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/20799

20799

ZIP 20799 is in Capitol Heights, Maryland, in Prince George's County; Eastern time. Capitol Heights has 5 ZIP codes; the others are 20731, 20743, 20790 and 20791.

Type
No street area
Time zone
America/New_York
Coordinates
38.8336, -76.8777

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 20747, whose figures describe that area — not this ZIP code.

☼ Live from 20799 — Capitol Heights, MD

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 20799 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 20799
  • 🔢 Type 20799 into a pocket calculator and turn it upside down: GGLOZ — not quite a word, sorry.
  • ➕ As a number, 20,799 = 3 × 3 × 2311. Its digits add up to 27, a total 1,806 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101000100111111
  • 🏠 Its numerical neighbours: 20797 (Southern Md Facility, MD, 0 mi away) and 20810 (Bethesda, MD, 16 mi away).
  • 🔄 Backwards, 20799 becomes 99702 — and that is a real ZIP code: Eielson Afb, AK, 3,259 miles away.
  • 👥 23 other ZIP codes are made of exactly the same digits (09279, 09729, 20997, 27099, 27909, 29079, …). The farthest-flung twin is 09279 in APO AE, a military post office, 4,111 miles away.
  • 🧭 Farther south than 52% of all ZIP codes, and farther east than 82%.
  • 🎯1,159 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 20799 and you would come out at 38.83°S, 103.12°E — 859 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 53m of daylight. Shortest: 9h 26m.
🌙 The sky over 20799 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Land area

ZIP codes near 20799

ZIPCityDistance
20697 Southern Md Facility, MD 0.0 mi
20703 Lanham, MD 0.0 mi
20717 Bowie, MD 0.0 mi
20718 Bowie, MD 0.0 mi
20719 Bowie, MD 0.0 mi
20738 Riverdale, MD 0.0 mi
20741 College Park, MD 0.0 mi
20749 Fort Washington, MD 0.0 mi
20753 District Heights, MD 0.0 mi
20775 Upper Marlboro, MD 0.0 mi

Find every ZIP code within 10 miles of 20799 →

Questions about this ZIP code

Where is ZIP code 20799?

20799 is in Capitol Heights, Maryland, in Prince George's County, part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan area. Its published point location is 38.8336, -76.8777.

What county is 20799 in?

20799 lies in Prince George's County.

What time zone is 20799 in?

20799 uses America/New_York.

What ZIP codes are near 20799?

The closest are 20697 (0 mi), 20703 (0 mi), 20717 (0 mi), 20718 (0 mi) and 20719 (0 mi).

Is 20799 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.

Download or cite

Cite this page

zipcodes.pro. “20799 ZIP Code — Capitol Heights, Maryland (Prince George's County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/20799

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/20799.json

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