What city is 21015 in?

21015 is a Bel Air, MD mailing address. By land area, 35% lies inside Bel Air South and 6% lies inside Bel Air North; the rest is outside any Census-defined city or community.

What is the population of 21015?

About 30,013 people (±1,707), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 30,400.

What is the median household income in 21015?

$137,281 (±$11,402), 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 21015?

20 USPS carrier routes with 12,380 residential and 505 business mailboxes (12,885 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 21015?

The closest, measured center to center: 21028 (2.7 mi), 21014 (3.2 mi, Bel Air North), 21009 (5 mi, Bel Air South), 21001 (5.6 mi, Aberdeen), 21017 (5.7 mi, Riverside) and 21050 (6 mi, Bel Air North).

21015 ZIP Code, Bel Air, MD

21015 is a ZIP code in Bel Air, Maryland in Harford County. It covers 31 square miles of land. The closest ZIP codes are 21028, 21014 and 21009. 30,013 people live here in 11,012 households. With about 960 people per square mile it is lightly settled, and most homes are owner-occupied (89%). Median household income is $137,281, above the Maryland median of $103,678.

Quick facts

Mailing city: Bel Air, MD
County: Harford County
Land area: 31 sq mi
Population: 30,013
Median household income: $137,281
Carrier routes: 20 (12,380 homes)

Key figures

Measure	Value
Residents	30,013
Households	11,012
Median household income	$137,281
Income per person	$58,462
Median age	40.4
Homeowners	89.1%
Median home value	$443,400
Median rent	$1,752
Bachelor's degree or higher	53.4%
Average commute (minutes)	31.6
Households with kids under 18	38.3%
Moved in the past year	5.3%
Below the poverty line	5.0%
Broadband internet	94.9%
Speak a non-English language at home	8.5%

Household income

% of households	Value
<$10K	2.8%
$10–15K	0.9%
$15–25K	2.4%
$25–35K	3.1%
$35–50K	6.4%
$50–75K	12.4%
$75–100K	6.3%
$100–150K	20.0%
$150–200K	16.4%
$200K+	29.4%

Age

% of all residents	Value
<10	12.9%
10–19	14.9%
20–24	5.0%
25–34	8.3%
35–44	14.3%
45–54	14.6%
55–64	13.9%
65–74	9.7%
75+	6.3%

Tenure

% of housing units	Value
Owned, with mortgage	62.4%
Owned outright	23.9%
Rented	10.3%
Vacant	3.4%

Type of building

% of housing units	Value
Detached house	65.7%
Townhome	20.3%
2–4 units	0.5%
5–19 units	9.7%
20+ units	2.6%
Mobile / other	1.1%

Businesses in 21015

624 business establishments with 6,216 employees (ZIP Codes Business Patterns 2023).

Health Care and Social Assistance: 99
Professional, Scientific, and Technical Services: 80
Retail Trade: 71
Other Services (except Public Administration): 68
Construction: 61
Accommodation and Food Services: 60
Finance and Insurance: 37
Real Estate and Rental and Leasing: 37

EDDM carrier routes

21015 has 20 USPS carrier routes with 12,380 residential and 505 business mailboxes. Open the EDDM route map.

Carrier routes in 21015

21015 has 20 USPS carrier routes (4 city (C), 16 rural (R)) with 12,380 residential and 505 business mailboxes. Routes range from 443 homes (R008) to 1,014 homes (R025); the median route has 593 homes. The Census counted 11,012 households in 21015 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	2
500–749	15
750–999	2
1,000–1,499	1
1,500+	0

Best routes in 21015 for…

Most businesses

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

Route R020 — USPS business mailboxes 183, 714 homes
Route R017 — USPS business mailboxes 90, 520 homes
Route R001 — USPS business mailboxes 60, 483 homes
Route R025 — USPS business mailboxes 42, 1,014 homes
Route R019 — USPS business mailboxes 37, 540 homes

Select these 5 routes on the route map

Every carrier route in 21015

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C006	City	507	2	$159,844	—	—	—
C020	City	637	0	$61,172	—	—	—
C028	City	776	17	$61,172	—	—	—
C033	City	595	0	$85,502	—	—	—
R001	Rural	483	60	$90,886	—	—	—
R002	Rural	542	34	$104,039	—	—	—
R003	Rural	580	0	$171,248	—	—	—
R005	Rural	620	0	$105,106	—	—	—
R006	Rural	622	1	$200,001+	—	—	—
R008	Rural	443	31	$104,039	—	—	—
R011	Rural	561	0	$189,469	—	—	—
R012	Rural	532	1	$171,280	—	—	—
R014	Rural	592	3	$171,248	—	—	—
R015	Rural	636	2	$139,941	—	—	—
R017	Rural	520	90	$139,240	—	—	—
R019	Rural	540	37	$159,844	—	—	—
R020	Rural	714	183	$139,941	—	—	—
R021	Rural	593	0	$200,001+	—	—	—
R023	Rural	873	2	$104,039	—	—	—
R025	Rural	1,014	42	$105,106	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 21015 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

21028 (2.7 mi)
21014 — Bel Air North CDP, MD (3.2 mi)
21009 — Bel Air South CDP, MD (5 mi)
21001 — Aberdeen city, MD (5.6 mi)
21017 — Riverside CDP, MD (5.7 mi)
21050 — Bel Air North CDP, MD (6 mi)
21130 — Perryman CDP, MD (7.3 mi)
21034 — Darlington CDP, MD (7.6 mi)

Areas that include 21015

Bel Air South, MD ZIP codes — 3 ZIP codes
Bel Air North, MD ZIP codes — 3 ZIP codes
Bel Air, MD ZIP codes — 2 ZIP codes
Harford County ZIP codes — 22 ZIP codes
Maryland ZIP code data

Where it ranks

Mail every home in 21015

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) 21015, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 21015 in?: 21015 is a Bel Air, MD mailing address. By land area, 35% lies inside Bel Air South and 6% lies inside Bel Air North; the rest is outside any Census-defined city or community.
What county is 21015 in?: 21015 is in Harford County.
What is the population of 21015?: About 30,013 people (±1,707), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 30,400.
What is the median household income in 21015?: $137,281 (±$11,402), 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 21015?: 20 USPS carrier routes with 12,380 residential and 505 business mailboxes (12,885 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 21015?: The closest, measured center to center: 21028 (2.7 mi), 21014 (3.2 mi, Bel Air North), 21009 (5 mi, Bel Air South), 21001 (5.6 mi, Aberdeen), 21017 (5.7 mi, Riverside) and 21050 (6 mi, Bel Air North).

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