21047 ZIP Code, Fallston, MD
21047 is a ZIP code in Fallston, Maryland in Harford County. It covers 23 square miles of land. The closest ZIP codes are 21013, 21051 and 21082. 13,852 people live here in 4,810 households. With about 614 people per square mile it is lightly settled, and most homes are owner-occupied (98%). Median household income is $157,500, well above the Maryland median of $103,678; the median age is 45.4, older than most ZIP codes.
Quick facts
- Mailing city: Fallston, MD
- County: Harford County
- Land area: 23 sq mi
- Population: 13,852
- Median household income: $157,500
- Carrier routes: 9 (4,844 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 13,852 |
| Households | 4,810 |
| Median household income | $157,500 |
| Income per person | $64,928 |
| Median age | 45.4 |
| Homeowners | 98.0% |
| Median home value | $552,500 |
| Median rent | $2,315 |
| Bachelor's degree or higher | 55.0% |
| Average commute (minutes) | 45.3 |
| Households with kids under 18 | 32.8% |
| Moved in the past year | 7.0% |
| Below the poverty line | 4.3% |
| Broadband internet | 95.2% |
| Speak a non-English language at home | 10.7% |
Household income
| % of households | Value |
|---|---|
| <$10K | 3.6% |
| $10–15K | 0.5% |
| $15–25K | 2.1% |
| $25–35K | 0.7% |
| $35–50K | 4.6% |
| $50–75K | 6.2% |
| $75–100K | 8.9% |
| $100–150K | 21.0% |
| $150–200K | 17.6% |
| $200K+ | 34.9% |
Age
| % of all residents | Value |
|---|---|
| <10 | 11.0% |
| 10–19 | 13.5% |
| 20–24 | 6.8% |
| 25–34 | 5.1% |
| 35–44 | 13.3% |
| 45–54 | 12.3% |
| 55–64 | 18.1% |
| 65–74 | 12.1% |
| 75+ | 7.7% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 59.0% |
| Owned outright | 37.4% |
| Rented | 1.9% |
| Vacant | 1.8% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 92.8% |
| Townhome | 6.6% |
| 2–4 units | 0.0% |
| 5–19 units | 0.0% |
| 20+ units | 0.0% |
| Mobile / other | 0.6% |
Businesses in 21047
363 business establishments with 3,668 employees (ZIP Codes Business Patterns 2023).
- Construction: 72
- Retail Trade: 42
- Professional, Scientific, and Technical Services: 40
- Other Services (except Public Administration): 39
- Health Care and Social Assistance: 34
- Administrative and Support and Waste Management and Remediation Services: 33
- Accommodation and Food Services: 29
- Real Estate and Rental and Leasing: 23
EDDM carrier routes
21047 has 9 USPS carrier routes with 4,844 residential and 242 business mailboxes. Open the EDDM route map.
Carrier routes in 21047
21047 has 9 USPS carrier routes (9 rural (R)) with 4,844 residential and 242 business mailboxes. Routes range from 125 homes (R011) to 651 homes (R010); the median route has 581 homes. The Census counted 4,810 households in 21047 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 1 |
| 250–499 | 0 |
| 500–749 | 8 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 21047 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route R011 — USPS business mailboxes 98, 125 homes
- Route R007 — USPS business mailboxes 48, 559 homes
- Route R010 — USPS business mailboxes 34, 651 homes
- Route R006 — USPS business mailboxes 31, 546 homes
- Route R002 — USPS business mailboxes 17, 581 homes
Select these 5 routes on the route map
Every carrier route in 21047
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| R002 | Rural | 581 | 17 | $131,416 | — | — | — |
| R003 | Rural | 616 | 4 | $131,416 | — | — | — |
| R005 | Rural | 620 | 6 | $200,001+ | — | — | — |
| R006 | Rural | 546 | 31 | $154,459 | — | — | — |
| R007 | Rural | 559 | 48 | $119,611 | — | — | — |
| R008 | Rural | 597 | 2 | $154,459 | — | — | — |
| R009 | Rural | 549 | 2 | $131,416 | — | — | — |
| R010 | Rural | 651 | 34 | $136,577 | — | — | — |
| R011 | Rural | 125 | 98 | $119,611 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 21047 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
- 21013 — Fallston CDP, MD (3 mi)
- 21051 (3.9 mi)
- 21082 — Pleasant Hills CDP, MD (3.9 mi)
- 21014 — Bel Air North CDP, MD (4.6 mi)
- 21050 — Bel Air North CDP, MD (4.7 mi)
- 21087 — Kingsville CDP, MD (5.5 mi)
- 21084 — Jarrettsville CDP, MD (6.2 mi)
- 21057 — Carney CDP, MD (6.7 mi)
Areas that include 21047
- Fallston, MD ZIP codes — 1 ZIP code
- Pleasant Hills, MD ZIP codes — 3 ZIP codes
- Harford County ZIP codes — 22 ZIP codes
- Maryland ZIP code data
Where it ranks
- No. 2 of 20: highest median household income in Harford County
- No. 3 of 19: highest median home value in Harford County
- No. 2 of 20: highest share of owner-occupied homes in Harford County
- No. 6 of 20: highest median age in Harford County
- No. 2 of 20: fastest population growth in Harford County
Mail every home in 21047
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) 21047, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 21047 in?
- 21047 is a Fallston, MD mailing address. By land area, 57% lies inside Fallston and 10% lies inside Pleasant Hills; the rest is outside any Census-defined city or community.
- What county is 21047 in?
- 21047 is in Harford County.
- What is the population of 21047?
- About 13,852 people (±1,430), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 12,876.
- What is the median household income in 21047?
- $157,500 (±$15,821), 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 21047?
- 9 USPS carrier routes with 4,844 residential and 242 business mailboxes (5,086 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 21047?
- The closest, measured center to center: 21013 (3 mi, Fallston), 21051 (3.9 mi), 21082 (3.9 mi, Pleasant Hills), 21014 (4.6 mi, Bel Air North), 21050 (4.7 mi, Bel Air North) and 21087 (5.5 mi, Kingsville).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.