21532 ZIP Code, Frostburg, MD
21532 is a ZIP code in Frostburg, Maryland — mostly in Allegany County (54% of its land), with smaller parts in Garrett County. It covers 74 square miles of land. The closest ZIP codes are 21543, 21539 and 21542. 13,647 people live here in 5,511 households. With about 184 people per square mile it is lightly settled, and owners and renters are mixed (64% own). Median household income is $63,690, well below the Maryland median of $103,678.
Quick facts
- Mailing city: Frostburg, MD
- County: Allegany County
- Land area: 74 sq mi
- Population: 13,647
- Median household income: $63,690
- Carrier routes: 12 (6,349 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 13,647 |
| Households | 5,511 |
| Median household income | $63,690 |
| Income per person | $32,801 |
| Median age | 34.8 |
| Homeowners | 63.7% |
| Median home value | $182,400 |
| Median rent | $916 |
| Bachelor's degree or higher | 30.5% |
| Average commute (minutes) | 25.6 |
| Households with kids under 18 | 23.9% |
| Moved in the past year | 14.0% |
| Below the poverty line | 17.0% |
| Broadband internet | 86.7% |
| Speak a non-English language at home | 3.8% |
Household income
| % of households | Value |
|---|---|
| <$10K | 6.1% |
| $10–15K | 7.6% |
| $15–25K | 7.7% |
| $25–35K | 7.1% |
| $35–50K | 10.1% |
| $50–75K | 17.5% |
| $75–100K | 15.3% |
| $100–150K | 18.4% |
| $150–200K | 7.4% |
| $200K+ | 2.8% |
Age
| % of all residents | Value |
|---|---|
| <10 | 8.7% |
| 10–19 | 13.5% |
| 20–24 | 15.6% |
| 25–34 | 12.4% |
| 35–44 | 11.8% |
| 45–54 | 8.7% |
| 55–64 | 12.6% |
| 65–74 | 11.0% |
| 75+ | 5.7% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 35.0% |
| Owned outright | 21.7% |
| Rented | 30.9% |
| Vacant | 12.4% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 69.0% |
| Townhome | 3.3% |
| 2–4 units | 7.3% |
| 5–19 units | 9.6% |
| 20+ units | 5.4% |
| Mobile / other | 5.4% |
Businesses in 21532
240 business establishments with 2,116 employees (ZIP Codes Business Patterns 2023).
- Accommodation and Food Services: 46
- Retail Trade: 37
- Other Services (except Public Administration): 36
- Construction: 22
- Health Care and Social Assistance: 19
- Professional, Scientific, and Technical Services: 14
- Finance and Insurance: 13
- Manufacturing: 12
EDDM carrier routes
21532 has 12 USPS carrier routes with 6,349 residential and 267 business mailboxes. Open the EDDM route map.
Carrier routes in 21532
21532 has 12 USPS carrier routes (7 city (C), 4 rural (R), 1 highway contract (H)) with 6,349 residential and 267 business mailboxes. Routes range from 163 homes (H001) to 772 homes (C003); the median route has 520 homes. The Census counted 5,511 households in 21532 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 1 |
| 250–499 | 5 |
| 500–749 | 5 |
| 750–999 | 1 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 21532 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C007 — USPS business mailboxes 74, 463 homes
- Route C005 — USPS business mailboxes 47, 457 homes
- Route C002 — USPS business mailboxes 28, 435 homes
- Route C003 — USPS business mailboxes 22, 772 homes
- Route R003 — USPS business mailboxes 20, 601 homes
Select these 5 routes on the route map
Every carrier route in 21532
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 481 | 13 | $37,329 | — | — | — |
| C002 | City | 435 | 28 | $30,208 | — | — | — |
| C003 | City | 772 | 22 | $34,864 | — | — | — |
| C004 | City | 675 | 1 | $34,864 | — | — | — |
| C005 | City | 457 | 47 | $26,654 | — | — | — |
| C006 | City | 481 | 9 | $56,116 | — | — | — |
| C007 | City | 463 | 74 | $34,864 | — | — | — |
| H001 | Highway contract | 163 | 14 | $84,609 | — | — | — |
| R001 | Rural | 676 | 18 | $40,971 | — | — | — |
| R002 | Rural | 587 | 6 | $84,609 | — | — | — |
| R003 | Rural | 601 | 20 | $60,853 | — | — | — |
| R004 | Rural | 558 | 15 | $48,489 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 21532 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
- 21543 — Midlothian CDP, MD (1.3 mi)
- 21539 — Lonaconing town, MD (3.9 mi)
- 21542 — Midland town, MD (4.4 mi)
- 21521 — Moscow CDP, MD (7.6 mi)
- 21545 — Mount Savage CDP, MD (7.9 mi)
- 15532 (8.8 mi)
- 15562 (9.1 mi)
- 21557 — Danville CDP, MD (9.2 mi)
Areas that include 21532
- Frostburg, MD ZIP codes — 1 ZIP code
- Finzel, MD ZIP codes — 1 ZIP code
- Eckhart Mines, MD ZIP codes — 1 ZIP code
- Midland, MD ZIP codes — 2 ZIP codes
- Grahamtown, MD ZIP codes — 1 ZIP code
- Midlothian, MD ZIP codes — 2 ZIP codes
- Zihlman, MD ZIP codes — 1 ZIP code
- Gilmore, MD ZIP codes — 1 ZIP code
- Shaft, MD ZIP codes — 1 ZIP code
- Vale Summit, MD ZIP codes — 1 ZIP code
- National, MD ZIP codes — 1 ZIP code
- Klondike, MD ZIP codes — 1 ZIP code
- Carlos, MD ZIP codes — 1 ZIP code
- Woodland, MD ZIP codes — 1 ZIP code
- Ocean, MD ZIP codes — 1 ZIP code
- Clarysville, MD ZIP codes — 1 ZIP code
- Allegany County ZIP codes — 16 ZIP codes
- Garrett County ZIP codes — 12 ZIP codes
- Maryland ZIP code data
Where it ranks
- No. 2 of 9: highest median household income in Allegany County
- No. 3 of 9: highest median home value in Allegany County
- No. 1 of 9: highest share of residents who moved in during the past year in Allegany County
- No. 1 of 9: lowest median age in Allegany County
- No. 5 of 9: fastest population growth in Allegany County
Mail every home in 21532
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) 21532, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 21532 in?
- 21532 is a Frostburg, MD mailing address. By land area, 5% lies inside Finzel, 5% lies inside Frostburg, 2% lies inside Eckhart Mines and 2% lies inside Zihlman; the rest is outside any Census-defined city or community.
- What county is 21532 in?
- 21532 is mostly in Allegany County (54% of its land), with smaller parts in Garrett County.
- What is the population of 21532?
- About 13,647 people (±828), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 13,328.
- What is the median household income in 21532?
- $63,690 (±$5,539), 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 21532?
- 12 USPS carrier routes with 6,349 residential and 267 business mailboxes (6,616 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 21532?
- The closest, measured center to center: 21543 (1.3 mi, Midlothian), 21539 (3.9 mi, Lonaconing), 21542 (4.4 mi, Midland), 21521 (7.6 mi, Moscow), 21545 (7.9 mi, Mount Savage) and 15532 (8.8 mi).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.