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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/20993

20993

ZIP 20993 is in Silver Spring, Maryland, in Montgomery County; Eastern time. Silver Spring has 16 ZIP codes in all.

Type
No street area
Time zone
America/New_York
County
Montgomery
Coordinates
39.0336, -76.9861

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 20903, whose figures describe that area — not this ZIP code.

☼ Live from 20993 — Silver Spring, MD

Weather right now

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NEXRAD radar
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Local time: —

Where 20993 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 20993
  • 🔢 Type 20993 into a pocket calculator and turn it upside down: EGGOZ — not quite a word, sorry.
  • ➕ As a number, 20,993 = 7 × 2999. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101001000000001
  • 🏠 Its numerical neighbours: 20918 (Silver Spring, MD, 4 mi away) and 20997 (Silver Spring, MD, 4 mi away).
  • 🔄 Backwards, 20993 becomes 39902, which is not a ZIP code at all.
  • 👥 22 other ZIP codes are made of exactly the same digits (03299, 09239, 23909, 29039, 29903, 32099, …). The farthest-flung twin is 09239 in APO AE, a military post office, 4,135 miles away.
  • 🧭 Farther south than 50% of all ZIP codes, and farther east than 82%.
  • 🎯1,151 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 20993 and you would come out at 39.03°S, 103.01°E — 871 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 55m of daylight. Shortest: 9h 25m.
🌙 The sky over 20993 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments4This ZIP4
Employees100This ZIP100
Annual payroll$5,275,000This ZIP$5,275,000

Land area

ZIP codes near 20993

ZIPCityDistance
20903 Silver Spring, MD 0.9 mi
20901 Silver Spring, MD 1.5 mi
20904 Silver Spring, MD 2.6 mi
20783 Hyattsville, MD 2.7 mi
20902 Silver Spring, MD 3.1 mi
20787 Hyattsville, MD 3.2 mi
20910 Silver Spring, MD 3.4 mi
20742 College Park, MD 3.6 mi
20740 College Park, MD 3.7 mi
20907 Silver Spring, MD 3.7 mi

Find every ZIP code within 10 miles of 20993 →

Questions about this ZIP code

Where is ZIP code 20993?

20993 is in Silver Spring, Maryland, in Montgomery County, part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan area. Its published point location is 39.0336, -76.9861.

What county is 20993 in?

20993 lies in Montgomery County.

What time zone is 20993 in?

20993 uses America/New_York.

What ZIP codes are near 20993?

The closest are 20903 (0.9 mi), 20901 (1.5 mi), 20904 (2.6 mi), 20783 (2.7 mi) and 20902 (3.1 mi).

Is 20993 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. “20993 ZIP Code — Silver Spring, Maryland (Montgomery County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/20993

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/20993.json

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