Maryland Zip Codes
450 zip codes in Maryland. Capital: Annapolis. Nickname: Old Line State.
Quick Facts
- Total ZIP codes
- 450
- Counties covered
- 24
- Cities and places
- 311
- Top cities by ZIP count
- Baltimore, Hyattsville, Silver Spring
- Time zone
- Eastern Time (ET)
- Capital
- Annapolis
Top ZIP Rankings in Maryland
Ranked top 10 lists by household income, population, and home value.
About Maryland Zip Codes
Maryland (MD), known as the Old Line State, with its capital in Annapolis, contains 450 unique USPS ZIP codes distributed across 24 counties and 311 distinct cities and places. The state observes Eastern Time (ET). ZIP codes here cover residential addresses, PO box ranges, business districts, and unique large-volume customer codes.
The cities with the most ZIP codes in Maryland are Baltimore, Hyattsville, Silver Spring, Annapolis, Cambridge. Larger metro areas use multiple ZIP codes to separate neighborhoods, business districts, and PO box ranges. The counties with the highest ZIP density are Montgomery County, Baltimore County, Anne Arundel County, Prince Georges County, Frederick County, reflecting both population and geographic spread.
Maryland ZIP codes range from 20601 to 21930. The first digit reflects the USPS national region and the next two narrow down to a sectional center facility that routes mail across the state. Use the lists below to browse every ZIP code by county or by city, or jump straight to a ZIP for population, income, housing, weather, and cost of living details.
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Browse by County
- Allegany County (15)
- Anne Arundel County (35)
- Baltimore city (20)
- Baltimore County (39)
- Calvert County (13)
- Caroline County (9)
- Carroll County (10)
- Cecil County (15)
- Charles County (21)
- Dorchester County (16)
- Frederick County (26)
- Garrett County (9)
- Harford County (20)
- Howard County (18)
- Kent County (9)
- Montgomery County (44)
- Prince Georges County (34)
- Queen Annes County (11)
- Somerset County (8)
- St. Marys County (23)
- Talbot County (14)
- Washington County (15)
- Wicomico County (16)
- Worcester County (10)
Browse by Top Cities
- Baltimore (19)
- Hyattsville (8)
- Silver Spring (8)
- Annapolis (6)
- Cambridge (6)
- Laurel (5)
- Waldorf (4)
- Bowie (4)
- Bethesda (4)
- Rockville (4)
- Frederick (4)
- Valley Lee (3)
- Lexington Park (3)
- Ashton (3)
- Baldwin (3)
- Columbia (3)
- Dundalk (3)
- Elkridge (3)
- Randallstown (3)
- Nottingham (3)
- Brooklyn (3)
- Lonaconing (3)
- Saint Michaels (3)
- Salisbury (3)
- Berlin (3)
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All Zip Codes in Maryland
Allegany County (15 ZIP codes)
| Zip Code | City |
|---|---|
| 21502 | Cumberland |
| 21521 | Barton |
| 21524 | Corriganville |
| 21529 | Ellerslie |
| 21530 | Flintstone |
| 21532 | Frostburg |
| 21539 | Lonaconing |
| 21540 | Lonaconing |
| 21542 | Midland |
| 21543 | Midlothian |
| 21545 | Frostburg |
| 21555 | Oldtown |
| 21557 | Rawlings |
| 21562 | Lonaconing |
| 21766 | Hancock |
Anne Arundel County (35 ZIP codes)
| Zip Code | City |
|---|---|
| 20711 | Lothian |
| 20724 | Laurel |
| 20733 | Churchton |
| 20751 | Deale |
| 20755 | Fort George G Meade |
| 20758 | Friendship |
| 20764 | Shady Side |
| 20765 | Galesville |
| 20776 | Harwood |
| 20778 | Shady Side |
| 20779 | Tracys Landing |
| 20794 | Jessup |
| 21012 | Annapolis |
| 21032 | Annapolis |
| 21035 | Annapolis |
| 21037 | Edgewater |
| 21054 | Gambrills |
| 21056 | Gibson Island |
| 21060 | Glen Burnie |
| 21061 | Glen Burnie |
| 21076 | Elkridge |
| 21077 | Elkridge |
| 21090 | Linthicum Heights |
| 21108 | Millersville |
| 21113 | Millersville |
| 21114 | Crofton |
| 21122 | Pasadena |
| 21140 | Edgewater |
| 21144 | Severn |
| 21146 | Severna Park |
| 21226 | Brooklyn |
| 21401 | Annapolis |
| 21402 | Annapolis |
| 21403 | Annapolis |
| 21405 | Sherwood Forest |
Baltimore city (20 ZIP codes)
Baltimore County (39 ZIP codes)
| Zip Code | City |
|---|---|
| 21013 | Baldwin |
| 21030 | Cockeysville |
| 21031 | Cockeysville |
| 21051 | Fork |
| 21052 | Dundalk |
| 21053 | Freeland |
| 21057 | Baldwin |
| 21071 | Glyndon |
| 21082 | Baldwin |
| 21087 | Kingsville |
| 21093 | Lutherville Timonium |
| 21105 | Maryland Line |
| 21111 | Monkton |
| 21117 | Owings Mills |
| 21120 | Parkton |
| 21128 | Nottingham |
| 21131 | Phoenix |
| 21133 | Randallstown |
| 21136 | Reisterstown |
| 21152 | Sparks Glencoe |
| 21155 | Hampstead |
| 21156 | Upper Falls |
| 21162 | Nottingham |
| 21163 | Randallstown |
| 21204 | Towson |
| 21207 | Gwynn Oak |
| 21208 | Pikesville |
| 21209 | Baltimore |
| 21219 | Dundalk |
| 21220 | Middle River |
| 21221 | Essex |
| 21222 | Dundalk |
| 21227 | Halethorpe |
| 21228 | Catonsville |
| 21234 | Parkville |
| 21236 | Nottingham |
| 21237 | Rosedale |
| 21244 | Windsor Mill |
| 21286 | Towson |
Calvert County (13 ZIP codes)
| Zip Code | City |
|---|---|
| 20615 | Broomes Island |
| 20629 | Dowell |
| 20639 | Huntingtown |
| 20657 | Lusby |
| 20676 | Port Republic |
| 20678 | Prince Frederick |
| 20685 | Saint Leonard |
| 20688 | Solomons |
| 20689 | Huntingtown |
| 20714 | North Beach |
| 20732 | Chesapeake Beach |
| 20736 | Owings |
| 20754 | Dunkirk |
Caroline County (9 ZIP codes)
| Zip Code | City |
|---|---|
| 21629 | Denton |
| 21632 | Federalsburg |
| 21636 | Goldsboro |
| 21639 | Greensboro |
| 21640 | Goldsboro |
| 21641 | Hillsboro |
| 21649 | Marydel |
| 21655 | Preston |
| 21660 | Ridgely |
Carroll County (10 ZIP codes)
Cecil County (15 ZIP codes)
| Zip Code | City |
|---|---|
| 21901 | North East |
| 21902 | Perry Point |
| 21903 | Perryville |
| 21904 | Port Deposit |
| 21911 | Rising Sun |
| 21912 | Warwick |
| 21913 | Cecilton |
| 21914 | Charlestown |
| 21915 | Chesapeake City |
| 21917 | Colora |
| 21918 | Conowingo |
| 21919 | Earleville |
| 21920 | Elk Mills |
| 21921 | Elkton |
| 21930 | Georgetown |
Charles County (21 ZIP codes)
| Zip Code | City |
|---|---|
| 20601 | Waldorf |
| 20602 | Waldorf |
| 20603 | Waldorf |
| 20611 | Faulkner |
| 20612 | Benedict |
| 20616 | Bryans Road |
| 20617 | Bryantown |
| 20622 | Charlotte Hall |
| 20625 | Cobb Island |
| 20632 | Faulkner |
| 20637 | Hughesville |
| 20640 | Indian Head |
| 20645 | Newburg |
| 20646 | La Plata |
| 20658 | Indian Head |
| 20662 | Nanjemoy |
| 20664 | Newburg |
| 20675 | Pomfret |
| 20677 | Port Tobacco |
| 20693 | Welcome |
| 20695 | Waldorf |
Dorchester County (16 ZIP codes)
| Zip Code | City |
|---|---|
| 21613 | Cambridge |
| 21622 | Church Creek |
| 21626 | Cambridge |
| 21627 | Cambridge |
| 21631 | East New Market |
| 21634 | Fishing Creek |
| 21643 | Hurlock |
| 21648 | Woolford |
| 21659 | Hurlock |
| 21664 | Secretary |
| 21669 | Taylors Island |
| 21672 | Cambridge |
| 21675 | Cambridge |
| 21677 | Woolford |
| 21835 | Linkwood |
| 21869 | Mardela Springs |
Frederick County (26 ZIP codes)
| Zip Code | City |
|---|---|
| 21701 | Frederick |
| 21702 | Frederick |
| 21703 | Frederick |
| 21704 | Frederick |
| 21710 | Adamstown |
| 21716 | Brunswick |
| 21717 | Buckeystown |
| 21718 | Burkittsville |
| 21727 | Emmitsburg |
| 21754 | New Market |
| 21755 | Jefferson |
| 21757 | Keymar |
| 21758 | Brunswick |
| 21762 | Libertytown |
| 21769 | Middletown |
| 21770 | Monrovia |
| 21771 | Mount Airy |
| 21773 | Myersville |
| 21774 | New Market |
| 21777 | Point of Rocks |
| 21778 | Rocky Ridge |
| 21780 | Sabillasville |
| 21788 | Thurmont |
| 21790 | Point of Rocks |
| 21793 | Walkersville |
| 21798 | Woodsboro |
Garrett County (9 ZIP codes)
| Zip Code | City |
|---|---|
| 21520 | Accident |
| 21522 | Bittinger |
| 21523 | Bloomington |
| 21531 | Accident |
| 21536 | Grantsville |
| 21538 | Kitzmiller |
| 21541 | Mc Henry |
| 21550 | Oakland |
| 21561 | Swanton |
Harford County (20 ZIP codes)
| Zip Code | City |
|---|---|
| 21001 | Aberdeen |
| 21005 | Aberdeen Proving Ground |
| 21009 | Abingdon |
| 21010 | Aberdeen Proving Ground |
| 21014 | Bel Air |
| 21015 | Bel Air |
| 21017 | Belcamp |
| 21028 | Churchville |
| 21034 | Darlington |
| 21040 | Edgewood |
| 21047 | Fallston |
| 21050 | Forest Hill |
| 21078 | Havre De Grace |
| 21084 | Jarrettsville |
| 21085 | Joppa |
| 21130 | Perryman |
| 21132 | Pylesville |
| 21154 | Street |
| 21160 | Street |
| 21161 | White Hall |
Howard County (18 ZIP codes)
Kent County (9 ZIP codes)
| Zip Code | City |
|---|---|
| 21610 | Betterton |
| 21620 | Chestertown |
| 21635 | Galena |
| 21645 | Kennedyville |
| 21650 | Galena |
| 21651 | Millington |
| 21661 | Rock Hall |
| 21667 | Worton |
| 21678 | Worton |
Montgomery County (44 ZIP codes)
| Zip Code | City |
|---|---|
| 20812 | Glen Echo |
| 20814 | Bethesda |
| 20815 | Bethesda |
| 20816 | Bethesda |
| 20817 | Bethesda |
| 20818 | Cabin John |
| 20832 | Olney |
| 20833 | Brookeville |
| 20837 | Poolesville |
| 20838 | Barnesville |
| 20839 | Poolesville |
| 20841 | Boyds |
| 20842 | Dickerson |
| 20850 | Rockville |
| 20851 | Rockville |
| 20852 | Rockville |
| 20853 | Rockville |
| 20854 | Potomac |
| 20855 | Derwood |
| 20860 | Ashton |
| 20861 | Ashton |
| 20862 | Ashton |
| 20866 | Burtonsville |
| 20868 | Spencerville |
| 20871 | Clarksburg |
| 20872 | Damascus |
| 20874 | Germantown |
| 20876 | Germantown |
| 20877 | Gaithersburg |
| 20878 | Gaithersburg |
| 20879 | Montgomery Village |
| 20880 | Washington Grove |
| 20882 | Damascus |
| 20886 | Montgomery Village |
| 20895 | Kensington |
| 20896 | Garrett Park |
| 20901 | Silver Spring |
| 20902 | Silver Spring |
| 20903 | Silver Spring |
| 20904 | Silver Spring |
| 20905 | Silver Spring |
| 20906 | Silver Spring |
| 20910 | Silver Spring |
| 20912 | Silver Spring |
Prince Georges County (34 ZIP codes)
| Zip Code | City |
|---|---|
| 20607 | Accokeek |
| 20608 | Hughesville |
| 20613 | Brandywine |
| 20623 | Brandywine |
| 20705 | Beltsville |
| 20706 | Lanham |
| 20707 | Laurel |
| 20708 | Laurel |
| 20710 | Hyattsville |
| 20712 | Hyattsville |
| 20715 | Bowie |
| 20716 | Bowie |
| 20720 | Bowie |
| 20721 | Bowie |
| 20722 | Brentwood |
| 20735 | Clinton |
| 20737 | Hyattsville |
| 20740 | College Park |
| 20743 | Capitol Heights |
| 20744 | Fort Washington |
| 20745 | Oxon Hill |
| 20746 | Suitland |
| 20747 | District Heights |
| 20748 | Temple Hills |
| 20762 | Suitland |
| 20769 | Glenn Dale |
| 20770 | Greenbelt |
| 20772 | Upper Marlboro |
| 20774 | Upper Marlboro |
| 20781 | Hyattsville |
| 20782 | Hyattsville |
| 20783 | Hyattsville |
| 20784 | Hyattsville |
| 20785 | Hyattsville |
Queen Annes County (11 ZIP codes)
| Zip Code | City |
|---|---|
| 21607 | Barclay |
| 21617 | Centreville |
| 21619 | Chester |
| 21623 | Church Hill |
| 21628 | Crumpton |
| 21638 | Grasonville |
| 21644 | Church Hill |
| 21657 | Queen Anne |
| 21658 | Queenstown |
| 21666 | Stevensville |
| 21668 | Sudlersville |
Somerset County (8 ZIP codes)
| Zip Code | City |
|---|---|
| 21817 | Crisfield |
| 21821 | Deal Island |
| 21824 | Ewell |
| 21838 | Crisfield |
| 21853 | Princess Anne |
| 21866 | Tylerton |
| 21867 | Upper Fairmount |
| 21871 | Princess Anne |
St. Marys County (23 ZIP codes)
| Zip Code | City |
|---|---|
| 20606 | Abell |
| 20609 | Avenue |
| 20618 | Bushwood |
| 20619 | California |
| 20620 | Callaway |
| 20621 | Chaptico |
| 20624 | Clements |
| 20626 | Coltons Point |
| 20628 | Dameron |
| 20630 | Valley Lee |
| 20634 | Great Mills |
| 20636 | Hollywood |
| 20650 | Leonardtown |
| 20653 | Lexington Park |
| 20659 | Mechanicsville |
| 20667 | Lexington Park |
| 20670 | Lexington Park |
| 20674 | Piney Point |
| 20680 | Ridge |
| 20684 | Saint Inigoes |
| 20687 | Ridge |
| 20690 | Valley Lee |
| 20692 | Valley Lee |
Talbot County (14 ZIP codes)
| Zip Code | City |
|---|---|
| 21601 | Easton |
| 21612 | Bozman |
| 21624 | Saint Michaels |
| 21625 | Cordova |
| 21647 | Saint Michaels |
| 21653 | Newcomb |
| 21654 | Easton |
| 21662 | Royal Oak |
| 21663 | Saint Michaels |
| 21665 | Wittman |
| 21671 | Tilghman |
| 21673 | Cambridge |
| 21676 | Wittman |
| 21679 | Centreville |
Washington County (15 ZIP codes)
Wicomico County (16 ZIP codes)
Worcester County (10 ZIP codes)
| Zip Code | City |
|---|---|
| 21811 | Berlin |
| 21813 | Bishopville |
| 21829 | Girdletree |
| 21841 | Newark |
| 21842 | Ocean City |
| 21851 | Pocomoke City |
| 21862 | Berlin |
| 21863 | Snow Hill |
| 21864 | Girdletree |
| 21872 | Berlin |
Frequently Asked Questions
How many ZIP codes does Maryland have?
Maryland has 450 ZIP codes spanning 311 cities and places across 24 counties.
What are the major cities in Maryland?
The cities with the most ZIP codes in Maryland are Baltimore, Hyattsville, Silver Spring, Annapolis, Cambridge. Larger metro areas use multiple ZIP codes to cover individual neighborhoods.
Which county has the most ZIP codes in Maryland?
Montgomery County has the most with 44 ZIP codes. The next largest counties are Baltimore County, Anne Arundel County, Prince Georges County, Frederick County.
What time zone is Maryland in?
Maryland observes Eastern Time (ET).
What is the smallest ZIP code number in Maryland?
The lowest ZIP code in Maryland is 20601.
What is the largest ZIP code number in Maryland?
The highest ZIP code in Maryland is 21930.
How are ZIP codes structured in Maryland?
USPS ZIP codes are five digit numbers. The first digit indicates a broad U.S. region, the second and third narrow to a sectional center facility, and the last two identify a specific post office or delivery area. Maryland ZIP codes typically begin with "2".
What states border Maryland?
Maryland borders Delaware, Pennsylvania, West Virginia, Virginia, District of Columbia.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.