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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/18901

18901

ZIP 18901 is in Doylestown, Pennsylvania, in Bucks County; area codes 267, 215 and 445; Eastern time. Doylestown has 2 ZIP codes; the other is 18902.

Type
Standard
Time zone
America/New_York
County
Bucks
Population
28,509
Coordinates
40.3048, -75.1508
☼ Live from 18901 — Doylestown, PA

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Local time: —

Where 18901 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 18901
  • 🔢 Type 18901 into a pocket calculator and turn it upside down: IOGBI — not quite a word, sorry.
  • ➕ As a number, 18,901 = 41 × 461. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100100111010101
  • 🏠 Its numerical neighbours: 18854 (Wysox, PA, 120 mi away) and 18902 (Doylestown, PA, 4 mi away).
  • 🔄 Backwards, 18901 becomes 10981 — and that is a real ZIP code: Sugar Loaf, NY, 84 miles away.
  • 👥 23 other ZIP codes are made of exactly the same digits (09811, 10918, 10981, 11980, 18091, 18109, …). The farthest-flung twin is 09811 in APO AE, a military post office, 6,436 miles away.
  • 🧭 Farther north than 59% of all ZIP codes, and farther east than 87%.
  • 🎯1,236 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 18901 and you would come out at 40.30°S, 104.85°E — 842 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 03m of daylight. Shortest: 9h 18m.
  • 📏 At 21.0 square miles of land, 18901 is bigger than 38% of ZIP codes — room for about 16 Central Parks.
🌙 The sky over 18901 today
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🌋 Shake report
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Source: USGS.

People and housing

Population28,509This ZIP28,509
Households11,336This ZIP11,336
Housing units11,774This ZIP11,774
Median age46.9This ZIP46.9Pennsylvania40.9US 38.9
Median household income$118,256This ZIP$118,256Pennsylvania$77,971US $80,734
Median home value$576,800This ZIP$576,800Pennsylvania$254,500US $332,700
Median gross rent$1,917This ZIP$1,917Pennsylvania$1,209US $1,413
Bachelor's degree or higher58.7%This ZIP58.7%
Mean commute24.4 minThis ZIP24.4 min
Population density1,359.4 / sq miThis ZIP1,359.4 / sq mi

Business and tax activity

Business establishments1,347This ZIP1,347
Employees19,316This ZIP19,316
Annual payroll$1,202,946,000This ZIP$1,202,946,000
Tax returns filed14,380This ZIP14,380
Total adjusted gross income$2,382,483,000This ZIP$2,382,483,000

Land area

Land area20.97 sq miThis ZIP20.97 sq mi
Water area0.77 sq miThis ZIP0.77 sq mi

Other place names in 18901

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

ZIP codes near 18901

ZIPCityDistance
18931 Lahaska, PA 3.0 mi
18991 Warminster, PA 3.0 mi
18914 Chalfont, PA 3.3 mi
18923 Fountainville, PA 3.5 mi
18916 Danboro, PA 3.6 mi
18976 Warrington, PA 3.9 mi
18902 Doylestown, PA 4.4 mi
18912 Buckingham, PA 4.6 mi
18925 Furlong, PA 4.9 mi
18922 Forest Grove, PA 4.9 mi

Find every ZIP code within 10 miles of 18901 →

Questions about this ZIP code

Where is ZIP code 18901?

18901 is in Doylestown, Pennsylvania, in Bucks County, part of the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metropolitan area. Its published point location is 40.3048, -75.1508.

What county is 18901 in?

18901 lies in Bucks County.

What area code is 18901?

Doylestown uses area codes 267, 215 and 445, from NANPA's telephone records.

What time zone is 18901 in?

18901 uses America/New_York.

How many people live in 18901?

About 28,509 people live in ZIP code 18901, in 11,336 households, at 1,359.4 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 18901?

$118,256 a year, against $77,971 across Pennsylvania.

What ZIP codes are near 18901?

The closest are 18931 (3 mi), 18991 (3 mi), 18914 (3.3 mi), 18923 (3.5 mi) and 18916 (3.6 mi).

Is 18901 a PO Box ZIP code?

18901 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “18901 ZIP Code — Doylestown, Pennsylvania (Bucks County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/18901

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