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/20201

20201

ZIP 20201 is in Washington, District of Columbia; area codes 202 and 771; Eastern time. Washington has 271 ZIP codes in all.

Type
No street area
Time zone
America/New_York
Coordinates
38.8933, -77.0146

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 20001, whose figures describe that area — not this ZIP code.

☼ Live from 20201 — Washington, DC

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 20201 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 20201
  • 🔢 Type 20201 into a pocket calculator and turn it upside down: IOZOZ — not quite a word, sorry.
  • ➕ 20201 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 5, a total 55 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100111011101001
  • 🏠 Its numerical neighbours: 20198 (The Plains, VA, 39 mi away) and 20202 (Washington, DC, 0 mi away).
  • 🔄 Backwards, 20201 becomes 10202, which is not a ZIP code at all.
  • 👥 14 other ZIP codes are made of exactly the same digits (01022, 01202, 01220, 02021, 02120, 02201, …). The farthest-flung twin is 02210 in Boston, MA, 394 miles away.
  • 🧭 Farther south than 52% of all ZIP codes, and farther east than 81%.
  • 🎯1,151 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 20201 and you would come out at 38.89°S, 102.99°E — 868 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 54m of daylight. Shortest: 9h 26m.
🌙 The sky over 20201 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments15This ZIP15
Employees153This ZIP153
Annual payroll$7,841,000This ZIP$7,841,000

Land area

ZIP codes near 20201

ZIPCityDistance
20013 Washington, DC 0.0 mi
20026 Washington, DC 0.0 mi
20029 Washington, DC 0.0 mi
20030 Washington, DC 0.0 mi
20033 Washington, DC 0.0 mi
20035 Washington, DC 0.0 mi
20038 Washington, DC 0.0 mi
20039 Washington, DC 0.0 mi
20040 Washington, DC 0.0 mi
20041 Washington, DC 0.0 mi

Find every ZIP code within 10 miles of 20201 →

Questions about this ZIP code

Where is ZIP code 20201?

20201 is in Washington, District of Columbia, in District of Columbia, part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan area. Its published point location is 38.8933, -77.0146.

What county is 20201 in?

20201 lies in District of Columbia.

What area code is 20201?

Washington uses area codes 202 and 771, from NANPA's telephone records.

What time zone is 20201 in?

20201 uses America/New_York.

What ZIP codes are near 20201?

The closest are 20013 (0 mi), 20026 (0 mi), 20029 (0 mi), 20030 (0 mi) and 20033 (0 mi).

Is 20201 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. “20201 ZIP Code — Washington, District of Columbia.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/20201

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/20201.json

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