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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/16001

16001

ZIP 16001 is in Butler, Pennsylvania, in Butler County; area codes 724, 878 and 412; Eastern time. Butler has 3 ZIP codes; the others are 16002 and 16003.

Type
Standard
Time zone
America/New_York
County
Butler
Metro area
Pittsburgh, PA
Population
39,234
Coordinates
40.9100, -79.9452
☼ Live from 16001 — Butler, PA

Weather right now

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Where 16001 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 16001
  • 🔢 Type 16001 into a pocket calculator and turn it upside down: IOOgI — not quite a word, sorry.
  • ➕ 16001 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 8, a total 251 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11111010000001
  • 🏠 Its numerical neighbours: 15963 (Windber, PA, 77 mi away) and 16002 (Butler, PA, 8 mi away).
  • 🔄 Backwards, 16001 becomes 10061, which is not a ZIP code at all.
  • 👥 18 other ZIP codes are made of exactly the same digits (00611, 01061, 01106, 01601, 01610, 06011, …). The farthest-flung twin is 00611 in Angeles, PR, 1,747 miles away.
  • 🧭 Farther north than 66% of all ZIP codes, and farther east than 74%.
  • 🎯982 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 16001 and you would come out at 40.91°S, 100.05°E — 1,072 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 07m of daylight. Shortest: 9h 14m.
  • 📏 At 75.8 square miles of land, 16001 is bigger than 71% of ZIP codes — room for about 58 Central Parks.
🌙 The sky over 16001 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population39,234This ZIP39,234
Households17,900This ZIP17,900
Housing units19,675This ZIP19,675
Median age44.9This ZIP44.9Pennsylvania40.9US 38.9
Median household income$63,635This ZIP$63,635Pennsylvania$77,971US $80,734
Median home value$199,100This ZIP$199,100Pennsylvania$254,500US $332,700
Median gross rent$851This ZIP$851Pennsylvania$1,209US $1,413
Bachelor's degree or higher27.6%This ZIP27.6%
Mean commute24.6 minThis ZIP24.6 min
Population density517.5 / sq miThis ZIP517.5 / sq mi

Business and tax activity

Business establishments1,112This ZIP1,112
Employees19,420This ZIP19,420
Annual payroll$846,739,000This ZIP$846,739,000
Tax returns filed19,670This ZIP19,670
Total adjusted gross income$1,302,068,000This ZIP$1,302,068,000

Land area

Land area75.81 sq miThis ZIP75.81 sq mi
Water area1.29 sq miThis ZIP1.29 sq mi

Other place names in 16001

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

ZIP codes near 16001

ZIPCityDistance
16017 Boyers, PA 1.2 mi
16018 Boyers, PA 1.2 mi
16045 Lyndora, PA 4.2 mi
16003 Butler, PA 4.3 mi
16029 East Butler, PA 5.6 mi
16052 Prospect, PA 6.1 mi
16053 Renfrew, PA 7.1 mi
16061 West Sunbury, PA 7.3 mi
16027 Connoquenessing, PA 7.3 mi
16002 Butler, PA 8.1 mi

Find every ZIP code within 10 miles of 16001 →

Questions about this ZIP code

Where is ZIP code 16001?

16001 is in Butler, Pennsylvania, in Butler County, part of the Pittsburgh, PA metropolitan area. Its published point location is 40.9100, -79.9452.

What county is 16001 in?

16001 lies in Butler County.

What area code is 16001?

Butler uses area codes 724, 878 and 412, from NANPA's telephone records.

What time zone is 16001 in?

16001 uses America/New_York.

How many people live in 16001?

About 39,234 people live in ZIP code 16001, in 17,900 households, at 517.5 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 16001?

$63,635 a year, against $77,971 across Pennsylvania.

What ZIP codes are near 16001?

The closest are 16017 (1.2 mi), 16018 (1.2 mi), 16045 (4.2 mi), 16003 (4.3 mi) and 16029 (5.6 mi).

Is 16001 a PO Box ZIP code?

16001 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “16001 ZIP Code — Butler, Pennsylvania (Butler County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/16001

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