What city is 21201 in?

21201 is a Baltimore, MD mailing address. By land area, 100% lies inside Baltimore.

What is the population of 21201?

About 18,307 people (±1,423), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 18,382.

What is the median household income in 21201?

$45,640 (±$7,018), compared with $103,678 for Maryland as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 21201?

21 USPS carrier routes with 13,314 residential and 2,030 business mailboxes (15,347 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 21201?

The closest, measured center to center: 21202 (0.8 mi, Baltimore), 21233 (0.9 mi, Baltimore), 21217 (1.2 mi, Baltimore), 21231 (1.7 mi, Baltimore), 21287 (1.8 mi, Baltimore) and 21223 (1.9 mi, Baltimore).

21201 ZIP Code, Baltimore, MD

21201 is a ZIP code in Baltimore, Maryland in Baltimore city. It covers 1.3 square miles of land. The closest ZIP codes are 21202, 21233 and 21217. 18,307 people live here in 11,345 households. It is densely built, at about 14,415 people per square mile, and most households rent (11% own). Median household income is $45,640, well below the Maryland median of $103,678.

Quick facts

Mailing city: Baltimore, MD
County: Baltimore city County
Land area: 1.3 sq mi
Population: 18,307
Median household income: $45,640
Carrier routes: 21 (13,314 homes)

Key figures

Measure	Value
Residents	18,307
Households	11,345
Median household income	$45,640
Income per person	$43,711
Median age	33.6
Homeowners	11.0%
Median home value	$275,300
Median rent	$1,346
Bachelor's degree or higher	45.8%
Average commute (minutes)	23.4
Households with kids under 18	10.9%
Moved in the past year	17.0%
Below the poverty line	28.8%
Broadband internet	82.6%
Speak a non-English language at home	16.6%

Household income

% of households	Value
<$10K	14.1%
$10–15K	8.9%
$15–25K	11.9%
$25–35K	8.6%
$35–50K	8.8%
$50–75K	14.4%
$75–100K	11.3%
$100–150K	10.3%
$150–200K	5.7%
$200K+	6.0%

Age

% of all residents	Value
<10	7.1%
10–19	9.0%
20–24	8.0%
25–34	28.8%
35–44	14.1%
45–54	8.4%
55–64	12.9%
65–74	7.6%
75+	4.2%

Tenure

% of housing units	Value
Owned, with mortgage	6.3%
Owned outright	3.9%
Rented	82.9%
Vacant	6.9%

Type of building

% of housing units	Value
Detached house	1.6%
Townhome	18.7%
2–4 units	8.9%
5–19 units	16.9%
20+ units	53.7%
Mobile / other	0.2%

Businesses in 21201

1,166 business establishments with 37,672 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 259
Other Services (except Public Administration): 164
Accommodation and Food Services: 162
Health Care and Social Assistance: 150
Retail Trade: 99
Real Estate and Rental and Leasing: 86
Administrative and Support and Waste Management and Remediation Services: 53
Finance and Insurance: 48

EDDM carrier routes

21201 has 21 USPS carrier routes with 13,314 residential and 2,030 business mailboxes. Open the EDDM route map.

Carrier routes in 21201

21201 has 21 USPS carrier routes (21 city (C)) with 13,314 residential and 2,030 business mailboxes. Routes range from 19 homes (C045) to 1,033 homes (C053); the median route has 634 homes. The Census counted 11,345 households in 21201 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	3
250–499	3
500–749	6
750–999	8
1,000–1,499	1
1,500+	0

Best routes in 21201 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

Route C029 — USPS business mailboxes 195, 496 homes
Route C057 — USPS business mailboxes 186, 816 homes
Route C045 — USPS business mailboxes 167, 19 homes
Route C054 — USPS business mailboxes 160, 785 homes
Route C042 — USPS business mailboxes 153, 180 homes

Select these 5 routes on the route map

Every carrier route in 21201

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	553	62	$44,918	—	—	—
C003	City	517	139	$62,370	—	—	—
C015	City	672	38	$62,370	—	—	—
C017	City	822	8	$15,332	—	—	—
C018	City	556	108	$84,069	—	—	—
C022	City	764	50	$36,042	—	—	—
C024	City	634	136	$62,609	—	—	—
C025	City	178	43	$58,212	—	—	—
C026	City	811	71	$64,520	—	—	—
C029	City	496	195	$62,609	—	—	—
C031	City	928	56	$58,212	—	—	—
C033	City	968	152	$63,709	—	—	—
C039	City	498	45	$77,435	—	—	—
C042	City	180	153	$64,520	—	—	—
C044	City	990	59	$45,797	—	—	—
C045	City	19	167	$67,327	—	—	—
C047	City	476	80	$62,370	—	—	—
C051	City	618	66	$14,074	—	—	—
C053	City	1,033	56	$64,520	—	—	—
C054	City	785	160	$63,709	—	—	—
C057	City	816	186	$63,709	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 21201 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

21202 — Baltimore city, MD (0.8 mi)
21233 — Baltimore city, MD (0.9 mi)
21217 — Baltimore city, MD (1.2 mi)
21231 — Baltimore city, MD (1.7 mi)
21287 — Baltimore city, MD (1.8 mi)
21223 — Baltimore city, MD (1.9 mi)
21230 — Baltimore city, MD (1.9 mi)
21211 — Baltimore city, MD (2.5 mi)

Areas that include 21201

Baltimore, MD ZIP codes — 28 ZIP codes
Baltimore city County ZIP codes — 26 ZIP codes
Maryland ZIP code data

Where it ranks

Mail every home in 21201

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

Baltimore EDDM mailing

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 21201, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 21201 in?: 21201 is a Baltimore, MD mailing address. By land area, 100% lies inside Baltimore.
What county is 21201 in?: 21201 is in Baltimore city.
What is the population of 21201?: About 18,307 people (±1,423), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 18,382.
What is the median household income in 21201?: $45,640 (±$7,018), compared with $103,678 for Maryland as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 21201?: 21 USPS carrier routes with 13,314 residential and 2,030 business mailboxes (15,347 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 21201?: The closest, measured center to center: 21202 (0.8 mi, Baltimore), 21233 (0.9 mi, Baltimore), 21217 (1.2 mi, Baltimore), 21231 (1.7 mi, Baltimore), 21287 (1.8 mi, Baltimore) and 21223 (1.9 mi, Baltimore).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.