40,049
21784	Sykesville	Standard	40,028
20748	Temple Hills	Standard	39,689
21701	Frederick	Standard	39,629
21045	Columbia	Standard	39,321
21401	Annapolis	Standard	39,308
20817	Bethesda	Standard	38,908
21093	Lutherville Timonium	Standard	38,677
21157	Westminster	Standard	38,584
21014	Bel Air	Standard	38,395
21060	Glen Burnie	Standard	38,269
20735	Clinton	Standard	38,200
21244	Windsor Mill	Standard	38,015
20707	Laurel	Standard	37,702
20877	Gaithersburg	Standard	37,577
21144	Severn	Standard	37,295
20740	College Park	Standard	36,930
21230	Baltimore	Standard	36,660
20901	Silver Spring	Standard	36,537
21075	Elkridge	Standard	35,900
21227	Halethorpe	Standard	35,837
21113	Odenton	Standard	35,670
20886	Montgomery Village	Standard	35,649
20782	Hyattsville	Standard	35,356
20723	Laurel	Standard	35,353
21208	Pikesville	Standard	35,007
21136	Reisterstown	Standard	34,973
21225	Brooklyn	Standard	34,138
21742	Hagerstown	Standard	33,069
20784	Hyattsville	Standard	32,567
20603	Waldorf	Standard	32,485
21212	Baltimore	Standard	32,317
20745	Oxon Hill	Standard	32,024
20814	Bethesda	Standard	31,919
21009	Abingdon	Standard	31,835
20746	Suitland	Standard	31,635
21403	Annapolis	Standard	31,521
20815	Chevy Chase	Standard	31,517
21237	Rosedale	Standard	31,477
21801	Salisbury	Standard	31,183
21771	Mount Airy	Standard	30,697
20853	Rockville	Standard	30,611
21133	Randallstown	Standard	30,527
21217	Baltimore	Standard	30,448
21015	Bel Air	Standard	30,400
20721	Bowie	Standard	29,847
20705	Beltsville	Standard	29,456
20602	Waldorf	Standard	28,736
21209	Baltimore	Standard	28,659
20770	Greenbelt	Standard	28,612
21146	Severna Park	Standard	28,593
20871	Clarksburg	Standard	28,557
21213	Baltimore	Standard	28,217
20708	Laurel	Standard	27,832
20601	Waldorf	Standard	27,789
21216	Baltimore	Standard	27,729
20715	Bowie	Standard	27,127
21239	Baltimore	Standard	26,605
21114	Crofton	Standard	26,404
20879	Gaithersburg	Standard	26,176
21030	Cockeysville	Standard	26,156
20876	Germantown	Standard	26,034
20832	Olney	Standard	25,969
21001	Aberdeen	Standard	25,714
20720	Bowie	Standard	25,702
20912	Takoma Park	Standard	25,463
20653	Lexington Park	Standard	25,180
21040	Edgewood	Standard	25,138
20737	Riverdale	Standard	24,555
20659	Mechanicsville	Standard	24,427
20903	Silver Spring	Standard	24,103
21601	Easton	Standard	23,945
21811	Berlin	Standard	23,907
20716	Bowie	Standard	22,874
21012	Arnold	Standard	22,377
21076	Hanover	Standard	22,299
21202	Baltimore	Standard	22,247
21286	Towson	Standard	21,470
21037	Edgewater	Standard	21,453
21204	Towson	Standard	20,967
21158	Westminster	Standard	20,917
21223	Baltimore	Standard	20,438
20646	La Plata	Standard	20,411
21409	Annapolis	Standard	20,326
21078	Havre De Grace	Standard	20,321
20657	Lusby	Standard	20,042
20895	Kensington	Standard	19,753
21214	Baltimore	Standard	19,344
21704	Frederick	Standard	19,275
20724	Laurel	Standard	19,163
21050	Forest Hill	Standard	18,681
21901	North East	Standard	18,517
21201	Baltimore	Standard	18,382
21108	Millersville	Standard	18,065
21613	Cambridge	Standard	17,967
21211	Baltimore	Standard	17,721
20905	Silver Spring	Standard	17,700
21085	Joppa	Standard	17,142
21231	Baltimore	Standard	17,062
20816	Bethesda	Standard	17,035
20855	Derwood	Standard	17,003
20794	Jessup	Standard	16,658
21046	Columbia	Standard	16,023
20613	Brandywine	Standard	15,726
21774	New Market	Standard	15,496
20639	Huntingtown	Standard	15,344
20650	Leonardtown	Standard	15,298
21074	Hampstead	Standard	15,279
20866	Burtonsville	Standard	15,199
21128	Perry Hall	Standard	14,861
21205	Baltimore	Standard	14,691
21210	Baltimore	Standard	14,441
20851	Rockville	Standard	14,327
20619	California	Standard	14,179
21054	Gambrills	Standard	13,970
20882	Gaithersburg	Standard	13,890
20781	Hyattsville	Standard	13,662
21550	Oakland	Standard	13,499
20872	Damascus	Standard	13,349
21532	Frostburg	Standard	13,328
20695	White Plains	Standard	13,318
21029	Clarksville	Standard	12,919
21047	Fallston	Standard	12,876
21666	Stevensville	Standard	12,848
20678	Prince Frederick	Standard	12,818
20607	Accokeek	Standard	12,762
21620	Chestertown	Standard	12,726
21102	Manchester	Standard	12,100
21769	Middletown	Standard	11,759
21788	Thurmont	Standard	11,491
21911	Rising Sun	Standard	11,207
21842	Ocean City	Standard	11,104
21787	Taneytown	Standard	11,066
21048	Finksburg	Standard	10,774
21617	Centreville	Standard	10,719
20732	Chesapeake Beach	Standard	10,626
21090	Linthicum Heights	Standard	10,623
20636	Hollywood	Standard	10,615
21793	Walkersville	Standard	10,447
21853	Princess Anne	Standard	10,179
20640	Indian Head	Standard	9,949
21629	Denton	Standard	9,911
21795	Williamsport	Standard	9,873
20710	Bladensburg	Standard	9,850
21713	Boonsboro	Standard	9,800
20736	Owings	Standard	9,632
21219	Sparrows Point	Standard	9,594
20841	Boyds	Standard	9,538
20712	Mount Rainier	Standard	9,526
20755	Fort George G Meade	Standard	9,324
21783	Smithsburg	Standard	9,306
21032	Crownsville	Standard	9,180
21797	Woodbine	Standard	8,956
21035	Davidsonville	Standard	8,298
20833	Brookeville	Standard	7,913
21163	Woodstock	Standard	7,657
21084	Jarrettsville	Standard	7,600
21770	Monrovia	Standard	7,575
21131	Phoenix	Standard	7,468
21226	Curtis Bay	Standard	7,368
20616	Bryans Road	Standard	7,356
21875	Delmar	Standard	7,231
21851	Pocomoke City	Standard	7,229
20711	Lothian	Standard	7,193
21120	Parkton	Standard	7,178
21754	Ijamsville	Standard	7,115
20769	Glenn Dale	Standard	7,009
20634	Great Mills	Standard	6,984
20754	Dunkirk	Standard	6,913
21716	Brunswick	Standard	6,753
21904	Port Deposit	Standard	6,689
20685	Saint Leonard	Standard	6,648
20837	Poolesville	Standard	6,634
21632	Federalsburg	Standard	6,616
21619	Chester	Standard	6,598
21727	Emmitsburg	Standard	6,593
20759	Fulton	Standard	6,562
21017	Belcamp	Standard	6,526
20722	Brentwood	Standard	6,498
21154	Street	Standard	6,309
20637	Hughesville	Standard	6,111
21152	Sparks Glencoe	Standard	6,045
21903	Perryville	Standard	5,835
21643	Hurlock	Standard	5,820
21252	Towson	Single org.	5,775
21776	New Windsor	Standard	5,726
21104	Marriottsville	Standard	5,686
21722	Clear Spring	Standard	5,674
21087	Kingsville	Standard	5,634
21755	Jefferson	Standard	5,627
21826	Fruitland	Standard	5,436
21773	Myersville	Standard	5,410
21161	White Hall	Standard	5,333
21791	Union Bridge	Standard	5,292
21111	Monkton	Standard	5,062
21638	Grasonville	Standard	5,058
21162	White Marsh	Standard	5,029
21013	Baldwin	Standard	4,861
21863	Snow Hill	Standard	4,843
21817	Crisfield	Standard	4,825
21758	Knoxville	Standard	4,809
21655	Preston	Standard	4,798
20742	College Park	Single org.	4,769
21710	Adamstown	Standard	4,769
20622	Charlotte Hall	Standard	4,741
21639	Greensboro	Standard	4,354
21918	Conowingo	Standard	4,269
21830	Hebron	Standard	4,217
20764	Shady Side	Standard	4,199
21057	Glen Arm	Standard	4,060
20714	North Beach	Standard	4,036
21536	Grantsville	Standard	4,029
21660	Ridgely	Standard	3,927
21782	Sharpsburg	Standard	3,866
21658	Queenstown	Standard	3,723
21756	Keedysville	Standard	3,669
21750	Hancock	Standard	3,662
21140	Riva	Standard	3,625
20777	Highland	Standard	3,527
20676	Port Republic	Standard	3,462
21250	Baltimore	Single org.	3,391
21738	Glenwood	Standard	3,373
21034	Darlington	Standard	3,314
20776	Harwood	Standard	3,266
21890	Westover	Single org.	3,258
21053	Freeland	Standard	3,199
21028	Churchville	Standard	3,172
21850	Pittsville	Standard	3,167
21849	Parsonsburg	Standard	3,162
21663	Saint Michaels	Standard	3,142
21919	Earleville	Standard	3,124
21673	Trappe	Standard	3,122
20861	Ashton	Standard	3,067
20762	Andrews Air Force Base	Standard	3,002
21915	Chesapeake City	Standard	2,981
20664	Newburg	Standard	2,940
21132	Pylesville	Standard	2,930
21757	Keymar	Standard	2,870
21813	Bishopville	Standard	2,862
21746	Hagerstown	Single org.	2,861
21562	Westernport	Standard	2,857
20623	Cheltenham	Standard	2,846
20733	Churchton	Standard	2,806
20763	Savage	Standard	2,745
21651	Millington	Standard	2,718
21837	Mardela Springs	Standard	2,647
21631	East New Market	Standard	2,644
21561	Swanton	Standard	2,571
20662	Nanjemoy	Standard	2,564
21155	Upperco	Standard	2,553
21822	Eden	Standard	2,548
21539	Lonaconing	Standard	2,536
21794	West Friendship	Standard	2,532
20677	Port Tobacco	Standard	2,475
21160	Whiteford	Standard	2,449
21661	Rock Hall	Standard	2,427
21917	Colora	Standard	2,384
20751	Deale	Standard	2,374
21798	Woodsboro	Standard	2,366
21625	Cordova	Standard	2,329
21737	Glenelg	Standard	2,318
21036	Dayton	Standard	2,307
21623	Church Hill	Standard	2,244
21874	Willards	Standard	2,240
21531	Friendsville	Standard	2,176
21678	Worton	Standard	2,145
20860	Sandy Spring	Standard	2,079
21520	Accident	Standard	2,060
20842	Dickerson	Standard	2,021
21635	Galena	Standard	1,969
21871	Westover	Standard	1,918
20689	Sunderland	Standard	1,915
21557	Rawlings	Standard	1,911
21777	Point Of Rocks	Standard	1,890
20778	West River	Standard	1,871
20818	Cabin John	Standard	1,832
21640	Henderson	Standard	1,798
21649	Marydel	Standard	1,764
21668	Sudlersville	Standard	1,745
20675	Pomfret	Standard	1,728
21545	Mount Savage	Standard	1,719
21838	Marion Station	Standard	1,717
21005	Aberdeen Proving Ground	Standard	1,709
21780	Sabillasville	Standard	1,688
21541	Mc Henry	Standard	1,626
21555	Oldtown	Standard	1,619
20620	Callaway	Standard	1,588
21530	Flintstone	Standard	1,520
20688	Solomons	Standard	1,462
21912	Warwick	Standard	1,312
20779	Tracys Landing	Standard	1,272
21719	Cascade	Standard	1,230
20670	Patuxent River	Standard	1,226
20621	Chaptico	Standard	1,214
20701	Annapolis Junction	Standard	1,195
20684	Saint Inigoes	Standard	1,193
20629	Dowell	PO Box	1,188
21636	Goldsboro	Standard	1,186
21521	Barton	Standard	1,171
21767	Maugansville	Standard	1,150
21778	Rocky Ridge	Standard	1,145
20624	Clements	Standard	1,138
21733	Fairplay	Standard	1,134
21654	Oxford	Standard	1,129
21657	Queen Anne	Standard	1,108
21711	Big Pool	Standard	1,108
21659	Rhodesdale	Standard	1,102
20611	Bel Alton	Standard	1,100
20609	Avenue	Standard	1,076
20618	Bushwood	Standard	1,073
20693	Welcome	Standard	1,067
21402	Annapolis	Standard	1,026
20896	Garrett Park	PO Box	1,019
20889	Bethesda	Single org.	1,010
21645	Kennedyville	Standard	1,005
20686	Saint Marys City	PO Box	977
21779	Rohrersville	Standard	971
20658	Marbury	Standard	968
20690	Tall Timbers	Standard	954
20680	Ridge	Standard	944
21723	Cooksville	Standard	937
21869	Vienna	Standard	908
21841	Newark	Standard	903
21856	Quantico	Standard	879
20608	Aquasco	Standard	878
21153	Stevenson	PO Box	865
20625	Cobb Island	PO Box	848
21821	Deal Island	Standard	847
21734	Funkstown	PO Box	845
21861	Sharptown	PO Box	830
21082	Hydes	Standard	815
21671	Tilghman	Standard	773
20645	Issue	Standard	769
20617	Bryantown	Standard	761
20758	Friendship	Standard	741
20692	Valley Lee	Standard	738
21914	Charlestown	PO Box	736
20674	Piney Point	Standard	718
21872	Whaleyville	Standard	684
21913	Cecilton	PO Box	682
20868	Spencerville	Standard	671
21662	Royal Oak	Standard	668
21529	Ellerslie	PO Box	651
21766	Little Orleans	Standard	633
21405	Annapolis	Standard	622
21538	Kitzmiller	Standard	622
21071	Glyndon	PO Box	619
20628	Dameron	Standard	599
21864	Stockton	Standard	590
20630	Drayden	Standard	586
21920	Elk Mills	PO Box	555
20632	Faulkner	Standard	538
20880	Washington Grove	PO Box	504
21524	Corriganville	PO Box	500
21628	Crumpton	PO Box	496
21607	Barclay	Standard	492
21829	Girdletree	Standard	479
21622	Church Creek	Standard	475
21664	Secretary	PO Box	472
21835	Linkwood	Standard	472
20667	Park Hall	Standard	471
20765	Galesville	PO Box	466
20862	Brinklow	Standard	453
21865	Tyaskin	Standard	439
21612	Bozman	Standard	432
21052	Fort Howard	PO Box	430
21679	Wye Mills	Standard	429
21677	Woolford	Standard	415
21902	Perry Point	PO Box	414
20626	Coltons Point	Standard	403
20615	Broomes Island	Standard	379
21840	Nanticoke	Standard	371
21714	Braddock Heights	PO Box	358
21814	Bivalve	Standard	342
21077	Harmans	Standard	336
21056	Gibson Island	PO Box	329
21676	Wittman	Standard	315
20687	Scotland	Standard	304
21634	Fishing Creek	Standard	302
21610	Betterton	Standard	297
21665	Sherwood	Standard	291
20812	Glen Echo	Standard	287
21667	Still Pond	Standard	285
21251	Baltimore	Single org.	277
21523	Bloomington	Standard	271
21156	Upper Falls	Standard	259
21051	Fork	Standard	256
20606	Abell	Standard	251
21647	Mcdaniel	Standard	248
21648	Madison	Standard	233
21762	Libertytown	PO Box	233
20612	Benedict	PO Box	232
21543	Midlothian	PO Box	230
20838	Barnesville	Standard	218
21650	Massey	Standard	206
21624	Claiborne	PO Box	201
21717	Buckeystown	PO Box	199
21810	Allen	PO Box	199
21669	Taylors Island	PO Box	189
20839	Beallsville	Standard	176
21824	Ewell	Standard	166
21781	Saint James	PO Box	165
21652	Neavitt	PO Box	161
21672	Toddville	Standard	158
21010	Gunpowder	Standard	153
21130	Perryman	PO Box	140
21718	Burkittsville	Standard	134
21641	Hillsboro	PO Box	128
20899	Gaithersburg	Single org.	125
21653	Newcomb	PO Box	124
21862	Showell	Standard	119
21542	Midland	PO Box	110
20660	Morganza	PO Box	107
20656	Loveville	Standard	106
21626	Crapo	Standard	101
21644	Ingleside	Standard	93
21790	Tuscarora	Standard	93
21023	Butler	PO Box	89
21675	Wingate	Standard	87
21715	Brownsville	PO Box	87
21540	Luke	Standard	85
21867	Upper Fairmount	PO Box	78
21105	Maryland Line	PO Box	56
21930	Georgetown	PO Box	56
21866	Tylerton	PO Box	36
21560	Spring Gap	PO Box	35
21627	Crocheron	Standard	27
21031	Hunt Valley	Standard	11
21705	Frederick	PO Box	9
21233	Baltimore	Standard	4
20771	Greenbelt	Single org.	3
20892	Bethesda	Single org.	2
21285	Towson	PO Box	2
20588	Dhs	Single org.	–
20604	Waldorf	PO Box	–
20610	Barstow	PO Box	–
20627	Compton	PO Box	–
20635	Helen	PO Box	–
20643	Ironsides	PO Box	–
20661	Mount Victoria	PO Box	–
20682	Rock Point	PO Box	–
20697	Southern Md Facility	Single org.	–
20703	Lanham	PO Box	–
20704	Beltsville	PO Box	–
20709	Laurel	PO Box	–
20717	Bowie	PO Box	–
20718	Bowie	PO Box	–
20719	Bowie	PO Box	–
20725	Laurel	PO Box	–
20726	Laurel	PO Box	–
20731	Capitol Heights	PO Box	–
20738	Riverdale	PO Box	–
20741	College Park	PO Box	–
20749	Fort Washington	PO Box	–
20750	Oxon Hill	PO Box	–
20752	Suitland	PO Box	–
20753	District Heights	PO Box	–
20757	Temple Hills	PO Box	–
20768	Greenbelt	PO Box	–
20773	Upper Marlboro	PO Box	–
20775	Upper Marlboro	PO Box	–
20787	Hyattsville	PO Box	–
20788	Hyattsville	PO Box	–
20790	Capitol Heights	Single org.	–
20791	Capitol Heights	PO Box	–
20792	Upper Marlboro	PO Box	–
20797	Southern Md Facility	Single org.	–
20799	Capitol Heights	Single org.	–
20810	Bethesda	Single org.	–
20811	Bethesda	Single org.	–
20813	Bethesda	PO Box	–
20824	Bethesda	PO Box	–
20825	Chevy Chase	PO Box	–
20827	Bethesda	PO Box	–
20830	Olney	PO Box	–
20847	Rockville	PO Box	–
20848	Rockville	PO Box	–
20849	Rockville	PO Box	–
20857	Rockville	Single org.	–
20859	Potomac	PO Box	–
20875	Germantown	PO Box	–
20883	Gaithersburg	PO Box	–
20884	Gaithersburg	PO Box	–
20885	Gaithersburg	PO Box	–
20891	Kensington	PO Box	–
20894	Bethesda	Single org.	–
20897	Suburb Maryland Fac	Single org.	–
20898	Gaithersburg	PO Box	–
20907	Silver Spring	PO Box	–
20908	Silver Spring	PO Box	–
20911	Silver Spring	PO Box	–
20913	Takoma Park	PO Box	–
20914	Silver Spring	PO Box	–
20915	Silver Spring	PO Box	–
20916	Silver Spring	PO Box	–
20918	Silver Spring	PO Box	–
20993	Silver Spring	Single org.	–
20997	Silver Spring	Single org.	–
21018	Benson	PO Box	–
21020	Boring	PO Box	–
21022	Brooklandville	PO Box	–
21027	Chase	PO Box	–
21041	Ellicott City	PO Box	–
21062	Glen Burnie	Single org.	–
21065	Hunt Valley	Single org.	–
21088	Lineboro	PO Box	–
21092	Long Green	PO Box	–
21094	Lutherville Timonium	PO Box	–
21106	Mayo	PO Box	–
21123	Pasadena	PO Box	–
21139	Riderwood	PO Box	–
21150	Simpsonville	PO Box	–
21203	Baltimore	PO Box	–
21235	Baltimore	Single org.	–
21240	Baltimore	Standard	–
21241	Baltimore	Single org.	–
21263	Baltimore	Single org.	–
21264	Baltimore	Single org.	–
21270	Baltimore	PO Box	–
21273	Baltimore	Single org.	–
21275	Baltimore	Single org.	–
21278	Baltimore	Single org.	–
21279	Baltimore	Single org.	–
21281	Baltimore	PO Box	–
21282	Pikesville	PO Box	–
21284	Towson	PO Box	–
21287	Baltimore	Standard	–
21289	Baltimore	Single org.	–
21290	Baltimore	Single org.	–
21297	Baltimore	PO Box	–
21298	Baltimore	Single org.	–
21404	Annapolis	PO Box	–
21411	Annapolis	Single org.	–
21412	Annapolis	Standard	–
21501	Cumberland	PO Box	–
21503	Cumberland	PO Box	–
21504	Cumberland	PO Box	–
21505	Cumberland	PO Box	–
21522	Bittinger	Standard	–
21528	Eckhart Mines	PO Box	–
21556	Pinto	PO Box	–
21609	Bethlehem	PO Box	–
21656	Price	PO Box	–
21670	Templeville	PO Box	–
21690	Chestertown	Single org.	–
21709	Frederick	Single org.	–
21720	Cavetown	PO Box	–
21721	Chewsville	PO Box	–
21741	Hagerstown	PO Box	–
21747	Hagerstown	PO Box	–
21749	Hagerstown	Single org.	–
21759	Ladiesburg	PO Box	–
21765	Lisbon	PO Box	–
21775	New Midway	PO Box	–
21792	Unionville	PO Box	–
21802	Salisbury	PO Box	–
21803	Salisbury	PO Box	–
21836	Manokin	PO Box	–
21843	Ocean City	PO Box	–
21852	Powellville	PO Box	–
21857	Rehobeth	PO Box	–
21916	Childs	PO Box	–
21922	Elkton	PO Box	–

Largest first by 2020 population; “–” marks ZIPs with no residents of their own.

Counties in Maryland

ZIP codes in each:

Allegany County (19)

Anne Arundel County (44)

Baltimore County (53)

Baltimore city (38)

Calvert County (13)

Caroline County (10)

Carroll County (9)

Cecil County (17)

Charles County (25)

Dorchester County (16)

Frederick County (32)

Garrett County (12)

Harford County (21)

Howard County (22)

Kent County (9)

Montgomery County (77)

Prince George's County (63)

Queen Anne's County (14)

Somerset County (11)

St. Mary's County (28)

Talbot County (15)

Washington County (24)

Wicomico County (19)

Worcester County (12)

About these numbers

Population is the 2020 Census count for each ZIP Code Tabulation Area, the Census Bureau’s outline of the area a ZIP code delivers to. ZIP codes for PO Boxes and single organizations have no area of their own, so they count as zero. City names are postal city names (the name the Postal Service prefers on mail), not city limits, so a suburb with its own post office is counted as its own city.

Each ZIP is counted in the one county that holds most of its outline; ZIP codes do not follow county lines, so a few reach partly into a neighbor.

The map above opens with all 603 selected and framed. Click or tap a ZIP to drop it or add a neighbor, draw a circle or lasso to add more, then press Copy list or Download in the list panel to take the ZIP codes of Maryland into a spreadsheet, an ad platform or a mailing tool.

ZipZoomer Maryland ZIP Codes

About Maryland’s ZIP codes

ZIP codes in Maryland

Counties in Maryland

Other states

About these numbers

Related tools