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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/21093

21093

ZIP 21093 is in Lutherville Timonium, Maryland, in Baltimore County; area codes 410, 443 and 667; Eastern time. Lutherville Timonium has 2 ZIP codes; the other is 21094.

Type
Standard
Time zone
America/New_York
County
Baltimore
Population
39,100
Coordinates
39.4380, -76.6422
☼ Live from 21093 — Lutherville Timonium, MD

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Local time: —

Where 21093 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 21093
  • 🔢 Type 21093 into a pocket calculator and turn it upside down: EGOIZ — not quite a word, sorry.
  • ➕ As a number, 21,093 = 3 × 79 × 89. Its digits add up to 15, a total 1,657 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101001001100101
  • 🏠 Its numerical neighbours: 21092 (Long Green, MD, 7 mi away) and 21094 (Lutherville Timonium, MD, 3 mi away).
  • 🔄 Backwards, 21093 becomes 39012, which is not a ZIP code at all.
  • 👥 65 other ZIP codes are made of exactly the same digits (01923, 02139, 03291, 09123, 09132, 09213, …). The farthest-flung twin is 09213 in APO AE, a military post office, 4,017 miles away.
  • 🧭 Farther north than 52% of all ZIP codes, and farther east than 83%.
  • 🎯1,165 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21093 and you would come out at 39.44°S, 103.36°E — 870 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 57m of daylight. Shortest: 9h 23m.
  • 📏 At 20.2 square miles of land, 21093 is bigger than 38% of ZIP codes — room for about 15 Central Parks.
🌙 The sky over 21093 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population39,100This ZIP39,100
Households15,688This ZIP15,688
Housing units16,418This ZIP16,418
Median age45.3This ZIP45.3Maryland39.4US 38.9
Median household income$125,528This ZIP$125,528Maryland$103,678US $80,734
Median home value$477,700This ZIP$477,700Maryland$419,900US $332,700
Median gross rent$1,593This ZIP$1,593Maryland$1,705US $1,413
Bachelor's degree or higher69.7%This ZIP69.7%
Mean commute24.7 minThis ZIP24.7 min
Population density1,932.9 / sq miThis ZIP1,932.9 / sq mi

Business and tax activity

Business establishments1,645This ZIP1,645
Employees23,648This ZIP23,648
Annual payroll$1,567,657,000This ZIP$1,567,657,000
Tax returns filed19,830This ZIP19,830
Total adjusted gross income$3,329,003,000This ZIP$3,329,003,000

Land area

Land area20.23 sq miThis ZIP20.23 sq mi
Water area0.84 sq miThis ZIP0.84 sq mi

Other place names in 21093

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

ZIP codes near 21093

ZIPCityDistance
21139 Riderwood, MD 2.0 mi
21204 Towson, MD 2.3 mi
21094 Lutherville Timonium, MD 2.7 mi
21022 Brooklandville, MD 3.2 mi
21284 Towson, MD 3.3 mi
21153 Stevenson, MD 3.4 mi
21252 Towson, MD 3.4 mi
21031 Hunt Valley, MD 3.5 mi
21065 Hunt Valley, MD 3.5 mi
21285 Towson, MD 3.7 mi

Find every ZIP code within 10 miles of 21093 →

Questions about this ZIP code

Where is ZIP code 21093?

21093 is in Lutherville Timonium, Maryland, in Baltimore County, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.4380, -76.6422.

What county is 21093 in?

21093 lies in Baltimore County.

What area code is 21093?

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

What time zone is 21093 in?

21093 uses America/New_York.

How many people live in 21093?

About 39,100 people live in ZIP code 21093, in 15,688 households, at 1,932.9 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 21093?

$125,528 a year, against $103,678 across Maryland.

What ZIP codes are near 21093?

The closest are 21139 (2 mi), 21204 (2.3 mi), 21094 (2.7 mi), 21022 (3.2 mi) and 21284 (3.3 mi).

Is 21093 a PO Box ZIP code?

21093 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “21093 ZIP Code — Lutherville Timonium, Maryland (Baltimore County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21093

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