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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/03904

03904

ZIP 03904 is Kittery, Maine, in York County; area code 207; Eastern time.

Type
Standard
Time zone
America/New_York
County
York
Population
8,389
Coordinates
43.1100, -70.7338
☼ Live from 03904 — Kittery, ME

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Where 03904 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 03904
  • 🔢 Type 03904 into a pocket calculator and turn it upside down: hOGEO — not quite a word, sorry.
  • ➕ As a number, 3,904 = 2 × 2 × 2 × 2 × 2 × 2 × 61. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 111101000000
  • 🏠 Its numerical neighbours: 03903 (Eliot, ME, 3 mi away) and 03905 (Kittery Point, ME, 10 mi away).
  • 🔄 Backwards, 03904 becomes 40930 — and that is a real ZIP code: Dewitt, KY, 811 miles away.
  • 👥 25 other ZIP codes are made of exactly the same digits (00934, 03049, 04039, 04093, 04903, 04930, …). The farthest-flung twin is 09034 in APO AE, a military post office, 3,579 miles away.
  • 🧭 Farther north than 83% of all ZIP codes, and farther east than 97%.
  • 🎯1,452 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 03904 and you would come out at 43.11°S, 109.27°E — 851 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 23m of daylight. Shortest: 8h 59m.
  • 📏 At 10.9 square miles of land, 03904 is bigger than 28% of ZIP codes — room for about 8.3 Central Parks.
🌙 The sky over 03904 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population8,389This ZIP8,389
Households3,955This ZIP3,955
Housing units4,411This ZIP4,411
Median age46.4This ZIP46.4Maine44.8US 38.9
Median household income$85,084This ZIP$85,084Maine$74,733US $80,734
Median home value$448,900This ZIP$448,900Maine$296,600US $332,700
Median gross rent$1,651This ZIP$1,651Maine$1,139US $1,413
Bachelor's degree or higher41.4%This ZIP41.4%
Mean commute18.8 minThis ZIP18.8 min
Population density768.4 / sq miThis ZIP768.4 / sq mi

Business and tax activity

Business establishments329This ZIP329
Employees3,063This ZIP3,063
Annual payroll$123,094,000This ZIP$123,094,000
Tax returns filed4,490This ZIP4,490
Total adjusted gross income$418,213,000This ZIP$418,213,000

Land area

Land area10.92 sq miThis ZIP10.92 sq mi
Water area1.58 sq miThis ZIP1.58 sq mi

Other place names in 03904

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

ZIP codes near 03904

ZIPCityDistance
03802 Portsmouth, NH 3.0 mi
03803 Portsmouth, NH 3.0 mi
03804 Portsmouth, NH 3.0 mi
03903 Eliot, ME 3.3 mi
03854 New Castle, NH 3.4 mi
03801 Portsmouth, NH 4.4 mi
03909 York, ME 4.8 mi
03911 York Harbor, ME 5.2 mi
03870 Rye, NH 6.4 mi
03840 Greenland, NH 7.4 mi

Find every ZIP code within 10 miles of 03904 →

Questions about this ZIP code

Where is ZIP code 03904?

03904 is in Kittery, Maine, in York County, part of the Portland-South Portland, ME metropolitan area. Its published point location is 43.1100, -70.7338.

What county is 03904 in?

03904 lies in York County.

What area code is 03904?

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

What time zone is 03904 in?

03904 uses America/New_York.

How many people live in 03904?

About 8,389 people live in ZIP code 03904, in 3,955 households, at 768.4 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 03904?

$85,084 a year, against $74,733 across Maine.

What ZIP codes are near 03904?

The closest are 03802 (3 mi), 03803 (3 mi), 03804 (3 mi), 03903 (3.3 mi) and 03854 (3.4 mi).

Is 03904 a PO Box ZIP code?

03904 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “03904 ZIP Code — Kittery, Maine (York County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/03904

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