What city is 21222 in?

21222 is a Dundalk, MD mailing address. By land area, 89% lies inside Dundalk, 6% lies inside Baltimore and 5% lies inside Edgemere.

What is the population of 21222?

About 59,407 people (±2,849), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 59,062.

What is the median household income in 21222?

$64,141 (±$2,813), 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 21222?

40 USPS carrier routes with 23,157 residential and 1,003 business mailboxes (24,160 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 21222?

The closest, measured center to center: 21224 (2.6 mi, Baltimore), 21221 (3.7 mi, Essex), 21219 (4 mi, Edgemere), 21205 (4.5 mi, Baltimore), 21052 (5.1 mi, Edgemere) and 21226 (5.3 mi, Baltimore).

21222 ZIP Code, Dundalk, MD

Q: What county is 21222 in?

21222 is mostly in Baltimore County (94% of its land), with smaller parts in Baltimore city County.

21222 is a ZIP code in Dundalk, Maryland — mostly in Baltimore County (94% of its land), with smaller parts in Baltimore city County. It covers 12 square miles of land. The closest ZIP codes are 21224, 21221 and 21219. 59,407 people live here in 22,512 households, more than in 9 of every 10 Maryland ZIP codes. At about 5,164 people per square mile it is built up to city-neighborhood density, and owners and renters are mixed (65% own). Median household income is $64,141, well below the Maryland median of $103,678.

Quick facts

Mailing city: Dundalk, MD
County: Baltimore County
Land area: 12 sq mi
Population: 59,407
Median household income: $64,141
Carrier routes: 40 (23,157 homes)

Key figures

Measure	Value
Residents	59,407
Households	22,512
Median household income	$64,141
Income per person	$31,970
Median age	36.4
Homeowners	64.9%
Median home value	$215,900
Median rent	$1,444
Bachelor's degree or higher	14.9%
Average commute (minutes)	25.7
Households with kids under 18	30.5%
Moved in the past year	11.7%
Below the poverty line	17.0%
Broadband internet	87.0%
Speak a non-English language at home	15.0%

Household income

% of households	Value
<$10K	6.7%
$10–15K	3.8%
$15–25K	7.9%
$25–35K	9.6%
$35–50K	11.0%
$50–75K	19.6%
$75–100K	13.9%
$100–150K	14.6%
$150–200K	7.2%
$200K+	5.7%

Age

% of all residents	Value
<10	12.6%
10–19	14.2%
20–24	5.6%
25–34	16.0%
35–44	14.3%
45–54	10.9%
55–64	11.2%
65–74	9.5%
75+	5.9%

Tenure

% of housing units	Value
Owned, with mortgage	39.0%
Owned outright	22.6%
Rented	32.4%
Vacant	6.0%

Type of building

% of housing units	Value
Detached house	39.0%
Townhome	43.3%
2–4 units	5.0%
5–19 units	7.9%
20+ units	2.9%
Mobile / other	1.8%

Businesses in 21222

767 business establishments with 10,114 employees (ZIP Codes Business Patterns 2023).

Retail Trade: 130
Construction: 112
Other Services (except Public Administration): 99
Accommodation and Food Services: 88
Health Care and Social Assistance: 66
Transportation and Warehousing: 55
Administrative and Support and Waste Management and Remediation Services: 43
Professional, Scientific, and Technical Services: 38

EDDM carrier routes

21222 has 40 USPS carrier routes with 23,157 residential and 1,003 business mailboxes. Open the EDDM route map.

Carrier routes in 21222

21222 has 40 USPS carrier routes (40 city (C)) with 23,157 residential and 1,003 business mailboxes. Routes range from 296 homes (C045) to 930 homes (C054); the median route has 564 homes. The Census counted 22,512 households in 21222 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	9
500–749	28
750–999	3
1,000–1,499	0
1,500+	0

Best routes in 21222 for…

Most businesses

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

Route C003 — USPS business mailboxes 126, 481 homes
Route C048 — USPS business mailboxes 91, 646 homes
Route C045 — USPS business mailboxes 86, 296 homes
Route C059 — USPS business mailboxes 79, 405 homes
Route C031 — USPS business mailboxes 62, 572 homes

Select these 5 routes on the route map

Every carrier route in 21222

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C002	City	511	1	$55,940	—	—	—
C003	City	481	126	$102,668	—	—	—
C006	City	783	5	$37,688	—	—	—
C008	City	436	3	$102,668	—	—	—
C009	City	730	0	$66,651	—	—	—
C010	City	549	22	$67,087	—	—	—
C011	City	524	7	$67,087	—	—	—
C014	City	465	0	$60,913	—	—	—
C015	City	594	12	$47,812	—	—	—
C016	City	520	62	$51,665	—	—	—
C017	City	581	6	$78,688	—	—	—
C018	City	514	16	$68,748	—	—	—
C019	City	498	6	$77,543	—	—	—
C020	City	434	36	$68,748	—	—	—
C022	City	530	22	$46,142	—	—	—
C023	City	585	0	$74,536	—	—	—
C024	City	556	18	$91,859	—	—	—
C025	City	727	6	$72,788	—	—	—
C026	City	650	54	$47,812	—	—	—
C027	City	637	18	$55,469	—	—	—
C029	City	723	12	$51,026	—	—	—
C031	City	572	62	$72,788	—	—	—
C032	City	586	10	$72,788	—	—	—
C036	City	648	1	$55,940	—	—	—
C037	City	554	0	$37,688	—	—	—
C039	City	637	7	$91,859	—	—	—
C041	City	658	1	$102,668	—	—	—
C042	City	657	31	$83,293	—	—	—
C043	City	475	30	$55,469	—	—	—
C044	City	442	50	$67,087	—	—	—
C045	City	296	86	$72,788	—	—	—
C047	City	541	7	$48,106	—	—	—
C048	City	646	91	$72,788	—	—	—
C050	City	552	27	$54,385	—	—	—
C051	City	776	2	$68,853	—	—	—
C053	City	586	39	$60,913	—	—	—
C054	City	930	1	$35,974	—	—	—
C055	City	626	46	$25,238	—	—	—
C057	City	542	1	$35,974	—	—	—
C059	City	405	79	$97,217	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 21222 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

21224 — Baltimore city, MD (2.6 mi)
21221 — Essex CDP, MD (3.7 mi)
21219 — Edgemere CDP, MD (4 mi)
21205 — Baltimore city, MD (4.5 mi)
21052 — Edgemere CDP, MD (5.1 mi)
21226 — Baltimore city, MD (5.3 mi)
21237 — Rosedale CDP, MD (5.3 mi)
21231 — Baltimore city, MD (5.4 mi)

Areas that include 21222

Dundalk, MD ZIP codes — 2 ZIP codes
Baltimore County ZIP codes — 54 ZIP codes
Maryland ZIP code data

Where it ranks

Mail every home in 21222

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.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 21222, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 21222 in?: 21222 is a Dundalk, MD mailing address. By land area, 89% lies inside Dundalk, 6% lies inside Baltimore and 5% lies inside Edgemere.
What county is 21222 in?: 21222 is mostly in Baltimore County (94% of its land), with smaller parts in Baltimore city County.
What is the population of 21222?: About 59,407 people (±2,849), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 59,062.
What is the median household income in 21222?: $64,141 (±$2,813), 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 21222?: 40 USPS carrier routes with 23,157 residential and 1,003 business mailboxes (24,160 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 21222?: The closest, measured center to center: 21224 (2.6 mi, Baltimore), 21221 (3.7 mi, Essex), 21219 (4 mi, Edgemere), 21205 (4.5 mi, Baltimore), 21052 (5.1 mi, Edgemere) and 21226 (5.3 mi, Baltimore).

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