What city is 21209 in?

21209 is a Baltimore, MD mailing address. By land area, 44% lies inside Baltimore, 40% lies inside Pikesville and 16% lies inside Towson.

What is the population of 21209?

About 30,126 people (±2,063), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 28,659.

What is the median household income in 21209?

$91,437 (±$8,548), 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 21209?

25 USPS carrier routes with 12,261 residential and 472 business mailboxes (12,722 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 21209?

The closest, measured center to center: 21210 (1.9 mi, Baltimore), 21215 (2.3 mi, Baltimore), 21212 (2.6 mi, Baltimore), 21285 (2.6 mi, Towson), 21204 (2.9 mi, Towson) and 21252 (3 mi, Towson).

21209 ZIP Code, Baltimore, MD

Q: What county is 21209 in?

21209 is mostly in Baltimore County (56% of its land), with smaller parts in Baltimore city County.

21209 is a ZIP code in Baltimore, Maryland — mostly in Baltimore County (56% of its land), with smaller parts in Baltimore city County. It covers 6.5 square miles of land. The closest ZIP codes are 21210, 21215 and 21212. 30,126 people live here in 11,621 households. At about 4,665 people per square mile it is built up to city-neighborhood density, and owners and renters are mixed (57% own). Median household income is $91,437, below the Maryland median of $103,678.

Quick facts

Mailing city: Baltimore, MD
County: Baltimore County
Land area: 6.5 sq mi
Population: 30,126
Median household income: $91,437
Carrier routes: 25 (12,261 homes)

Key figures

Measure	Value
Residents	30,126
Households	11,621
Median household income	$91,437
Income per person	$53,449
Median age	35.6
Homeowners	57.5%
Median home value	$440,800
Median rent	$1,655
Bachelor's degree or higher	60.7%
Average commute (minutes)	24
Households with kids under 18	32.4%
Moved in the past year	8.8%
Below the poverty line	6.7%
Broadband internet	89.0%
Speak a non-English language at home	20.9%

Household income

% of households	Value
<$10K	6.5%
$10–15K	2.1%
$15–25K	4.5%
$25–35K	6.2%
$35–50K	9.1%
$50–75K	11.4%
$75–100K	13.1%
$100–150K	16.0%
$150–200K	10.1%
$200K+	21.0%

Age

% of all residents	Value
<10	15.7%
10–19	15.8%
20–24	3.0%
25–34	14.5%
35–44	12.0%
45–54	11.2%
55–64	9.7%
65–74	9.6%
75+	8.5%

Tenure

% of housing units	Value
Owned, with mortgage	36.6%
Owned outright	19.1%
Rented	40.5%
Vacant	3.7%

Type of building

% of housing units	Value
Detached house	31.9%
Townhome	16.3%
2–4 units	7.1%
5–19 units	27.4%
20+ units	16.5%
Mobile / other	0.8%

Businesses in 21209

777 business establishments with 9,386 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 153
Health Care and Social Assistance: 144
Real Estate and Rental and Leasing: 74
Retail Trade: 67
Other Services (except Public Administration): 63
Finance and Insurance: 61
Accommodation and Food Services: 47
Administrative and Support and Waste Management and Remediation Services: 42

EDDM carrier routes

21209 has 25 USPS carrier routes with 12,261 residential and 472 business mailboxes. Open the EDDM route map.

Carrier routes in 21209

21209 has 25 USPS carrier routes (25 city (C)) with 12,261 residential and 472 business mailboxes. Routes range from 120 homes (C005) to 995 homes (C013); the median route has 458 homes. The Census counted 11,621 households in 21209 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	1
250–499	16
500–749	5
750–999	3
1,000–1,499	0
1,500+	0

Best routes in 21209 for…

Most businesses

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

Route C005 — USPS business mailboxes 144, 120 homes
Route C040 — USPS business mailboxes 82, 392 homes
Route C006 — USPS business mailboxes 61, 473 homes
Route C041 — USPS business mailboxes 45, 317 homes
Route C016 — USPS business mailboxes 34, 324 homes

Select these 5 routes on the route map

Every carrier route in 21209

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	382	2	$68,528	—	—	—
C002	City	364	1	$158,699	—	—	—
C004	City	654	27	$57,904	—	—	—
C005	City	120	144	$154,197	—	—	—
C006	City	473	61	$103,115	—	—	—
C008	City	418	0	$116,765	—	—	—
C009	City	458	2	$59,346	—	—	—
C011	City	487	0	$116,765	—	—	—
C013	City	995	2	$155,399	—	—	—
C014	City	527	3	$191,078	—	—	—
C015	City	485	27	$80,698	—	—	—
C016	City	324	34	$155,399	—	—	—
C018	City	356	1	$123,846	—	—	—
C020	City	887	9	$67,444	—	—	—
C021	City	376	4	$200,001+	—	—	—
C022	City	353	2	$103,569	—	—	—
C023	City	479	3	$100,000	—	—	—
C024	City	535	2	$123,846	—	—	—
C025	City	814	4	$66,786	—	—	—
C026	City	726	0	$67,444	—	—	—
C027	City	451	0	$188,511	—	—	—
C036	City	533	15	$155,399	—	—	—
C040	City	392	82	$103,569	—	—	—
C041	City	317	45	$200,001+	—	—	—
C042	City	355	2	$123,846	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 21209 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 (1.9 mi)
21215 — Baltimore city, MD (2.3 mi)
21212 — Baltimore city, MD (2.6 mi)
21285 — Towson CDP, MD (2.6 mi)
21204 — Towson CDP, MD (2.9 mi)
21252 — Towson CDP, MD (3 mi)
21208 — Pikesville CDP, MD (3.3 mi)
21211 — Baltimore city, MD (3.4 mi)

Areas that include 21209

Baltimore, MD ZIP codes — 28 ZIP codes
Towson, MD ZIP codes — 8 ZIP codes
Pikesville, MD ZIP codes — 3 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 21209

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) 21209, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 21209 in?: 21209 is a Baltimore, MD mailing address. By land area, 44% lies inside Baltimore, 40% lies inside Pikesville and 16% lies inside Towson.
What county is 21209 in?: 21209 is mostly in Baltimore County (56% of its land), with smaller parts in Baltimore city County.
What is the population of 21209?: About 30,126 people (±2,063), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 28,659.
What is the median household income in 21209?: $91,437 (±$8,548), 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 21209?: 25 USPS carrier routes with 12,261 residential and 472 business mailboxes (12,722 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 21209?: The closest, measured center to center: 21210 (1.9 mi, Baltimore), 21215 (2.3 mi, Baltimore), 21212 (2.6 mi, Baltimore), 21285 (2.6 mi, Towson), 21204 (2.9 mi, Towson) and 21252 (3 mi, Towson).

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