Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — ZIP/20660

20660

ZIP 20660 is Morganza, Maryland, in St. Mary's County; area codes 240, 301 and 227; Eastern time.

Type
Standard
Time zone
America/New_York
County
St. Mary's
Metro area
Lexington Park, MD
Population
14
Coordinates
38.3693, -76.7073
☼ Live from 20660 — Morganza, MD

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 20660 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 20660
  • 🔢 Type 20660 into a pocket calculator and turn it upside down: OggOZ — not quite a word, sorry.
  • ➕ As a number, 20,660 = 2 × 2 × 5 × 1033. Its digits add up to 14, a total 1,416 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101000010110100
  • 🏠 Its numerical neighbours: 20659 (Mechanicsville, MD, 3 mi away) and 20661 (Mount Victoria, MD, 11 mi away).
  • 🔄 Backwards, 20660 becomes 06602 — and that is a real ZIP code: Bridgeport, CT, 269 miles away.
  • 👥 18 other ZIP codes are made of exactly the same digits (00662, 02066, 02660, 06026, 06062, 06260, …). The farthest-flung twin is 00662 in Isabela, PR, 1,494 miles away.
  • 🧭 Farther south than 56% of all ZIP codes, and farther east than 83%.
  • 🎯1,174 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 20660 and you would come out at 38.37°S, 103.29°E — 836 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 51m of daylight. Shortest: 9h 29m.
  • 📏 At 0.905 square miles of land, 20660 is bigger than 7% of ZIP codes — about 438 football fields.
🌙 The sky over 20660 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population14This ZIP14
Households14This ZIP14
Housing units14This ZIP14
Bachelor's degree or higher0.0%
Population density15.5 / sq miThis ZIP15.5 / sq mi

Business and tax activity

Business establishments3This ZIP3
Employees8This ZIP8
Annual payroll$261,000This ZIP$261,000

Land area

Land area0.91 sq miThis ZIP0.91 sq mi
Water area0.00 sq mi

ZIP codes near 20660

ZIPCityDistance
20656 Loveville, MD 2.6 mi
20624 Clements, MD 2.6 mi
20659 Mechanicsville, MD 3.0 mi
20621 Chaptico, MD 5.9 mi
20627 Compton, MD 6.4 mi
20609 Avenue, MD 6.5 mi
20635 Helen, MD 6.7 mi
20636 Hollywood, MD 7.7 mi
20606 Abell, MD 7.9 mi
20618 Bushwood, MD 8.2 mi

Find every ZIP code within 10 miles of 20660 →

Questions about this ZIP code

Where is ZIP code 20660?

20660 is in Morganza, Maryland, in St. Mary's County, part of the Lexington Park, MD metropolitan area. Its published point location is 38.3693, -76.7073.

What county is 20660 in?

20660 lies in St. Mary's County.

What area code is 20660?

Morganza uses area codes 240, 301 and 227, from NANPA's telephone records.

What time zone is 20660 in?

20660 uses America/New_York.

How many people live in 20660?

About 14 people live in ZIP code 20660, in 14 households, at 15.5 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 20660?

The closest are 20656 (2.6 mi), 20624 (2.6 mi), 20659 (3 mi), 20621 (5.9 mi) and 20627 (6.4 mi).

Is 20660 a PO Box ZIP code?

20660 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “20660 ZIP Code — Morganza, Maryland (St. Mary's County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/20660

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/20660.json

Underlying data is public domain or openly licensed — sources, vintages and licences.