21212
ZIP 21212 is in Baltimore, Maryland, mostly 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
- County
- Baltimore city +1 more
- Metro area
- Baltimore-Columbia-Towson, MD
- Population
- 33,974
- Coordinates
- 39.3673, -76.6146
Weather right now
Asking the National Weather Service…
Where 21212 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.
- 🔢 Type 21212 into a pocket calculator and turn it upside down: ZIZIZ — not quite a word, sorry.
- ⇆21212 reads the same backwards. It is one of only 412 palindromic ZIP codes.
- ➕ As a number, 21,212 = 2 × 2 × 5303. Its digits add up to 8, a total 251 other ZIP codes share.
- 💾In binary, the way a computer stores it:
101001011011100 - 🏠 Its numerical neighbours: 21211 (Baltimore, MD, 3 mi away) and 21213 (Baltimore, MD, 4 mi away).
- 👥 7 other ZIP codes are made of exactly the same digits (11222, 12122, 12212, 21122, 21221, 22121, …). The farthest-flung twin is 12212 in Albany, NY, 274 miles away.
- 🧭 Farther north than 51% of all ZIP codes, and farther east than 83%.
- 🎯1,167 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 21212 and you would come out at 39.37°S, 103.39°E — 866 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 57m of daylight. Shortest: 9h 23m.
- 📏 At 4.6 square miles of land, 21212 is bigger than 18% of ZIP codes — room for about 3.5 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 33,974This ZIP33,974 |
|---|---|
| Households | 12,971This ZIP12,971 |
| Housing units | 13,827This ZIP13,827 |
| Median age | 38.5This ZIP38.5Maryland39.4US 38.9 |
| Median household income | $96,685This ZIP$96,685Maryland$103,678US $80,734 |
| Median home value | $373,700This ZIP$373,700Maryland$419,900US $332,700 |
| Median gross rent | $1,368This ZIP$1,368Maryland$1,705US $1,413 |
| Bachelor's degree or higher | 56.8%This ZIP56.8% |
| Mean commute | 28.7 minThis ZIP28.7 min |
| Population density | 7,408.2 / sq miThis ZIP7,408.2 / sq mi |
Business and tax activity
| Business establishments | 514This ZIP514 |
|---|---|
| Employees | 4,545This ZIP4,545 |
| Annual payroll | $198,008,000This ZIP$198,008,000 |
| Tax returns filed | 14,210This ZIP14,210 |
| Total adjusted gross income | $2,003,831,000This ZIP$2,003,831,000 |
Land area
| Land area | 4.59 sq miThis ZIP4.59 sq mi |
|---|---|
| Water area | 0.00 sq miThis ZIP0.00 sq mi |
Counties 21212 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Baltimore city | 56.6% |
| Baltimore County | 43.4% |
Other place names in 21212
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 21212
| ZIP | City | Distance |
|---|---|---|
21210 | Baltimore, MD | 1.3 mi |
21285 | Towson, MD | 1.4 mi |
21239 | Baltimore, MD | 1.5 mi |
21252 | Towson, MD | 1.9 mi |
21251 | Baltimore, MD | 2.2 mi |
21284 | Towson, MD | 2.5 mi |
21209 | Baltimore, MD | 2.6 mi |
21218 | Baltimore, MD | 2.7 mi |
21204 | Towson, MD | 2.8 mi |
21214 | Baltimore, MD | 2.9 mi |
Find every ZIP code within 10 miles of 21212 →
Questions about this ZIP code
Where is ZIP code 21212?
21212 is in Baltimore, Maryland, in Baltimore city, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.3673, -76.6146.
What county is 21212 in?
21212 spans 2 counties: Baltimore city and Baltimore County. Most of it falls in Baltimore city, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.
What area code is 21212?
Baltimore uses area codes 410, 443 and 667, from NANPA's telephone records.
What time zone is 21212 in?
21212 uses America/New_York.
How many people live in 21212?
About 33,974 people live in ZIP code 21212, in 12,971 households, at 7,408.2 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 21212?
$96,685 a year, against $103,678 across Maryland.
What ZIP codes are near 21212?
The closest are 21210 (1.3 mi), 21285 (1.4 mi), 21239 (1.5 mi), 21252 (1.9 mi) and 21251 (2.2 mi).
Is 21212 a PO Box ZIP code?
21212 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “21212 ZIP Code — Baltimore, Maryland (Baltimore City).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21212
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/21212.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.