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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/20151

20151

ZIP 20151 is in Chantilly, Virginia, in Fairfax County; area codes 571 and 703; Eastern time. Chantilly has 3 ZIP codes; the others are 20152 and 20153.

Type
Standard
Time zone
America/New_York
County
Fairfax
Population
22,610
Coordinates
38.8972, -77.4439
☼ Live from 20151 — Chantilly, VA

Weather right now

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NEXRAD radar
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Local time: —

Where 20151 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 20151
  • 🔢 Type 20151 into a pocket calculator and turn it upside down: ISIOZ — not quite a word, sorry.
  • ➕ As a number, 20,151 = 3 × 3 × 2239. Its digits add up to 9, a total 375 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100111010110111
  • 🏠 Its numerical neighbours: 20149 (Ashburn, VA, 10 mi away) and 20152 (Chantilly, VA, 4 mi away).
  • 🔄 Backwards, 20151 becomes 15102 — and that is a real ZIP code: Bethel Park, PA, 170 miles away.
  • 👥 37 other ZIP codes are made of exactly the same digits (01152, 01521, 02115, 02151, 10125, 10152, …). The farthest-flung twin is 51102 in Sioux City, IA, 1,016 miles away.
  • 🧭 Farther south than 51% of all ZIP codes, and farther east than 80%.
  • 🎯1,128 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 20151 and you would come out at 38.90°S, 102.56°E — 888 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 54m of daylight. Shortest: 9h 26m.
  • 📏 At 15.9 square miles of land, 20151 is bigger than 34% of ZIP codes — room for about 12 Central Parks.
🌙 The sky over 20151 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population22,610This ZIP22,610
Households7,095This ZIP7,095
Housing units7,141This ZIP7,141
Median age41.5This ZIP41.5Virginia39.0US 38.9
Median household income$158,271This ZIP$158,271Virginia$93,170US $80,734
Median home value$676,800This ZIP$676,800Virginia$383,700US $332,700
Median gross rent$2,280This ZIP$2,280Virginia$1,579US $1,413
Bachelor's degree or higher59.3%This ZIP59.3%
Mean commute28.0 minThis ZIP28.0 min
Population density1,425.8 / sq miThis ZIP1,425.8 / sq mi

Business and tax activity

Business establishments1,988This ZIP1,988
Employees64,615This ZIP64,615
Annual payroll$6,105,482,000This ZIP$6,105,482,000
Tax returns filed12,020This ZIP12,020
Total adjusted gross income$1,425,532,000This ZIP$1,425,532,000

Land area

Land area15.86 sq miThis ZIP15.86 sq mi
Water area0.13 sq miThis ZIP0.13 sq mi

Other place names in 20151

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

ZIP codes near 20151

ZIPCityDistance
20171 Herndon, VA 3.3 mi
22033 Fairfax, VA 3.5 mi
20120 Centreville, VA 3.5 mi
20152 Chantilly, VA 4.0 mi
20166 Sterling, VA 5.1 mi
22035 Fairfax, VA 5.2 mi
20191 Reston, VA 5.6 mi
20172 Herndon, VA 5.9 mi
22095 Herndon, VA 5.9 mi
20121 Centreville, VA 6.0 mi

Find every ZIP code within 10 miles of 20151 →

Questions about this ZIP code

Where is ZIP code 20151?

20151 is in Chantilly, Virginia, in Fairfax County, part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan area. Its published point location is 38.8972, -77.4439.

What county is 20151 in?

20151 lies in Fairfax County.

What area code is 20151?

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

What time zone is 20151 in?

20151 uses America/New_York.

How many people live in 20151?

About 22,610 people live in ZIP code 20151, in 7,095 households, at 1,425.8 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 20151?

$158,271 a year, against $93,170 across Virginia.

What ZIP codes are near 20151?

The closest are 20171 (3.3 mi), 22033 (3.5 mi), 20120 (3.5 mi), 20152 (4 mi) and 20166 (5.1 mi).

Is 20151 a PO Box ZIP code?

20151 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “20151 ZIP Code — Chantilly, Virginia (Fairfax County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/20151

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/20151.json

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