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/20773

20773

ZIP 20773 is in Upper Marlboro, Maryland, in Prince George's County; Eastern time. Upper Marlboro has 5 ZIP codes; the others are 20772, 20774, 20775 and 20792.

Type
No street area
Time zone
America/New_York
Coordinates
38.8159, -76.7497

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 20772, whose figures describe that area — not this ZIP code.

☼ Live from 20773 — Upper Marlboro, MD

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Where 20773 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 20773
  • 🔢 Type 20773 into a pocket calculator and turn it upside down: ELLOZ — not quite a word, sorry.
  • ➕ 20773 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101000100100101
  • 🏠 Its numerical neighbours: 20772 (Upper Marlboro, MD, 3 mi away) and 20774 (Upper Marlboro, MD, 4 mi away).
  • 🔄 Backwards, 20773 becomes 37702, which is not a ZIP code at all.
  • 👥 29 other ZIP codes are made of exactly the same digits (07723, 07732, 20737, 23707, 27370, 27703, …). The farthest-flung twin is 77230 in Houston, TX, 1,230 miles away.
  • 🧭 Farther south than 53% of all ZIP codes, and farther east than 83%.
  • 🎯1,166 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 20773 and you would come out at 38.82°S, 103.25°E — 853 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 53m of daylight. Shortest: 9h 27m.
🌙 The sky over 20773 today
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Source: USGS.

Business and tax activity

Business establishments8This ZIP8
Employees35This ZIP35
Annual payroll$1,106,000This ZIP$1,106,000

Land area

ZIP codes near 20773

ZIPCityDistance
20792 Upper Marlboro, MD 0.0 mi
20772 Upper Marlboro, MD 2.6 mi
20774 Upper Marlboro, MD 4.3 mi
20711 Lothian, MD 5.7 mi
20762 Andrews Air Force Base, MD 6.4 mi
20697 Southern Md Facility, MD 7.0 mi
20703 Lanham, MD 7.0 mi
20717 Bowie, MD 7.0 mi
20718 Bowie, MD 7.0 mi
20719 Bowie, MD 7.0 mi

Find every ZIP code within 10 miles of 20773 →

Questions about this ZIP code

Where is ZIP code 20773?

20773 is in Upper Marlboro, Maryland, in Prince George's County, part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan area. Its published point location is 38.8159, -76.7497.

What county is 20773 in?

20773 lies in Prince George's County.

What time zone is 20773 in?

20773 uses America/New_York.

What ZIP codes are near 20773?

The closest are 20792 (0 mi), 20772 (2.6 mi), 20774 (4.3 mi), 20711 (5.7 mi) and 20762 (6.4 mi).

Is 20773 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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Cite this page

zipcodes.pro. “20773 ZIP Code — Upper Marlboro, Maryland (Prince George's County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/20773

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