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zipcodes.pro — ZIP/20678

20678

ZIP 20678 is Prince Frederick, Maryland, in Calvert County; area codes 443, 410 and 667; Eastern time.

Type
Standard
Time zone
America/New_York
County
Calvert
Metro area
Lexington Park, MD
Population
12,752
Coordinates
38.5251, -76.5954
☼ Live from 20678 — Prince Frederick, MD

Weather right now

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Local time: —

Where 20678 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 20678
  • 🔢 Type 20678 into a pocket calculator and turn it upside down: BLgOZ — not quite a word, sorry.
  • ➕ As a number, 20,678 = 2 × 7 × 7 × 211. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101000011000110
  • 🏠 Its numerical neighbours: 20677 (Port Tobacco, MD, 24 mi away) and 20680 (Ridge, MD, 31 mi away).
  • 🔄 Backwards, 20678 becomes 87602, which is not a ZIP code at all.
  • 👥 47 other ZIP codes are made of exactly the same digits (02768, 02876, 06278, 06782, 07628, 07826, …). The farthest-flung twin is 87026 in Laguna, NM, 1,704 miles away.
  • 🧭 Farther south than 55% of all ZIP codes, and farther east than 83%.
  • 🎯1,178 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 20678 and you would come out at 38.53°S, 103.40°E — 836 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 51m of daylight. Shortest: 9h 28m.
  • 📏 At 44.9 square miles of land, 20678 is bigger than 57% of ZIP codes — room for about 34 Central Parks.
🌙 The sky over 20678 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population12,752This ZIP12,752
Households4,858This ZIP4,858
Housing units5,183This ZIP5,183
Median age38.4This ZIP38.4Maryland39.4US 38.9
Median household income$125,732This ZIP$125,732Maryland$103,678US $80,734
Median home value$455,100This ZIP$455,100Maryland$419,900US $332,700
Median gross rent$1,388This ZIP$1,388Maryland$1,705US $1,413
Bachelor's degree or higher30.3%This ZIP30.3%
Mean commute39.9 minThis ZIP39.9 min
Population density284.2 / sq miThis ZIP284.2 / sq mi

Business and tax activity

Business establishments487This ZIP487
Employees7,565This ZIP7,565
Annual payroll$377,323,000This ZIP$377,323,000
Tax returns filed6,460This ZIP6,460
Total adjusted gross income$597,769,000This ZIP$597,769,000

Land area

Land area44.87 sq miThis ZIP44.87 sq mi
Water area9.11 sq miThis ZIP9.11 sq mi

Other place names in 20678

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

ZIP codes near 20678

ZIPCityDistance
20610 Barstow, MD 1.1 mi
20676 Port Republic, MD 3.8 mi
20612 Benedict, MD 4.7 mi
20639 Huntingtown, MD 5.3 mi
20608 Aquasco, MD 6.9 mi
20685 Saint Leonard, MD 7.2 mi
20615 Broomes Island, MD 8.2 mi
20637 Hughesville, MD 8.7 mi
20732 Chesapeake Beach, MD 9.4 mi
20689 Sunderland, MD 10.0 mi

Find every ZIP code within 10 miles of 20678 →

Questions about this ZIP code

Where is ZIP code 20678?

20678 is in Prince Frederick, Maryland, in Calvert County, part of the Lexington Park, MD metropolitan area. Its published point location is 38.5251, -76.5954.

What county is 20678 in?

20678 lies in Calvert County.

What area code is 20678?

Prince Frederick uses area codes 443, 410 and 667, from NANPA's telephone records.

What time zone is 20678 in?

20678 uses America/New_York.

How many people live in 20678?

About 12,752 people live in ZIP code 20678, in 4,858 households, at 284.2 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 20678?

$125,732 a year, against $103,678 across Maryland.

What ZIP codes are near 20678?

The closest are 20610 (1.1 mi), 20676 (3.8 mi), 20612 (4.7 mi), 20639 (5.3 mi) and 20608 (6.9 mi).

Is 20678 a PO Box ZIP code?

20678 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “20678 ZIP Code — Prince Frederick, Maryland (Calvert County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/20678

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