ZIP codes

ZIP codes in Baltimore city, Maryland

Baltimore city has 32 ZIP codes. 15 lie entirely inside it and 17 are shared with neighboring counties, so part of their land and their people are elsewhere. About 571,687 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes: 32; 1 more just touches the border (under 1% of their land)
Entirely inside: 15; 99% or more of their land
Shared with other counties: 17; Most with Baltimore County (15)
Most populated ZIP: 21215; 52,229 people · Baltimore
Least populated ZIP: 21251; 191 people · Baltimore; 2 more with nobody living there
Largest ZIP by land: 21226; 9.8 sq mi · Baltimore

Map of the ZIP codes in Baltimore city

Entirely in the county (99% or more of its land)
Shared, mostly in this county
Shared, mostly in other counties
Neighboring counties

Open in the interactive tool

Each area is a ZIP code with its number where it fits. Hover over one to see its name.

All ZIP codes in Baltimore city

32 ZIP codes in Baltimore city, MD, by number
ZIP code	Main city	Population	Land in the county	Residents in the county
21201	Baltimore	18,307	100%	18,307
21202	Baltimore	20,683	100%	20,683
21205	Baltimore	13,013	100%	13,013
21206	Baltimore	48,902	69%	≈ 37,587
21207	Lochearn	47,099	28%	≈ 12,813
21208	Pikesville	37,276	1.4%	≈ 1,806
21209	Baltimore	30,126	44%	≈ 14,198
21210	Baltimore	14,134	84%	≈ 13,365
21211	Baltimore	14,969	100%	14,969
21212	Baltimore	33,974	57%	≈ 21,835
21213	Baltimore	28,058	100%	28,058
21214	Baltimore	21,092	100%	21,092
21215	Baltimore	52,229	97%	≈ 51,320
21216	Baltimore	29,426	100%	29,426
21217	Baltimore	30,792	100%	30,792
21218	Baltimore	44,014	100%	44,014
21222	Dundalk	59,407	6.5%	≈ 1,427
21223	Baltimore	19,572	100%	19,572
21224	Baltimore	47,465	73%	≈ 38,334
21225	Brooklyn Park	34,062	36%	≈ 17,125
21226	Baltimore	6,674	50%	≈ 2,267
21227	Arbutus	34,907	3.3%	≈ 1,166
21229	Baltimore	46,679	86%	≈ 38,199
21230	Baltimore	32,977	100%	32,977
21231	Baltimore	14,969	100%	14,969
21233	Baltimore	0	100%	0
21234	Carney	66,334	7.3%	≈ 7,697
21236	Perry Hall	39,514	1.9%	≈ 896
21237	Rosedale	31,425	6.3%	≈ 1,065
21239	Baltimore	27,346	73%	≈ 22,404
21251	Baltimore	191	100%	191
21287	Baltimore	0	100%	0

They also touch the county with under 1% of their land, so they aren’t counted: 21228.

ZIP codes shared with other counties

These 17 ZIP codes have part of their land in another county. The first figure is the share of their land in Baltimore city; then, where the rest lies.

21206 (Baltimore): 69% here; 31% in Baltimore County.
21207 (Lochearn): 28% here; 72% in Baltimore County.
21208 (Pikesville): 1.4% here; 99% in Baltimore County.
21209 (Baltimore): 44% here; 56% in Baltimore County.
21210 (Baltimore): 84% here; 16% in Baltimore County.
21212 (Baltimore): 57% here; 43% in Baltimore County.
21215 (Baltimore): 97% here; 3.5% in Baltimore County.
21222 (Dundalk): 6.5% here; 94% in Baltimore County.
21224 (Baltimore): 73% here; 27% in Baltimore County.
21225 (Brooklyn Park): 36% here; 64% in Anne Arundel County.
21226 (Baltimore): 50% here; 50% in Anne Arundel County.
21227 (Arbutus): 3.3% here; 97% in Baltimore County.
21229 (Baltimore): 86% here; 14% in Baltimore County.
21234 (Carney): 7.3% here; 93% in Baltimore County.
21236 (Perry Hall): 1.9% here; 98% in Baltimore County.
21237 (Rosedale): 6.3% here; 94% in Baltimore County.
21239 (Baltimore): 73% here; 27% in Baltimore County.

Cities and prefixes

By main city (the city, town or CDP each ZIP shares the most land with), the ones with the most are Baltimore (24), Arbutus (1), Brooklyn Park (1), Carney (1), Dundalk (1), and Lochearn (1); 9 places in all.

All 32 start with the same three digits, 212: the prefix of the USPS sorting center that handles them.

Neighboring counties

Each one with its ZIP codes. Those without a page of their own open in the tool.

Tools for this county

ZIP codes by county or city The same ZIP codes on an interactive map, with the list as CSV or to copy County map with cities Its cities, towns and CDPs with their population ZIP codes in a radius The ZIP codes within 10 miles of its center, or any distance you like

Sources

U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.

How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.

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