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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/15221

15221

ZIP 15221 is in Pittsburgh, Pennsylvania, in Allegheny County; area codes 412 and 878; Eastern time. Pittsburgh has 75 ZIP codes in all.

Type
Standard
Time zone
America/New_York
County
Allegheny
Metro area
Pittsburgh, PA
Population
29,374
Coordinates
40.4355, -79.8658
☼ Live from 15221 — Pittsburgh, PA

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Local time: —

Where 15221 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 15221
  • 🔢 Type 15221 into a pocket calculator and turn it upside down: IZZSI — not quite a word, sorry.
  • ➕ As a number, 15,221 = 31 × 491. Its digits add up to 11, a total 714 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11101101110101
  • 🏠 Its numerical neighbours: 15220 (Pittsburgh, PA, 10 mi away) and 15222 (Pittsburgh, PA, 7 mi away).
  • 🔄 Backwards, 15221 becomes 12251, which is not a ZIP code at all.
  • 👥 17 other ZIP codes are made of exactly the same digits (11225, 11252, 12125, 12512, 12521, 15122, …). The farthest-flung twin is 52211 in Brooklyn, IA, 661 miles away.
  • 🧭 Farther north than 60% of all ZIP codes, and farther east than 74%.
  • 🎯988 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 15221 and you would come out at 40.44°S, 100.13°E — 1,052 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 04m of daylight. Shortest: 9h 17m.
  • 📏 At 6.2 square miles of land, 15221 is bigger than 21% of ZIP codes — room for about 4.7 Central Parks.
🌙 The sky over 15221 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population29,374This ZIP29,374
Households14,685This ZIP14,685
Housing units17,268This ZIP17,268
Median age39.0This ZIP39.0Pennsylvania40.9US 38.9
Median household income$55,028This ZIP$55,028Pennsylvania$77,971US $80,734
Median home value$171,300This ZIP$171,300Pennsylvania$254,500US $332,700
Median gross rent$997This ZIP$997Pennsylvania$1,209US $1,413
Bachelor's degree or higher41.8%This ZIP41.8%
Mean commute28.2 minThis ZIP28.2 min
Population density4,730.1 / sq miThis ZIP4,730.1 / sq mi

Business and tax activity

Business establishments502This ZIP502
Employees7,950This ZIP7,950
Annual payroll$368,821,000This ZIP$368,821,000
Tax returns filed14,170This ZIP14,170
Total adjusted gross income$916,406,000This ZIP$916,406,000

Land area

Land area6.21 sq miThis ZIP6.21 sq mi
Water area0.01 sq miThis ZIP0.01 sq mi

Other place names in 15221

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

ZIP codes near 15221

ZIPCityDistance
15218 Pittsburgh, PA 1.5 mi
15208 Pittsburgh, PA 2.2 mi
15104 Braddock, PA 2.2 mi
15112 East Pittsburgh, PA 2.6 mi
15145 Turtle Creek, PA 2.7 mi
15235 Pittsburgh, PA 2.8 mi
15217 Pittsburgh, PA 2.9 mi
15120 Homestead, PA 3.5 mi
15206 Pittsburgh, PA 3.6 mi
15232 Pittsburgh, PA 3.7 mi

Find every ZIP code within 10 miles of 15221 →

Questions about this ZIP code

Where is ZIP code 15221?

15221 is in Pittsburgh, Pennsylvania, in Allegheny County, part of the Pittsburgh, PA metropolitan area. Its published point location is 40.4355, -79.8658.

What county is 15221 in?

15221 lies in Allegheny County.

What area code is 15221?

Pittsburgh uses area codes 412 and 878, from NANPA's telephone records.

What time zone is 15221 in?

15221 uses America/New_York.

How many people live in 15221?

About 29,374 people live in ZIP code 15221, in 14,685 households, at 4,730.1 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 15221?

$55,028 a year, against $77,971 across Pennsylvania.

What ZIP codes are near 15221?

The closest are 15218 (1.5 mi), 15208 (2.2 mi), 15104 (2.2 mi), 15112 (2.6 mi) and 15145 (2.7 mi).

Is 15221 a PO Box ZIP code?

15221 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “15221 ZIP Code — Pittsburgh, Pennsylvania (Allegheny County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/15221

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