Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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/04101

04101

ZIP 04101 is in Portland, Maine, in Cumberland County; area code 207; Eastern time. Portland has 9 ZIP codes in all.

Type
Standard
Time zone
America/New_York
County
Cumberland
Population
18,431
Coordinates
43.6626, -70.2579
☼ Live from 04101 — Portland, ME

Weather right now

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Local time: —

Where 04101 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 04101
  • 🔢 Type 04101 into a pocket calculator and turn it upside down: IOIhO — not quite a word, sorry.
  • ➕ As a number, 4,101 = 3 × 1367. Its digits add up to 6, a total 90 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1000000000101
  • 🏠 Its numerical neighbours: 04098 (Westbrook, ME, 6 mi away) and 04102 (Portland, ME, 2 mi away).
  • 🔄 Backwards, 04101 becomes 10140, which is not a ZIP code at all.
  • 👥 16 other ZIP codes are made of exactly the same digits (01014, 01041, 01104, 04011, 04110, 10014, …). The farthest-flung twin is 40110 in Clermont, KY, 895 miles away.
  • 🧭 Farther north than 86% of all ZIP codes, and farther east than 97%.
  • 🎯1,476 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 04101 and you would come out at 43.66°S, 109.74°E — 875 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 27m of daylight. Shortest: 8h 55m.
  • 📏 At 2.0 square miles of land, 04101 is bigger than 12% of ZIP codes — room for about 1.5 Central Parks.
🌙 The sky over 04101 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population18,431This ZIP18,431
Households10,608This ZIP10,608
Housing units11,818This ZIP11,818
Median age35.8This ZIP35.8Maine44.8US 38.9
Median household income$63,880This ZIP$63,880Maine$74,733US $80,734
Median home value$617,600This ZIP$617,600Maine$296,600US $332,700
Median gross rent$1,566This ZIP$1,566Maine$1,139US $1,413
Bachelor's degree or higher58.1%This ZIP58.1%
Mean commute19.3 minThis ZIP19.3 min
Population density9,088.3 / sq miThis ZIP9,088.3 / sq mi

Business and tax activity

Business establishments2,071This ZIP2,071
Employees39,563This ZIP39,563
Annual payroll$2,770,128,000This ZIP$2,770,128,000
Tax returns filed10,120This ZIP10,120
Total adjusted gross income$912,665,000This ZIP$912,665,000

Land area

Land area2.03 sq miThis ZIP2.03 sq mi
Water area0.90 sq miThis ZIP0.90 sq mi

Other place names in 04101

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

ZIP codes near 04101

ZIPCityDistance
04104 Portland, ME 0.2 mi
04112 Portland, ME 0.2 mi
04122 Portland, ME 0.2 mi
04123 Portland, ME 0.2 mi
04124 Portland, ME 0.2 mi
04116 South Portland, ME 1.7 mi
04109 Portland, ME 1.8 mi
04102 Portland, ME 2.1 mi
04106 South Portland, ME 2.6 mi
04103 Portland, ME 2.7 mi

Find every ZIP code within 10 miles of 04101 →

Questions about this ZIP code

Where is ZIP code 04101?

04101 is in Portland, Maine, in Cumberland County, part of the Portland-South Portland, ME metropolitan area. Its published point location is 43.6626, -70.2579.

What county is 04101 in?

04101 lies in Cumberland County.

What area code is 04101?

Portland uses area code 207, from NANPA's telephone records.

What time zone is 04101 in?

04101 uses America/New_York.

How many people live in 04101?

About 18,431 people live in ZIP code 04101, in 10,608 households, at 9,088.3 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 04101?

$63,880 a year, against $74,733 across Maine.

What ZIP codes are near 04101?

The closest are 04104 (0.2 mi), 04112 (0.2 mi), 04122 (0.2 mi), 04123 (0.2 mi) and 04124 (0.2 mi).

Is 04101 a PO Box ZIP code?

04101 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “04101 ZIP Code — Portland, Maine (Cumberland County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/04101

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