21077
ZIP 21077 is Harmans, Maryland, in Anne Arundel County; area codes 410, 443 and 667; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- Anne Arundel
- Metro area
- Baltimore-Columbia-Towson, MD
- Population
- 63
- Coordinates
- 39.1584, -76.6995
Weather right now
Asking the National Weather Service…
Where 21077 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 21077 into a pocket calculator and turn it upside down: LLOIZ — not quite a word, sorry.
- ➕ As a number, 21,077 = 7 × 3011. Its digits add up to 17, a total 2,133 other ZIP codes share.
- 💾In binary, the way a computer stores it:
101001001010101 - 🏠 Its numerical neighbours: 21076 (Hanover, MD, 2 mi away) and 21078 (Havre De Grace, MD, 41 mi away).
- 🔄 Backwards, 21077 becomes 77012 — and that is a real ZIP code: Houston, TX, 1,240 miles away.
- 👥 37 other ZIP codes are made of exactly the same digits (01772, 02717, 02771, 07712, 07721, 10277, …). The farthest-flung twin is 77021 in Houston, TX, 1,244 miles away.
- 🧭 Farther north than 50% of all ZIP codes, and farther east than 83%.
- 🎯1,165 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 21077 and you would come out at 39.16°S, 103.30°E — 863 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 55m of daylight. Shortest: 9h 25m.
- 📏 At 0.439 square miles of land, 21077 is bigger than 5% of ZIP codes — about 212 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 63This ZIP63 |
|---|---|
| Households | 35This ZIP35 |
| Housing units | 35This ZIP35 |
| Median age | 29.9This ZIP29.9Maryland39.4US 38.9 |
| Bachelor's degree or higher | 44.4%This ZIP44.4% |
| Population density | 143.5 / sq miThis ZIP143.5 / sq mi |
Business and tax activity
| Business establishments | 23This ZIP23 |
|---|---|
| Employees | 1,107This ZIP1,107 |
| Annual payroll | $83,428,000This ZIP$83,428,000 |
| Tax returns filed | 160This ZIP160 |
| Total adjusted gross income | $13,116,000This ZIP$13,116,000 |
Land area
| Land area | 0.44 sq miThis ZIP0.44 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 21077
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 21077
| ZIP | City | Distance |
|---|---|---|
21076 | Hanover, MD | 1.6 mi |
21240 | Baltimore, MD | 1.9 mi |
21144 | Severn, MD | 2.9 mi |
21061 | Glen Burnie, MD | 3.6 mi |
21090 | Linthicum Heights, MD | 4.0 mi |
21075 | Elkridge, MD | 4.1 mi |
20755 | Fort George G Meade, MD | 4.8 mi |
20701 | Annapolis Junction, MD | 5.1 mi |
20794 | Jessup, MD | 5.1 mi |
21227 | Halethorpe, MD | 5.7 mi |
Find every ZIP code within 10 miles of 21077 →
Questions about this ZIP code
Where is ZIP code 21077?
21077 is in Harmans, Maryland, in Anne Arundel County, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.1584, -76.6995.
What county is 21077 in?
21077 lies in Anne Arundel County.
What area code is 21077?
Harmans uses area codes 410, 443 and 667, from NANPA's telephone records.
What time zone is 21077 in?
21077 uses America/New_York.
How many people live in 21077?
About 63 people live in ZIP code 21077, in 35 households, at 143.5 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What ZIP codes are near 21077?
The closest are 21076 (1.6 mi), 21240 (1.9 mi), 21144 (2.9 mi), 21061 (3.6 mi) and 21090 (4 mi).
Is 21077 a PO Box ZIP code?
21077 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “21077 ZIP Code — Harmans, Maryland (Anne Arundel County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21077
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/21077.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.