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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/21218

21218

ZIP 21218 is in Baltimore, Maryland, in Baltimore City; area codes 410, 443 and 667; Eastern time. Baltimore has 42 ZIP codes in all.

Type
Standard
Time zone
America/New_York
Population
44,014
Coordinates
39.3301, -76.6015
☼ Live from 21218 — Baltimore, MD

Weather right now

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NEXRAD radar
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Local time: —

Where 21218 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 21218
  • 🔢 Type 21218 into a pocket calculator and turn it upside down: BIZIZ — not quite a word, sorry.
  • ➕ As a number, 21,218 = 2 × 103 × 103. Its digits add up to 14, a total 1,416 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101001011100010
  • 🏠 Its numerical neighbours: 21217 (Baltimore, MD, 3 mi away) and 21219 (Sparrows Point, MD, 11 mi away).
  • 🔄 Backwards, 21218 becomes 81212 — and that is a real ZIP code: Canon City, CO, 1,543 miles away.
  • 👥 18 other ZIP codes are made of exactly the same digits (11228, 12128, 12182, 12812, 12821, 18212, …). The farthest-flung twin is 81122 in Bayfield, CO, 1,675 miles away.
  • 🧭 Farther north than 51% of all ZIP codes, and farther east than 83%.
  • 🎯1,168 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21218 and you would come out at 39.33°S, 103.40°E — 864 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 57m of daylight. Shortest: 9h 24m.
  • 📏 At 4.3 square miles of land, 21218 is bigger than 17% of ZIP codes — room for about 3.3 Central Parks.
🌙 The sky over 21218 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population44,014This ZIP44,014
Households18,703This ZIP18,703
Housing units21,738This ZIP21,738
Median age35.0This ZIP35.0Maryland39.4US 38.9
Median household income$62,488This ZIP$62,488Maryland$103,678US $80,734
Median home value$242,500This ZIP$242,500Maryland$419,900US $332,700
Median gross rent$1,264This ZIP$1,264Maryland$1,705US $1,413
Bachelor's degree or higher44.7%This ZIP44.7%
Mean commute28.6 minThis ZIP28.6 min
Population density10,167.2 / sq miThis ZIP10,167.2 / sq mi

Business and tax activity

Business establishments764This ZIP764
Employees44,841This ZIP44,841
Annual payroll$3,744,713,000This ZIP$3,744,713,000
Tax returns filed18,320This ZIP18,320
Total adjusted gross income$1,376,089,000This ZIP$1,376,089,000

Land area

Land area4.33 sq miThis ZIP4.33 sq mi
Water area0.12 sq miThis ZIP0.12 sq mi

Other place names in 21218

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

ZIP codes near 21218

ZIPCityDistance
21213 Baltimore, MD 1.7 mi
21251 Baltimore, MD 1.8 mi
21211 Baltimore, MD 2.0 mi
21287 Baltimore, MD 2.3 mi
21202 Baltimore, MD 2.3 mi
21214 Baltimore, MD 2.5 mi
21217 Baltimore, MD 2.5 mi
21239 Baltimore, MD 2.5 mi
21233 Baltimore, MD 2.6 mi
21210 Baltimore, MD 2.6 mi

Find every ZIP code within 10 miles of 21218 →

Questions about this ZIP code

Where is ZIP code 21218?

21218 is in Baltimore, Maryland, in Baltimore city, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.3301, -76.6015.

What county is 21218 in?

21218 lies in Baltimore city.

What area code is 21218?

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

What time zone is 21218 in?

21218 uses America/New_York.

How many people live in 21218?

About 44,014 people live in ZIP code 21218, in 18,703 households, at 10,167.2 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 21218?

$62,488 a year, against $103,678 across Maryland.

What ZIP codes are near 21218?

The closest are 21213 (1.7 mi), 21251 (1.8 mi), 21211 (2 mi), 21287 (2.3 mi) and 21202 (2.3 mi).

Is 21218 a PO Box ZIP code?

21218 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21218 ZIP Code — Baltimore, Maryland (Baltimore City).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21218

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