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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/21108

21108

ZIP 21108 is Millersville, Maryland, in Anne Arundel County; area codes 443, 410 and 667; Eastern time.

Type
Standard
Time zone
America/New_York
County
Anne Arundel
Population
18,643
Coordinates
39.0903, -76.6213
☼ Live from 21108 — Millersville, MD

Weather right now

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NEXRAD radar
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Local time: —

Where 21108 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 21108
  • 🔢 Type 21108 into a pocket calculator and turn it upside down: BOIIZ — not quite a word, sorry.
  • ➕ As a number, 21,108 = 2 × 2 × 3 × 1759. Its digits add up to 12, a total 940 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101001001110100
  • 🏠 Its numerical neighbours: 21106 (Mayo, MD, 15 mi away) and 21111 (Monkton, MD, 34 mi away).
  • 🔄 Backwards, 21108 becomes 80112 — and that is a real ZIP code: Englewood, CO, 1,504 miles away.
  • 👥 34 other ZIP codes are made of exactly the same digits (01128, 01812, 01821, 02118, 10128, 10281, …). The farthest-flung twin is 81120 in Antonito, CO, 1,614 miles away.
  • 🧭 Farther south than 50% of all ZIP codes, and farther east than 83%.
  • 🎯1,170 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21108 and you would come out at 39.09°S, 103.38°E — 857 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 55m of daylight. Shortest: 9h 25m.
  • 📏 At 12.9 square miles of land, 21108 is bigger than 31% of ZIP codes — room for about 9.8 Central Parks.
🌙 The sky over 21108 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population18,643This ZIP18,643
Households6,648This ZIP6,648
Housing units6,797This ZIP6,797
Median age41.3This ZIP41.3Maryland39.4US 38.9
Median household income$151,324This ZIP$151,324Maryland$103,678US $80,734
Median home value$555,000This ZIP$555,000Maryland$419,900US $332,700
Median gross rent$2,049This ZIP$2,049Maryland$1,705US $1,413
Bachelor's degree or higher55.3%This ZIP55.3%
Mean commute26.9 minThis ZIP26.9 min
Population density1,443.6 / sq miThis ZIP1,443.6 / sq mi

Business and tax activity

Business establishments558This ZIP558
Employees6,647This ZIP6,647
Annual payroll$498,153,000This ZIP$498,153,000
Tax returns filed9,740This ZIP9,740
Total adjusted gross income$1,265,218,000This ZIP$1,265,218,000

Land area

Land area12.91 sq miThis ZIP12.91 sq mi
Water area0.28 sq miThis ZIP0.28 sq mi

Other place names in 21108

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

ZIP codes near 21108

ZIPCityDistance
21146 Severna Park, MD 3.4 mi
21144 Severn, MD 3.7 mi
21032 Crownsville, MD 4.4 mi
21054 Gambrills, MD 4.4 mi
21061 Glen Burnie, MD 4.9 mi
21113 Odenton, MD 5.2 mi
21405 Annapolis, MD 5.8 mi
21060 Glen Burnie, MD 6.2 mi
21077 Harmans, MD 6.3 mi
21240 Baltimore, MD 6.4 mi

Find every ZIP code within 10 miles of 21108 →

Questions about this ZIP code

Where is ZIP code 21108?

21108 is in Millersville, Maryland, in Anne Arundel County, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.0903, -76.6213.

What county is 21108 in?

21108 lies in Anne Arundel County.

What area code is 21108?

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

What time zone is 21108 in?

21108 uses America/New_York.

How many people live in 21108?

About 18,643 people live in ZIP code 21108, in 6,648 households, at 1,443.6 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 21108?

$151,324 a year, against $103,678 across Maryland.

What ZIP codes are near 21108?

The closest are 21146 (3.4 mi), 21144 (3.7 mi), 21032 (4.4 mi), 21054 (4.4 mi) and 21061 (4.9 mi).

Is 21108 a PO Box ZIP code?

21108 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21108 ZIP Code — Millersville, Maryland (Anne Arundel County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21108

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