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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/21216

21216

ZIP 21216 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
29,426
Coordinates
39.3106, -76.6717
☼ Live from 21216 — Baltimore, MD

Weather right now

Asking the National Weather Service…

NEXRAD radar
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Local time: —

Where 21216 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 21216
  • 🔢 Type 21216 into a pocket calculator and turn it upside down: gIZIZ — not quite a word, sorry.
  • ➕ As a number, 21,216 = 2 × 2 × 2 × 2 × 2 × 3 × 13 × 17. Its digits add up to 12, a total 940 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101001011100000
  • 🏠 Its numerical neighbours: 21215 (Baltimore, MD, 3 mi away) and 21217 (Baltimore, MD, 2 mi away).
  • 🔄 Backwards, 21216 becomes 61212, which is not a ZIP code at all.
  • 👥 10 other ZIP codes are made of exactly the same digits (11226, 12261, 16212, 16221, 21162, 21612, …). The farthest-flung twin is 12261 in Albany, NY, 276 miles away.
  • 🧭 Farther north than 51% of all ZIP codes, and farther east than 83%.
  • 🎯1,164 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21216 and you would come out at 39.31°S, 103.33°E — 867 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 56m of daylight. Shortest: 9h 24m.
  • 📏 At 3.3 square miles of land, 21216 is bigger than 15% of ZIP codes — room for about 2.5 Central Parks.
🌙 The sky over 21216 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population29,426This ZIP29,426
Households12,307This ZIP12,307
Housing units15,580This ZIP15,580
Median age34.7This ZIP34.7Maryland39.4US 38.9
Median household income$42,031This ZIP$42,031Maryland$103,678US $80,734
Median home value$147,800This ZIP$147,800Maryland$419,900US $332,700
Median gross rent$1,176This ZIP$1,176Maryland$1,705US $1,413
Bachelor's degree or higher17.2%This ZIP17.2%
Mean commute33.2 minThis ZIP33.2 min
Population density8,911.6 / sq miThis ZIP8,911.6 / sq mi

Business and tax activity

Business establishments202This ZIP202
Employees1,172This ZIP1,172
Annual payroll$44,602,000This ZIP$44,602,000
Tax returns filed10,870This ZIP10,870
Total adjusted gross income$426,801,000This ZIP$426,801,000

Land area

Land area3.30 sq miThis ZIP3.30 sq mi
Water area0.05 sq miThis ZIP0.05 sq mi

Other place names in 21216

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

ZIP codes near 21216

ZIPCityDistance
21217 Baltimore, MD 1.8 mi
21229 Baltimore, MD 2.1 mi
21223 Baltimore, MD 2.1 mi
21211 Baltimore, MD 2.1 mi
21215 Baltimore, MD 2.5 mi
21207 Gwynn Oak, MD 2.7 mi
21290 Baltimore, MD 2.8 mi
21201 Baltimore, MD 2.9 mi
21203 Baltimore, MD 3.3 mi
21235 Baltimore, MD 3.3 mi

Find every ZIP code within 10 miles of 21216 →

Questions about this ZIP code

Where is ZIP code 21216?

21216 is in Baltimore, Maryland, in Baltimore city, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.3106, -76.6717.

What county is 21216 in?

21216 lies in Baltimore city.

What area code is 21216?

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

What time zone is 21216 in?

21216 uses America/New_York.

How many people live in 21216?

About 29,426 people live in ZIP code 21216, in 12,307 households, at 8,911.6 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 21216?

$42,031 a year, against $103,678 across Maryland.

What ZIP codes are near 21216?

The closest are 21217 (1.8 mi), 21229 (2.1 mi), 21223 (2.1 mi), 21211 (2.1 mi) and 21215 (2.5 mi).

Is 21216 a PO Box ZIP code?

21216 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21216 ZIP Code — Baltimore, Maryland (Baltimore City).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21216

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