What city is 21009 in?

21009 is a Abingdon, MD mailing address. By land area, 61% lies inside Bel Air South, 24% lies inside Abingdon and 5% lies inside Edgewood; the rest is outside any Census-defined city or community.

What is the population of 21009?

About 33,679 people (±1,979), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 31,835.

What is the median household income in 21009?

$121,660 (±$7,447), 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 21009?

18 USPS carrier routes with 12,564 residential and 272 business mailboxes (12,836 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 21009?

The closest, measured center to center: 21017 (2.7 mi, Riverside), 21040 (2.9 mi, Edgewood), 21085 (4.2 mi, Joppatowne), 21001 (5 mi, Aberdeen), 21015 (5 mi, Bel Air South) and 21130 (5.1 mi, Perryman).

21009 ZIP Code, Abingdon, MD

21009 is a ZIP code in Abingdon, Maryland in Harford County. It covers 11 square miles of land. The closest ZIP codes are 21017, 21040 and 21085. 33,679 people live here in 12,940 households. At about 2,954 people per square mile it has suburban density, and most homes are owner-occupied (82%). Median household income is $121,660, above the Maryland median of $103,678.

Quick facts

Mailing city: Abingdon, MD
County: Harford County
Land area: 11 sq mi
Population: 33,679
Median household income: $121,660
Carrier routes: 18 (12,564 homes)

Key figures

Measure	Value
Residents	33,679
Households	12,940
Median household income	$121,660
Income per person	$52,073
Median age	36.2
Homeowners	82.4%
Median home value	$357,100
Median rent	$1,838
Bachelor's degree or higher	41.3%
Average commute (minutes)	30.7
Households with kids under 18	31.9%
Moved in the past year	8.6%
Below the poverty line	4.3%
Broadband internet	96.1%
Speak a non-English language at home	9.6%

Household income

% of households	Value
<$10K	2.3%
$10–15K	0.2%
$15–25K	4.7%
$25–35K	2.4%
$35–50K	5.5%
$50–75K	8.5%
$75–100K	12.9%
$100–150K	28.0%
$150–200K	15.9%
$200K+	19.6%

Age

% of all residents	Value
<10	13.2%
10–19	10.2%
20–24	7.1%
25–34	16.7%
35–44	13.8%
45–54	11.5%
55–64	15.3%
65–74	7.8%
75+	4.4%

Tenure

% of housing units	Value
Owned, with mortgage	60.6%
Owned outright	20.0%
Rented	17.0%
Vacant	2.4%

Type of building

% of housing units	Value
Detached house	43.6%
Townhome	40.7%
2–4 units	0.3%
5–19 units	10.3%
20+ units	4.1%
Mobile / other	1.0%

Businesses in 21009

431 business establishments with 5,969 employees (ZIP Codes Business Patterns 2023).

Construction: 63
Health Care and Social Assistance: 57
Retail Trade: 53
Professional, Scientific, and Technical Services: 45
Other Services (except Public Administration): 45
Accommodation and Food Services: 33
Administrative and Support and Waste Management and Remediation Services: 32
Real Estate and Rental and Leasing: 22

EDDM carrier routes

21009 has 18 USPS carrier routes with 12,564 residential and 272 business mailboxes. Open the EDDM route map.

Carrier routes in 21009

21009 has 18 USPS carrier routes (18 rural (R)) with 12,564 residential and 272 business mailboxes. Routes range from 480 homes (R011) to 845 homes (R017); the median route has 691 homes. The Census counted 12,940 households in 21009 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	1
500–749	9
750–999	8
1,000–1,499	0
1,500+	0

Best routes in 21009 for…

Most businesses

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

Route R015 — USPS business mailboxes 60, 844 homes
Route R011 — USPS business mailboxes 52, 480 homes
Route R008 — USPS business mailboxes 44, 818 homes
Route R003 — USPS business mailboxes 31, 553 homes
Route R019 — USPS business mailboxes 30, 619 homes

Select these 5 routes on the route map

Every carrier route in 21009

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
R001	Rural	626	3	$117,163	—	—	—
R002	Rural	703	22	$63,194	—	—	—
R003	Rural	553	31	$54,216	—	—	—
R004	Rural	639	2	$139,240	—	—	—
R005	Rural	806	1	$115,688	—	—	—
R006	Rural	679	1	$54,216	—	—	—
R007	Rural	626	4	$103,839	—	—	—
R008	Rural	818	44	$63,194	—	—	—
R009	Rural	792	3	$111,240	—	—	—
R010	Rural	800	17	$115,688	—	—	—
R011	Rural	480	52	$103,839	—	—	—
R012	Rural	579	0	$115,067	—	—	—
R014	Rural	790	1	$117,163	—	—	—
R015	Rural	844	60	$89,307	—	—	—
R016	Rural	591	0	$147,178	—	—	—
R017	Rural	845	1	$139,941	—	—	—
R018	Rural	774	0	$111,240	—	—	—
R019	Rural	619	30	$156,664	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 21009 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

21017 — Riverside CDP, MD (2.7 mi)
21040 — Edgewood CDP, MD (2.9 mi)
21085 — Joppatowne CDP, MD (4.2 mi)
21001 — Aberdeen city, MD (5 mi)
21015 — Bel Air South CDP, MD (5 mi)
21130 — Perryman CDP, MD (5.1 mi)
21010 — Edgewood CDP, MD (5.6 mi)
21014 — Bel Air North CDP, MD (5.7 mi)

Areas that include 21009

Bel Air South, MD ZIP codes — 3 ZIP codes
Abingdon, MD ZIP codes — 1 ZIP code
Harford County ZIP codes — 22 ZIP codes
Maryland ZIP code data

Where it ranks

Mail every home in 21009

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) 21009, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 21009 in?: 21009 is a Abingdon, MD mailing address. By land area, 61% lies inside Bel Air South, 24% lies inside Abingdon and 5% lies inside Edgewood; the rest is outside any Census-defined city or community.
What county is 21009 in?: 21009 is in Harford County.
What is the population of 21009?: About 33,679 people (±1,979), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 31,835.
What is the median household income in 21009?: $121,660 (±$7,447), 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 21009?: 18 USPS carrier routes with 12,564 residential and 272 business mailboxes (12,836 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 21009?: The closest, measured center to center: 21017 (2.7 mi, Riverside), 21040 (2.9 mi, Edgewood), 21085 (4.2 mi, Joppatowne), 21001 (5 mi, Aberdeen), 21015 (5 mi, Bel Air South) and 21130 (5.1 mi, Perryman).

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