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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/21044

21044

ZIP 21044 is in Columbia, Maryland, in Howard County; area codes 443, 410 and 667; Eastern time. Columbia has 3 ZIP codes; the others are 21045 and 21046.

Type
Standard
Time zone
America/New_York
County
Howard
Population
44,114
Coordinates
39.2053, -76.8787
☼ Live from 21044 — Columbia, MD

Weather right now

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NEXRAD radar
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Local time: —

Where 21044 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 21044
  • 🔢 Type 21044 into a pocket calculator and turn it upside down: hhOIZ — not quite a word, sorry.
  • ➕ As a number, 21,044 = 2 × 2 × 5261. Its digits add up to 11, a total 714 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101001000110100
  • 🏠 Its numerical neighbours: 21043 (Ellicott City, MD, 5 mi away) and 21045 (Columbia, MD, 3 mi away).
  • 🔄 Backwards, 21044 becomes 44012 — and that is a real ZIP code: Avon Lake, OH, 313 miles away.
  • 👥 36 other ZIP codes are made of exactly the same digits (01244, 02144, 04124, 04241, 04412, 04421, …). The farthest-flung twin is 42041 in Fulton, KY, 679 miles away.
  • 🧭 Farther north than 50% of all ZIP codes, and farther east than 82%.
  • 🎯1,155 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21044 and you would come out at 39.21°S, 103.12°E — 872 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 56m of daylight. Shortest: 9h 24m.
  • 📏 At 11.9 square miles of land, 21044 is bigger than 29% of ZIP codes — room for about 9.0 Central Parks.
🌙 The sky over 21044 today
  • Working out the sun…
🌋 Shake report
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Source: USGS.

People and housing

Population44,114This ZIP44,114
Households18,293This ZIP18,293
Housing units19,811This ZIP19,811
Median age40.0This ZIP40.0Maryland39.4US 38.9
Median household income$135,057This ZIP$135,057Maryland$103,678US $80,734
Median home value$566,500This ZIP$566,500Maryland$419,900US $332,700
Median gross rent$2,166This ZIP$2,166Maryland$1,705US $1,413
Bachelor's degree or higher67.9%This ZIP67.9%
Mean commute29.2 minThis ZIP29.2 min
Population density3,711.1 / sq miThis ZIP3,711.1 / sq mi

Business and tax activity

Business establishments1,181This ZIP1,181
Employees24,225This ZIP24,225
Annual payroll$2,219,166,000This ZIP$2,219,166,000
Tax returns filed22,840This ZIP22,840
Total adjusted gross income$2,608,916,000This ZIP$2,608,916,000

Land area

Land area11.89 sq miThis ZIP11.89 sq mi
Water area0.10 sq miThis ZIP0.10 sq mi

Other place names in 21044

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

ZIP codes near 21044

ZIPCityDistance
21045 Columbia, MD 2.7 mi
21046 Columbia, MD 3.2 mi
21041 Ellicott City, MD 4.0 mi
21150 Simpsonville, MD 4.0 mi
21029 Clarksville, MD 4.4 mi
20759 Fulton, MD 4.5 mi
20723 Laurel, MD 4.7 mi
21042 Ellicott City, MD 5.0 mi
20777 Highland, MD 5.3 mi
21043 Ellicott City, MD 5.4 mi

Find every ZIP code within 10 miles of 21044 →

Questions about this ZIP code

Where is ZIP code 21044?

21044 is in Columbia, Maryland, in Howard County, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.2053, -76.8787.

What county is 21044 in?

21044 lies in Howard County.

What area code is 21044?

Columbia uses area codes 443, 410 and 667, from NANPA's telephone records.

What time zone is 21044 in?

21044 uses America/New_York.

How many people live in 21044?

About 44,114 people live in ZIP code 21044, in 18,293 households, at 3,711.1 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 21044?

$135,057 a year, against $103,678 across Maryland.

What ZIP codes are near 21044?

The closest are 21045 (2.7 mi), 21046 (3.2 mi), 21041 (4 mi), 21150 (4 mi) and 21029 (4.4 mi).

Is 21044 a PO Box ZIP code?

21044 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21044 ZIP Code — Columbia, Maryland (Howard County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21044

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