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zipcodes.pro — ZIP/20603

20603

ZIP 20603 is in Waldorf, Maryland, in Charles County; area codes 240, 301 and 227; Eastern time. Waldorf has 4 ZIP codes; the others are 20601, 20602 and 20604.

Type
Standard
Time zone
America/New_York
County
Charles
Population
31,844
Coordinates
38.6291, -76.9756
☼ Live from 20603 — Waldorf, MD

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Local time: —

Where 20603 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 20603
  • 🔢 Type 20603 into a pocket calculator and turn it upside down: EOgOZ — not quite a word, sorry.
  • ➕ As a number, 20,603 = 11 × 1873. Its digits add up to 11, a total 714 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101000001111011
  • 🏠 Its numerical neighbours: 20602 (Waldorf, MD, 5 mi away) and 20604 (Waldorf, MD, 8 mi away).
  • 🔄 Backwards, 20603 becomes 30602 — and that is a real ZIP code: Athens, GA, 481 miles away.
  • 👥 30 other ZIP codes are made of exactly the same digits (00623, 02360, 02630, 03062, 03260, 03602, …). The farthest-flung twin is 00623 in Cabo Rojo, PR, 1,537 miles away.
  • 🧭 Farther south than 54% of all ZIP codes, and farther east than 82%.
  • 🎯1,156 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 20603 and you would come out at 38.63°S, 103.02°E — 857 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 52m of daylight. Shortest: 9h 28m.
  • 📏 At 16.2 square miles of land, 20603 is bigger than 34% of ZIP codes — room for about 12 Central Parks.
🌙 The sky over 20603 today
  • Working out the sun…
🌋 Shake report
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Source: USGS.

People and housing

Population31,844This ZIP31,844
Households11,324This ZIP11,324
Housing units11,843This ZIP11,843
Median age38.4This ZIP38.4Maryland39.4US 38.9
Median household income$137,946This ZIP$137,946Maryland$103,678US $80,734
Median home value$453,700This ZIP$453,700Maryland$419,900US $332,700
Median gross rent$2,024This ZIP$2,024Maryland$1,705US $1,413
Bachelor's degree or higher39.9%This ZIP39.9%
Mean commute40.7 minThis ZIP40.7 min
Population density1,966.0 / sq miThis ZIP1,966.0 / sq mi

Business and tax activity

Business establishments479This ZIP479
Employees6,625This ZIP6,625
Annual payroll$208,753,000This ZIP$208,753,000
Tax returns filed16,670This ZIP16,670
Total adjusted gross income$1,462,352,000This ZIP$1,462,352,000

Land area

Land area16.20 sq miThis ZIP16.20 sq mi
Water area0.09 sq miThis ZIP0.09 sq mi

Other place names in 20603

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

ZIP codes near 20603

ZIPCityDistance
20695 White Plains, MD 2.9 mi
20675 Pomfret, MD 3.8 mi
20607 Accokeek, MD 4.1 mi
20602 Waldorf, MD 5.4 mi
20601 Waldorf, MD 6.5 mi
20616 Bryans Road, MD 7.0 mi
20646 La Plata, MD 7.6 mi
20744 Fort Washington, MD 8.1 mi
20604 Waldorf, MD 8.3 mi
22308 Alexandria, VA 8.3 mi

Find every ZIP code within 10 miles of 20603 →

Questions about this ZIP code

Where is ZIP code 20603?

20603 is in Waldorf, Maryland, in Charles County, part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan area. Its published point location is 38.6291, -76.9756.

What county is 20603 in?

20603 lies in Charles County.

What area code is 20603?

Waldorf uses area codes 240, 301 and 227, from NANPA's telephone records.

What time zone is 20603 in?

20603 uses America/New_York.

How many people live in 20603?

About 31,844 people live in ZIP code 20603, in 11,324 households, at 1,966.0 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 20603?

$137,946 a year, against $103,678 across Maryland.

What ZIP codes are near 20603?

The closest are 20695 (2.9 mi), 20675 (3.8 mi), 20607 (4.1 mi), 20602 (5.4 mi) and 20601 (6.5 mi).

Is 20603 a PO Box ZIP code?

20603 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “20603 ZIP Code — Waldorf, Maryland (Charles County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/20603

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