What city is 21212 in?

21212 is a Baltimore, MD mailing address. By land area, 57% lies inside Baltimore and 43% lies inside Towson.

What is the population of 21212?

About 33,974 people (±1,960), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 32,317.

What is the median household income in 21212?

$96,685 (±$6,687), 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 21212?

30 USPS carrier routes with 13,109 residential and 517 business mailboxes (13,623 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 21212?

The closest, measured center to center: 21210 (1.3 mi, Baltimore), 21285 (1.4 mi, Towson), 21239 (1.5 mi, Baltimore), 21252 (1.9 mi, Towson), 21251 (2.2 mi, Baltimore) and 21209 (2.6 mi, Baltimore).

21212 ZIP Code, Baltimore, MD

Q: What county is 21212 in?

21212 is mostly in Baltimore city (57% of its land), with smaller parts in Baltimore County.

21212 is a ZIP code in Baltimore, Maryland — mostly in Baltimore city (57% of its land), with smaller parts in Baltimore County. It covers 4.6 square miles of land. The closest ZIP codes are 21210, 21285 and 21239. 33,974 people live here in 12,971 households. At about 7,408 people per square mile it is built up to city-neighborhood density, and owners and renters are mixed (69% own). Median household income is $96,685, close to the Maryland median of $103,678.

Quick facts

Mailing city: Baltimore, MD
County: Baltimore city County
Land area: 4.6 sq mi
Population: 33,974
Median household income: $96,685
Carrier routes: 30 (13,109 homes)

Key figures

Measure	Value
Residents	33,974
Households	12,971
Median household income	$96,685
Income per person	$60,998
Median age	38.5
Homeowners	68.8%
Median home value	$373,700
Median rent	$1,368
Bachelor's degree or higher	56.8%
Average commute (minutes)	28.7
Households with kids under 18	31.0%
Moved in the past year	11.2%
Below the poverty line	9.1%
Broadband internet	93.2%
Speak a non-English language at home	12.7%

Household income

% of households	Value
<$10K	5.4%
$10–15K	3.5%
$15–25K	3.0%
$25–35K	5.3%
$35–50K	8.3%
$50–75K	12.2%
$75–100K	13.1%
$100–150K	15.1%
$150–200K	9.8%
$200K+	24.2%

Age

% of all residents	Value
<10	13.7%
10–19	14.2%
20–24	6.2%
25–34	10.2%
35–44	14.8%
45–54	13.8%
55–64	10.9%
65–74	9.4%
75+	6.8%

Tenure

% of housing units	Value
Owned, with mortgage	41.6%
Owned outright	23.3%
Rented	29.0%
Vacant	6.1%

Type of building

% of housing units	Value
Detached house	34.9%
Townhome	42.8%
2–4 units	10.5%
5–19 units	7.9%
20+ units	3.8%
Mobile / other	0.0%

Businesses in 21212

514 business establishments with 4,545 employees (ZIP Codes Business Patterns 2023).

Health Care and Social Assistance: 97
Professional, Scientific, and Technical Services: 78
Retail Trade: 71
Accommodation and Food Services: 56
Other Services (except Public Administration): 52
Real Estate and Rental and Leasing: 35
Finance and Insurance: 22
Administrative and Support and Waste Management and Remediation Services: 20

EDDM carrier routes

21212 has 30 USPS carrier routes with 13,109 residential and 517 business mailboxes. Open the EDDM route map.

Carrier routes in 21212

21212 has 30 USPS carrier routes (30 city (C)) with 13,109 residential and 517 business mailboxes. Routes range from 154 homes (C048) to 735 homes (C030); the median route has 417 homes. The Census counted 12,971 households in 21212 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	3
250–499	17
500–749	10
750–999	0
1,000–1,499	0
1,500+	0

Best routes in 21212 for…

Most businesses

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

Route C034 — USPS business mailboxes 113, 288 homes
Route C047 — USPS business mailboxes 112, 418 homes
Route C006 — USPS business mailboxes 72, 416 homes
Route C011 — USPS business mailboxes 70, 702 homes
Route C020 — USPS business mailboxes 41, 322 homes

Select these 5 routes on the route map

Every carrier route in 21212

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	347	21	$154,197	—	—	—
C002	City	211	0	$200,001+	—	—	—
C003	City	306	5	$200,001+	—	—	—
C006	City	416	72	$103,966	—	—	—
C007	City	589	0	$44,663	—	—	—
C008	City	270	2	$200,001+	—	—	—
C011	City	702	70	$53,875	—	—	—
C015	City	405	3	$200,001+	—	—	—
C016	City	385	0	$110,280	—	—	—
C017	City	384	1	$189,224	—	—	—
C019	City	480	0	$71,851	—	—	—
C020	City	322	41	$200,001+	—	—	—
C021	City	619	3	$105,498	—	—	—
C023	City	434	3	$44,663	—	—	—
C024	City	623	7	$154,410	—	—	—
C025	City	661	3	$110,280	—	—	—
C028	City	622	6	$53,875	—	—	—
C030	City	735	1	$177,695	—	—	—
C031	City	258	0	$197,942	—	—	—
C034	City	288	113	$80,189	—	—	—
C035	City	528	0	$177,695	—	—	—
C038	City	419	0	$154,410	—	—	—
C039	City	533	3	$53,023	—	—	—
C041	City	378	0	$154,410	—	—	—
C042	City	248	9	$200,001+	—	—	—
C043	City	392	5	$115,639	—	—	—
C045	City	555	6	$41,110	—	—	—
C046	City	427	30	$80,189	—	—	—
C047	City	418	112	$80,189	—	—	—
C048	City	154	1	$161,219	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 21212 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

21210 — Baltimore city, MD (1.3 mi)
21285 — Towson CDP, MD (1.4 mi)
21239 — Baltimore city, MD (1.5 mi)
21252 — Towson CDP, MD (1.9 mi)
21251 — Baltimore city, MD (2.2 mi)
21209 — Baltimore city, MD (2.6 mi)
21218 — Baltimore city, MD (2.7 mi)
21204 — Towson CDP, MD (2.8 mi)

Areas that include 21212

Baltimore, MD ZIP codes — 28 ZIP codes
Towson, MD ZIP codes — 8 ZIP codes
Baltimore city County ZIP codes — 26 ZIP codes
Baltimore County ZIP codes — 54 ZIP codes
Maryland ZIP code data

Where it ranks

Mail every home in 21212

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) 21212, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 21212 in?: 21212 is a Baltimore, MD mailing address. By land area, 57% lies inside Baltimore and 43% lies inside Towson.
What county is 21212 in?: 21212 is mostly in Baltimore city (57% of its land), with smaller parts in Baltimore County.
What is the population of 21212?: About 33,974 people (±1,960), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 32,317.
What is the median household income in 21212?: $96,685 (±$6,687), 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 21212?: 30 USPS carrier routes with 13,109 residential and 517 business mailboxes (13,623 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 21212?: The closest, measured center to center: 21210 (1.3 mi, Baltimore), 21285 (1.4 mi, Towson), 21239 (1.5 mi, Baltimore), 21252 (1.9 mi, Towson), 21251 (2.2 mi, Baltimore) and 21209 (2.6 mi, Baltimore).

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