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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/20901

20901

ZIP 20901 is in Silver Spring, Maryland, in Montgomery County; Eastern time. Silver Spring has 16 ZIP codes in all.

Type
Standard
Time zone
America/New_York
County
Montgomery
Population
36,435
Coordinates
39.0215, -77.0098
☼ Live from 20901 — Silver Spring, MD

Weather right now

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NEXRAD radar
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Local time: —

Where 20901 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 20901
  • 🔢 Type 20901 into a pocket calculator and turn it upside down: IOGOZ — not quite a word, sorry.
  • ➕ As a number, 20,901 = 3 × 6967. Its digits add up to 12, a total 940 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101000110100101
  • 🏠 Its numerical neighbours: 20899 (Gaithersburg, MD, 14 mi away) and 20902 (Silver Spring, MD, 2 mi away).
  • 🔄 Backwards, 20901 becomes 10902, which is not a ZIP code at all.
  • 👥 34 other ZIP codes are made of exactly the same digits (00912, 00921, 01029, 01092, 01902, 02019, …). The farthest-flung twin is 09102 in APO AE, a military post office, 4,072 miles away.
  • 🧭 Farther south than 50% of all ZIP codes, and farther east than 82%.
  • 🎯1,150 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 20901 and you would come out at 39.02°S, 102.99°E — 872 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 55m of daylight. Shortest: 9h 25m.
  • 📏 At 5.3 square miles of land, 20901 is bigger than 20% of ZIP codes — room for about 4.1 Central Parks.
🌙 The sky over 20901 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population36,435This ZIP36,435
Households13,114This ZIP13,114
Housing units13,495This ZIP13,495
Median age39.5This ZIP39.5Maryland39.4US 38.9
Median household income$131,386This ZIP$131,386Maryland$103,678US $80,734
Median home value$589,800This ZIP$589,800Maryland$419,900US $332,700
Median gross rent$1,823This ZIP$1,823Maryland$1,705US $1,413
Bachelor's degree or higher58.6%This ZIP58.6%
Mean commute32.9 minThis ZIP32.9 min
Population density6,812.8 / sq miThis ZIP6,812.8 / sq mi

Business and tax activity

Business establishments506This ZIP506
Employees4,184This ZIP4,184
Annual payroll$221,902,000This ZIP$221,902,000
Tax returns filed18,610This ZIP18,610
Total adjusted gross income$1,769,340,000This ZIP$1,769,340,000

Land area

Land area5.35 sq miThis ZIP5.35 sq mi
Water area0.03 sq miThis ZIP0.03 sq mi

Other place names in 20901

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 20901

ZIPCityDistance
20993 Silver Spring, MD 1.5 mi
20903 Silver Spring, MD 1.6 mi
20910 Silver Spring, MD 1.9 mi
20907 Silver Spring, MD 2.3 mi
20908 Silver Spring, MD 2.3 mi
20911 Silver Spring, MD 2.3 mi
20914 Silver Spring, MD 2.3 mi
20915 Silver Spring, MD 2.3 mi
20916 Silver Spring, MD 2.3 mi
20918 Silver Spring, MD 2.3 mi

Find every ZIP code within 10 miles of 20901 →

Questions about this ZIP code

Where is ZIP code 20901?

20901 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 39.0215, -77.0098.

What county is 20901 in?

20901 lies in Montgomery County.

What time zone is 20901 in?

20901 uses America/New_York.

How many people live in 20901?

About 36,435 people live in ZIP code 20901, in 13,114 households, at 6,812.8 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 20901?

$131,386 a year, against $103,678 across Maryland.

What ZIP codes are near 20901?

The closest are 20993 (1.5 mi), 20903 (1.6 mi), 20910 (1.9 mi), 20907 (2.3 mi) and 20908 (2.3 mi).

Is 20901 a PO Box ZIP code?

20901 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “20901 ZIP Code — Silver Spring, Maryland (Montgomery County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/20901

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