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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/21205

21205

ZIP 21205 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
13,013
Coordinates
39.3022, -76.5641
☼ Live from 21205 — Baltimore, MD

Weather right now

Asking the National Weather Service…

NEXRAD radar
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Local time: —

Where 21205 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 21205
  • 🔢 Type 21205 into a pocket calculator and turn it upside down: SOZIZ — not quite a word, sorry.
  • ➕ As a number, 21,205 = 5 × 4241. Its digits add up to 10, a total 513 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101001011010101
  • 🏠 Its numerical neighbours: 21204 (Towson, MD, 8 mi away) and 21206 (Baltimore, MD, 3 mi away).
  • 🔄 Backwards, 21205 becomes 50212 — and that is a real ZIP code: Ogden, IA, 935 miles away.
  • 👥 35 other ZIP codes are made of exactly the same digits (01225, 01252, 01522, 02125, 02152, 02215, …). The farthest-flung twin is 51022 in Granville, IA, 1,032 miles away.
  • 🧭 Farther north than 51% 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 21205 and you would come out at 39.30°S, 103.44°E — 862 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 56m of daylight. Shortest: 9h 24m.
  • 📏 At 2.1 square miles of land, 21205 is bigger than 12% of ZIP codes — room for about 1.6 Central Parks.
🌙 The sky over 21205 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population13,013This ZIP13,013
Households5,111This ZIP5,111
Housing units6,291This ZIP6,291
Median age35.9This ZIP35.9Maryland39.4US 38.9
Median household income$43,176This ZIP$43,176Maryland$103,678US $80,734
Median home value$96,100This ZIP$96,100Maryland$419,900US $332,700
Median gross rent$1,128This ZIP$1,128Maryland$1,705US $1,413
Bachelor's degree or higher16.6%This ZIP16.6%
Mean commute28.2 minThis ZIP28.2 min
Population density6,344.7 / sq miThis ZIP6,344.7 / sq mi

Business and tax activity

Business establishments265This ZIP265
Employees7,359This ZIP7,359
Annual payroll$482,575,000This ZIP$482,575,000
Tax returns filed5,900This ZIP5,900
Total adjusted gross income$200,435,000This ZIP$200,435,000

Land area

Land area2.05 sq miThis ZIP2.05 sq mi
Water area0.00 sq mi

Other place names in 21205

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

ZIP codes near 21205

ZIPCityDistance
21213 Baltimore, MD 1.1 mi
21287 Baltimore, MD 1.3 mi
21231 Baltimore, MD 1.8 mi
21224 Baltimore, MD 2.2 mi
21233 Baltimore, MD 2.3 mi
21202 Baltimore, MD 2.4 mi
21218 Baltimore, MD 2.8 mi
21206 Baltimore, MD 2.8 mi
21201 Baltimore, MD 3.2 mi
21203 Baltimore, MD 3.3 mi

Find every ZIP code within 10 miles of 21205 →

Questions about this ZIP code

Where is ZIP code 21205?

21205 is in Baltimore, Maryland, in Baltimore city, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.3022, -76.5641.

What county is 21205 in?

21205 lies in Baltimore city.

What area code is 21205?

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

What time zone is 21205 in?

21205 uses America/New_York.

How many people live in 21205?

About 13,013 people live in ZIP code 21205, in 5,111 households, at 6,344.7 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 21205?

$43,176 a year, against $103,678 across Maryland.

What ZIP codes are near 21205?

The closest are 21213 (1.1 mi), 21287 (1.3 mi), 21231 (1.8 mi), 21224 (2.2 mi) and 21233 (2.3 mi).

Is 21205 a PO Box ZIP code?

21205 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21205 ZIP Code — Baltimore, Maryland (Baltimore City).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21205

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