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zipcodes.pro — ZIP/21078

21078

ZIP 21078 is Havre De Grace, Maryland, in Harford County; area codes 667, 443 and 410; Eastern time.

Type
Standard
Time zone
America/New_York
County
Harford
Population
20,030
Coordinates
39.5592, -76.1412
☼ Live from 21078 — Havre De Grace, MD

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Where 21078 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.

★ Weird and wonderful facts about 21078
  • 🔢 Type 21078 into a pocket calculator and turn it upside down: BLOIZ — not quite a word, sorry.
  • ➕ As a number, 21,078 = 2 × 3 × 3 × 1171. Its digits add up to 18, a total 2,332 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101001001010110
  • 🏠 Its numerical neighbours: 21077 (Harmans, MD, 41 mi away) and 21082 (Hydes, MD, 19 mi away).
  • 🔄 Backwards, 21078 becomes 87012 — and that is a real ZIP code: Coyote, NM, 1,673 miles away.
  • 👥 67 other ZIP codes are made of exactly the same digits (01827, 02187, 02718, 02817, 02871, 07821, …). The farthest-flung twin is 87021 in Milan, NM, 1,759 miles away.
  • 🧭 Farther north than 53% of all ZIP codes, and farther east than 84%.
  • 🎯1,190 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21078 and you would come out at 39.56°S, 103.86°E — 853 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 58m of daylight. Shortest: 9h 22m.
  • 📏 At 30.1 square miles of land, 21078 is bigger than 46% of ZIP codes — room for about 23 Central Parks.
🌙 The sky over 21078 today
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🌋 Shake report
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Source: USGS.

People and housing

Population20,030This ZIP20,030
Households8,476This ZIP8,476
Housing units8,869This ZIP8,869
Median age46.8This ZIP46.8Maryland39.4US 38.9
Median household income$106,667This ZIP$106,667Maryland$103,678US $80,734
Median home value$385,600This ZIP$385,600Maryland$419,900US $332,700
Median gross rent$1,433This ZIP$1,433Maryland$1,705US $1,413
Bachelor's degree or higher41.6%This ZIP41.6%
Mean commute28.4 minThis ZIP28.4 min
Population density665.4 / sq miThis ZIP665.4 / sq mi

Business and tax activity

Business establishments397This ZIP397
Employees5,525This ZIP5,525
Annual payroll$325,587,000This ZIP$325,587,000
Tax returns filed10,230This ZIP10,230
Total adjusted gross income$932,707,000This ZIP$932,707,000

Land area

Land area30.10 sq miThis ZIP30.10 sq mi
Water area5.35 sq miThis ZIP5.35 sq mi

Other place names in 21078

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 21078

ZIPCityDistance
21902 Perry Point, MD 4.2 mi
21001 Aberdeen, MD 4.9 mi
21903 Perryville, MD 5.2 mi
21904 Port Deposit, MD 5.5 mi
21028 Churchville, MD 5.8 mi
21005 Aberdeen Proving Ground, MD 6.2 mi
21130 Perryman, MD 6.4 mi
21034 Darlington, MD 7.1 mi
21017 Belcamp, MD 7.7 mi
21917 Colora, MD 8.1 mi

Find every ZIP code within 10 miles of 21078 →

Questions about this ZIP code

Where is ZIP code 21078?

21078 is in Havre De Grace, Maryland, in Harford County, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.5592, -76.1412.

What county is 21078 in?

21078 lies in Harford County.

What area code is 21078?

Havre De Grace uses area codes 667, 443 and 410, from NANPA's telephone records.

What time zone is 21078 in?

21078 uses America/New_York.

How many people live in 21078?

About 20,030 people live in ZIP code 21078, in 8,476 households, at 665.4 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 21078?

$106,667 a year, against $103,678 across Maryland.

What ZIP codes are near 21078?

The closest are 21902 (4.2 mi), 21001 (4.9 mi), 21903 (5.2 mi), 21904 (5.5 mi) and 21028 (5.8 mi).

Is 21078 a PO Box ZIP code?

21078 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21078 ZIP Code — Havre De Grace, Maryland (Harford County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21078

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