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/22101

22101

ZIP 22101 is in Mc Lean, Virginia, mostly in Fairfax County; area codes 571 and 703; Eastern time. Mc Lean has 6 ZIP codes; the others are 22102, 22106, 22107, 22108 and 22109.

Type
Standard
Time zone
America/New_York
County
Fairfax +1 more
Population
30,953
Coordinates
38.9402, -77.1649
☼ Live from 22101 — Mc Lean, VA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 22101 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 22101
  • 🔢 Type 22101 into a pocket calculator and turn it upside down: IOIZZ — not quite a word, sorry.
  • ➕ As a number, 22,101 = 3 × 53 × 139. Its digits add up to 6, a total 90 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101011001010101
  • 🏠 Its numerical neighbours: 22096 (Reston, VA, 10 mi away) and 22102 (Mc Lean, VA, 4 mi away).
  • 🔄 Backwards, 22101 becomes 10122 — and that is a real ZIP code: New York, NY, 210 miles away.
  • 👥 19 other ZIP codes are made of exactly the same digits (02112, 02121, 02211, 10122, 10212, 11022, …). The farthest-flung twin is 02112 in Boston, MA, 398 miles away.
  • 🧭 Farther south than 51% of all ZIP codes, and farther east than 81%.
  • 🎯1,143 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 22101 and you would come out at 38.94°S, 102.84°E — 876 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 54m of daylight. Shortest: 9h 26m.
  • 📏 At 13.1 square miles of land, 22101 is bigger than 31% of ZIP codes — room for about 9.9 Central Parks.
🌙 The sky over 22101 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population30,953This ZIP30,953
Households11,014This ZIP11,014
Housing units11,436This ZIP11,436
Median age47.5This ZIP47.5Virginia39.0US 38.9
Median household income$250,000+This ZIP$250,000+Virginia$93,170US $80,734
Median home value$1,449,900This ZIP$1,449,900Virginia$383,700US $332,700
Median gross rent$3,500+This ZIP$3,500+Virginia$1,579US $1,413
Bachelor's degree or higher84.8%This ZIP84.8%
Mean commute27.3 minThis ZIP27.3 min
Population density2,362.3 / sq miThis ZIP2,362.3 / sq mi

Business and tax activity

Business establishments1,290This ZIP1,290
Employees11,964This ZIP11,964
Annual payroll$1,214,227,000This ZIP$1,214,227,000
Tax returns filed14,330This ZIP14,330
Total adjusted gross income$7,038,420,000This ZIP$7,038,420,000

Land area

Land area13.10 sq miThis ZIP13.10 sq mi
Water area0.04 sq miThis ZIP0.04 sq mi

Counties 22101 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Fairfax County 99.5%
Arlington County 0.5%

Other place names in 22101

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

ZIP codes near 22101

ZIPCityDistance
22106 Mc Lean, VA 0.9 mi
22109 Mc Lean, VA 0.9 mi
22107 Mc Lean, VA 1.2 mi
22108 Mc Lean, VA 1.2 mi
20812 Glen Echo, MD 2.2 mi
20818 Cabin John, MD 2.3 mi
20816 Bethesda, MD 2.7 mi
22213 Arlington, VA 3.2 mi
22207 Arlington, VA 3.2 mi
22043 Falls Church, VA 3.2 mi

Find every ZIP code within 10 miles of 22101 →

Questions about this ZIP code

Where is ZIP code 22101?

22101 is in Mc Lean, Virginia, in Fairfax County, part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan area. Its published point location is 38.9402, -77.1649.

What county is 22101 in?

22101 spans 2 counties: Fairfax County and Arlington County. Most of it falls in Fairfax County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 22101?

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

What time zone is 22101 in?

22101 uses America/New_York.

How many people live in 22101?

About 30,953 people live in ZIP code 22101, in 11,014 households, at 2,362.3 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 22101?

$250,000+ a year, against $93,170 across Virginia.

What ZIP codes are near 22101?

The closest are 22106 (0.9 mi), 22109 (0.9 mi), 22107 (1.2 mi), 22108 (1.2 mi) and 20812 (2.2 mi).

Is 22101 a PO Box ZIP code?

22101 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “22101 ZIP Code — Mc Lean, Virginia (Fairfax County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/22101

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/22101.json

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