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zipcodes.pro — ZIP/20640

20640

ZIP 20640 is Indian Head, Maryland, in Charles County; area codes 240 and 301; Eastern time.

Type
Standard
Time zone
America/New_York
County
Charles
Population
10,685
Coordinates
38.5267, -77.2016
☼ Live from 20640 — Indian Head, MD

Weather right now

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NEXRAD radar
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Local time: —

Where 20640 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 20640
  • 🔢 Type 20640 into a pocket calculator and turn it upside down: OhgOZ — not quite a word, sorry.
  • ➕ As a number, 20,640 = 2 × 2 × 2 × 2 × 2 × 3 × 5 × 43. Its digits add up to 12, a total 940 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101000010100000
  • 🏠 Its numerical neighbours: 20639 (Huntingtown, MD, 33 mi away) and 20643 (Ironsides, MD, 3 mi away).
  • 🔄 Backwards, 20640 becomes 04602, which is not a ZIP code at all.
  • 👥 27 other ZIP codes are made of exactly the same digits (00624, 02460, 04062, 04260, 06024, 06042, …). The farthest-flung twin is 00624 in Penuelas, PR, 1,549 miles away.
  • 🧭 Farther south than 55% of all ZIP codes, and farther east than 81%.
  • 🎯1,146 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 20640 and you would come out at 38.53°S, 102.80°E — 865 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 51m of daylight. Shortest: 9h 28m.
  • 📏 At 41.7 square miles of land, 20640 is bigger than 55% of ZIP codes — room for about 32 Central Parks.
🌙 The sky over 20640 today
  • Working out the sun…
🌋 Shake report
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Source: USGS.

People and housing

Population10,685This ZIP10,685
Households4,163This ZIP4,163
Housing units4,501This ZIP4,501
Median age38.8This ZIP38.8Maryland39.4US 38.9
Median household income$100,593This ZIP$100,593Maryland$103,678US $80,734
Median home value$324,600This ZIP$324,600Maryland$419,900US $332,700
Median gross rent$1,529This ZIP$1,529Maryland$1,705US $1,413
Bachelor's degree or higher24.2%This ZIP24.2%
Mean commute44.4 minThis ZIP44.4 min
Population density256.1 / sq miThis ZIP256.1 / sq mi

Business and tax activity

Business establishments94This ZIP94
Employees494This ZIP494
Annual payroll$24,654,000This ZIP$24,654,000
Tax returns filed5,000This ZIP5,000
Total adjusted gross income$355,047,000This ZIP$355,047,000

Land area

Land area41.72 sq miThis ZIP41.72 sq mi
Water area5.81 sq miThis ZIP5.81 sq mi

Other place names in 20640

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

ZIP codes near 20640

ZIPCityDistance
20643 Ironsides, MD 3.3 mi
20658 Marbury, MD 3.8 mi
22135 Quantico, VA 5.0 mi
22026 Dumfries, VA 5.6 mi
20662 Nanjemoy, MD 6.8 mi
22191 Woodbridge, VA 7.4 mi
20693 Welcome, MD 7.7 mi
22025 Dumfries, VA 9.2 mi
20677 Port Tobacco, MD 9.2 mi
22194 Woodbridge, VA 9.4 mi

Find every ZIP code within 10 miles of 20640 →

Questions about this ZIP code

Where is ZIP code 20640?

20640 is in Indian Head, Maryland, in Charles County, part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan area. Its published point location is 38.5267, -77.2016.

What county is 20640 in?

20640 lies in Charles County.

What area code is 20640?

Indian Head uses area codes 240 and 301, from NANPA's telephone records.

What time zone is 20640 in?

20640 uses America/New_York.

How many people live in 20640?

About 10,685 people live in ZIP code 20640, in 4,163 households, at 256.1 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 20640?

$100,593 a year, against $103,678 across Maryland.

What ZIP codes are near 20640?

The closest are 20643 (3.3 mi), 20658 (3.8 mi), 22135 (5 mi), 22026 (5.6 mi) and 20662 (6.8 mi).

Is 20640 a PO Box ZIP code?

20640 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “20640 ZIP Code — Indian Head, Maryland (Charles County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/20640

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