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Where 21048 is
Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.
- 🔢 Type 21048 into a pocket calculator and turn it upside down: BhOIZ — not quite a word, sorry.
- ➕ As a number, 21,048 = 2 × 2 × 2 × 3 × 877. Its digits add up to 15, a total 1,657 other ZIP codes share.
- 💾In binary, the way a computer stores it:
101001000111000 - 🏠 Its numerical neighbours: 21047 (Fallston, MD, 26 mi away) and 21050 (Forest Hill, MD, 29 mi away).
- 🔄 Backwards, 21048 becomes 84012, which is not a ZIP code at all.
- 👥 58 other ZIP codes are made of exactly the same digits (01824, 01842, 02148, 02184, 02481, 02814, …). The farthest-flung twin is 84120 in West Valley City, UT, 1,843 miles away.
- 🧭 Farther north than 52% of all ZIP codes, and farther east than 82%.
- 🎯1,149 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 21048 and you would come out at 39.50°S, 103.08°E — 885 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 58m of daylight. Shortest: 9h 23m.
- 📏 At 27.3 square miles of land, 21048 is bigger than 44% of ZIP codes — room for about 21 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 10,481This ZIP10,481 |
|---|---|
| Households | 3,723This ZIP3,723 |
| Housing units | 3,824This ZIP3,824 |
| Median age | 41.7This ZIP41.7Maryland39.4US 38.9 |
| Median household income | $131,921This ZIP$131,921Maryland$103,678US $80,734 |
| Median home value | $459,000This ZIP$459,000Maryland$419,900US $332,700 |
| Bachelor's degree or higher | 47.3%This ZIP47.3% |
| Mean commute | 38.7 minThis ZIP38.7 min |
| Population density | 384.5 / sq miThis ZIP384.5 / sq mi |
Business and tax activity
| Business establishments | 278This ZIP278 |
|---|---|
| Employees | 2,368This ZIP2,368 |
| Annual payroll | $137,451,000This ZIP$137,451,000 |
| Tax returns filed | 5,420This ZIP5,420 |
| Total adjusted gross income | $646,182,000This ZIP$646,182,000 |
Land area
| Land area | 27.26 sq miThis ZIP27.26 sq mi |
|---|---|
| Water area | 1.39 sq miThis ZIP1.39 sq mi |
Other place names in 21048
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 21048
| ZIP | City | Distance |
|---|---|---|
21157 | Westminster, MD | 4.6 mi |
21136 | Reisterstown, MD | 6.0 mi |
21071 | Glyndon, MD | 6.2 mi |
21020 | Boring, MD | 6.5 mi |
21784 | Sykesville, MD | 7.3 mi |
21155 | Upperco, MD | 8.1 mi |
21117 | Owings Mills, MD | 9.4 mi |
21776 | New Windsor, MD | 9.4 mi |
21074 | Hampstead, MD | 9.5 mi |
21023 | Butler, MD | 10.0 mi |
Find every ZIP code within 10 miles of 21048 →
Questions about this ZIP code
Where is ZIP code 21048?
21048 is in Finksburg, Maryland, in Carroll County, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.5004, -76.9245.
What county is 21048 in?
21048 lies in Carroll County.
What area code is 21048?
Finksburg uses area codes 443, 410 and 667, from NANPA's telephone records.
What time zone is 21048 in?
21048 uses America/New_York.
How many people live in 21048?
About 10,481 people live in ZIP code 21048, in 3,723 households, at 384.5 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What is the median household income in 21048?
$131,921 a year, against $103,678 across Maryland.
What ZIP codes are near 21048?
The closest are 21157 (4.6 mi), 21136 (6 mi), 21071 (6.2 mi), 21020 (6.5 mi) and 21784 (7.3 mi).
Is 21048 a PO Box ZIP code?
21048 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “21048 ZIP Code — Finksburg, Maryland (Carroll County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21048
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/21048.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.