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Where 21017 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 21017 into a pocket calculator and turn it upside down: LIOIZ — not quite a word, sorry.
- ➕ 21017 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 11, a total 714 other ZIP codes share.
- 💾In binary, the way a computer stores it:
101001000011001 - 🏠 Its numerical neighbours: 21015 (Bel Air, MD, 6 mi away) and 21018 (Benson, MD, 8 mi away).
- 🔄 Backwards, 21017 becomes 71012, which is not a ZIP code at all.
- 👥 40 other ZIP codes are made of exactly the same digits (01721, 02117, 02171, 07112, 10172, 10271, …). The farthest-flung twin is 71102 in Shreveport, LA, 1,085 miles away.
- 🧭 Farther north than 52% of all ZIP codes, and farther east than 84%.
- 🎯1,186 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 21017 and you would come out at 39.47°S, 103.77°E — 853 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 57m of daylight. Shortest: 9h 23m.
- 📏 At 2.7 square miles of land, 21017 is bigger than 14% of ZIP codes — room for about 2.0 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 6,648This ZIP6,648 |
|---|---|
| Households | 2,669This ZIP2,669 |
| Housing units | 2,669This ZIP2,669 |
| Median age | 37.6This ZIP37.6Maryland39.4US 38.9 |
| Median household income | $106,831This ZIP$106,831Maryland$103,678US $80,734 |
| Median home value | $258,300This ZIP$258,300Maryland$419,900US $332,700 |
| Median gross rent | $1,789This ZIP$1,789Maryland$1,705US $1,413 |
| Bachelor's degree or higher | 39.2%This ZIP39.2% |
| Mean commute | 30.6 minThis ZIP30.6 min |
| Population density | 2,483.4 / sq miThis ZIP2,483.4 / sq mi |
Business and tax activity
| Business establishments | 135This ZIP135 |
|---|---|
| Employees | 4,721This ZIP4,721 |
| Annual payroll | $346,620,000This ZIP$346,620,000 |
| Tax returns filed | 3,350This ZIP3,350 |
| Total adjusted gross income | $249,050,000This ZIP$249,050,000 |
Land area
| Land area | 2.68 sq miThis ZIP2.68 sq mi |
|---|---|
| Water area | 0.04 sq miThis ZIP0.04 sq mi |
Other place names in 21017
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 21017
| ZIP | City | Distance |
|---|---|---|
21130 | Perryman, MD | 2.4 mi |
21009 | Abingdon, MD | 2.7 mi |
21001 | Aberdeen, MD | 2.7 mi |
21040 | Edgewood, MD | 4.1 mi |
21015 | Bel Air, MD | 5.7 mi |
21028 | Churchville, MD | 6.3 mi |
21010 | Gunpowder, MD | 6.6 mi |
21005 | Aberdeen Proving Ground, MD | 6.6 mi |
21085 | Joppa, MD | 6.8 mi |
21014 | Bel Air, MD | 7.5 mi |
Find every ZIP code within 10 miles of 21017 →
Questions about this ZIP code
Where is ZIP code 21017?
21017 is in Belcamp, Maryland, in Harford County, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.4748, -76.2346.
What county is 21017 in?
21017 lies in Harford County.
What area code is 21017?
Belcamp uses area codes 667, 443 and 410, from NANPA's telephone records.
What time zone is 21017 in?
21017 uses America/New_York.
How many people live in 21017?
About 6,648 people live in ZIP code 21017, in 2,669 households, at 2,483.4 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 21017?
$106,831 a year, against $103,678 across Maryland.
What ZIP codes are near 21017?
The closest are 21130 (2.4 mi), 21009 (2.7 mi), 21001 (2.7 mi), 21040 (4.1 mi) and 21015 (5.7 mi).
Is 21017 a PO Box ZIP code?
21017 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “21017 ZIP Code — Belcamp, Maryland (Harford County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21017
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/21017.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.