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/20177

20177

ZIP 20177 is in Leesburg, Virginia, in Loudoun County; area codes 571 and 703; Eastern time. Leesburg has 4 ZIP codes; the others are 20175, 20176 and 20178.

Type
No street area
Time zone
America/New_York
County
Loudoun
Coordinates
39.1157, -77.5636

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 20176, whose figures describe that area — not this ZIP code.

☼ Live from 20177 — Leesburg, VA

Weather right now

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NEXRAD radar
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Local time: —

Where 20177 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 20177
  • 🔢 Type 20177 into a pocket calculator and turn it upside down: LLIOZ — not quite a word, sorry.
  • ➕ 20177 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 17, a total 2,133 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100111011010001
  • 🏠 Its numerical neighbours: 20176 (Leesburg, VA, 5 mi away) and 20178 (Leesburg, VA, 0 mi away).
  • 🔄 Backwards, 20177 becomes 77102, which is not a ZIP code at all.
  • 👥 37 other ZIP codes are made of exactly the same digits (01772, 02717, 02771, 07712, 07721, 10277, …). The farthest-flung twin is 77021 in Houston, TX, 1,202 miles away.
  • 🧭 Farther north than 50% of all ZIP codes, and farther east than 80%.
  • 🎯1,119 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 20177 and you would come out at 39.12°S, 102.44°E — 901 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 20177 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments11This ZIP11
Employees29This ZIP29
Annual payroll$1,229,000This ZIP$1,229,000

Land area

ZIP codes near 20177

ZIPCityDistance
20178 Leesburg, VA 0.0 mi
20129 Paeonian Springs, VA 3.7 mi
20175 Leesburg, VA 4.1 mi
20176 Leesburg, VA 4.7 mi
20102 Dulles, VA 4.9 mi
20104 Dulles, VA 4.9 mi
20146 Ashburn, VA 4.9 mi
20158 Hamilton, VA 5.4 mi
20159 Hamilton, VA 5.4 mi
20149 Ashburn, VA 6.4 mi

Find every ZIP code within 10 miles of 20177 →

Questions about this ZIP code

Where is ZIP code 20177?

20177 is in Leesburg, Virginia, in Loudoun County, part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan area. Its published point location is 39.1157, -77.5636.

What county is 20177 in?

20177 lies in Loudoun County.

What area code is 20177?

Leesburg uses area codes 571 and 703, from NANPA's telephone records.

What time zone is 20177 in?

20177 uses America/New_York.

What ZIP codes are near 20177?

The closest are 20178 (0 mi), 20129 (3.7 mi), 20175 (4.1 mi), 20176 (4.7 mi) and 20102 (4.9 mi).

Is 20177 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. “20177 ZIP Code — Leesburg, Virginia (Loudoun County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/20177

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/20177.json

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