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zipcodes.pro — ZIP/21090

21090

ZIP 21090 is Linthicum Heights, Maryland, in Anne Arundel County; area codes 410, 443 and 667; Eastern time.

Type
Standard
Time zone
America/New_York
County
Anne Arundel
Population
10,652
Coordinates
39.2096, -76.6647
☼ Live from 21090 — Linthicum Heights, MD

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Local time: —

Where 21090 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 21090
  • 🔢 Type 21090 into a pocket calculator and turn it upside down: OGOIZ — not quite a word, sorry.
  • ➕ As a number, 21,090 = 2 × 3 × 5 × 19 × 37. Its digits add up to 12, a total 940 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101001001100010
  • 🏠 Its numerical neighbours: 21088 (Lineboro, MD, 36 mi away) and 21092 (Long Green, MD, 20 mi away).
  • 🔄 Backwards, 21090 becomes 09012 — and that is a real ZIP code: APO AE, a military post office, 4,004 miles away.
  • 👥 34 other ZIP codes are made of exactly the same digits (00912, 00921, 01029, 01092, 01902, 02019, …). The farthest-flung twin is 09102 in APO AE, a military post office, 4,050 miles away.
  • 🧭 Farther north than 50% of all ZIP codes, and farther east than 83%.
  • 🎯1,166 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21090 and you would come out at 39.21°S, 103.34°E — 863 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 56m of daylight. Shortest: 9h 24m.
  • 📏 At 6.6 square miles of land, 21090 is bigger than 22% of ZIP codes — room for about 5.0 Central Parks.
🌙 The sky over 21090 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population10,652This ZIP10,652
Households3,979This ZIP3,979
Housing units4,255This ZIP4,255
Median age36.8This ZIP36.8Maryland39.4US 38.9
Median household income$138,119This ZIP$138,119Maryland$103,678US $80,734
Median home value$410,400This ZIP$410,400Maryland$419,900US $332,700
Median gross rent$2,055This ZIP$2,055Maryland$1,705US $1,413
Bachelor's degree or higher42.8%This ZIP42.8%
Mean commute23.5 minThis ZIP23.5 min
Population density1,604.0 / sq miThis ZIP1,604.0 / sq mi

Business and tax activity

Business establishments554This ZIP554
Employees25,070This ZIP25,070
Annual payroll$2,252,332,000This ZIP$2,252,332,000
Tax returns filed5,650This ZIP5,650
Total adjusted gross income$509,127,000This ZIP$509,127,000

Land area

Land area6.64 sq miThis ZIP6.64 sq mi
Water area0.08 sq miThis ZIP0.08 sq mi

Other place names in 21090

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

ZIP codes near 21090

ZIPCityDistance
21227 Halethorpe, MD 2.2 mi
21240 Baltimore, MD 2.4 mi
21225 Brooklyn, MD 2.9 mi
21061 Glen Burnie, MD 3.8 mi
21077 Harmans, MD 4.0 mi
21250 Baltimore, MD 4.0 mi
21076 Hanover, MD 4.1 mi
21230 Baltimore, MD 4.5 mi
21075 Elkridge, MD 4.6 mi
21223 Baltimore, MD 5.1 mi

Find every ZIP code within 10 miles of 21090 →

Questions about this ZIP code

Where is ZIP code 21090?

21090 is in Linthicum Heights, Maryland, in Anne Arundel County, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.2096, -76.6647.

What county is 21090 in?

21090 lies in Anne Arundel County.

What area code is 21090?

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

What time zone is 21090 in?

21090 uses America/New_York.

How many people live in 21090?

About 10,652 people live in ZIP code 21090, in 3,979 households, at 1,604.0 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 21090?

$138,119 a year, against $103,678 across Maryland.

What ZIP codes are near 21090?

The closest are 21227 (2.2 mi), 21240 (2.4 mi), 21225 (2.9 mi), 21061 (3.8 mi) and 21077 (4 mi).

Is 21090 a PO Box ZIP code?

21090 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21090 ZIP Code — Linthicum Heights, Maryland (Anne Arundel County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21090

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