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/48104

48104

ZIP 48104 is in Ann Arbor, Michigan, in Washtenaw County; area code 734; Eastern time. Ann Arbor has 8 ZIP codes in all.

Type
Standard
Time zone
America/Detroit
County
Washtenaw
Metro area
Ann Arbor, MI
Population
43,979
Coordinates
42.2622, -83.7169
☼ Live from 48104 — Ann Arbor, MI

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Local time: —

Where 48104 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 48104
  • 🔢 Type 48104 into a pocket calculator and turn it upside down: hOIBh — not quite a word, sorry.
  • ➕ As a number, 48,104 = 2 × 2 × 2 × 7 × 859. Its digits add up to 17, a total 2,133 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1011101111101000
  • 🏠 Its numerical neighbours: 48103 (Ann Arbor, MI, 7 mi away) and 48105 (Ann Arbor, MI, 5 mi away).
  • 🔄 Backwards, 48104 becomes 40184, which is not a ZIP code at all.
  • 👥 27 other ZIP codes are made of exactly the same digits (01844, 04418, 04481, 04841, 14048, 14480, …). The farthest-flung twin is 84104 in Salt Lake City, UT, 1,460 miles away.
  • 🧭 Farther north than 77% of all ZIP codes, and farther east than 61%.
  • 🎯791 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 48104 and you would come out at 42.26°S, 96.28°E — 1,288 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 16m of daylight. Shortest: 9h 05m.
  • 📏 At 7.8 square miles of land, 48104 is bigger than 24% of ZIP codes — room for about 5.9 Central Parks.
🌙 The sky over 48104 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population43,979This ZIP43,979
Households17,526This ZIP17,526
Housing units19,300This ZIP19,300
Median age22.9This ZIP22.9Michigan40.2US 38.9
Median household income$64,231This ZIP$64,231Michigan$72,875US $80,734
Median home value$491,200This ZIP$491,200Michigan$231,600US $332,700
Median gross rent$1,639This ZIP$1,639Michigan$1,129US $1,413
Bachelor's degree or higher80.9%This ZIP80.9%
Mean commute18.8 minThis ZIP18.8 min
Population density5,641.9 / sq miThis ZIP5,641.9 / sq mi

Business and tax activity

Business establishments1,527This ZIP1,527
Employees23,935This ZIP23,935
Annual payroll$1,692,351,000This ZIP$1,692,351,000
Tax returns filed12,860This ZIP12,860
Total adjusted gross income$1,850,077,000This ZIP$1,850,077,000

Land area

Land area7.80 sq miThis ZIP7.80 sq mi
Water area0.23 sq miThis ZIP0.23 sq mi

Other place names in 48104

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

ZIP codes near 48104

ZIPCityDistance
48109 Ann Arbor, MI 2.1 mi
48108 Ann Arbor, MI 2.9 mi
48105 Ann Arbor, MI 4.6 mi
48197 Ypsilanti, MI 6.1 mi
48106 Ann Arbor, MI 6.2 mi
48107 Ann Arbor, MI 6.2 mi
48113 Ann Arbor, MI 6.2 mi
48103 Ann Arbor, MI 6.6 mi
48198 Ypsilanti, MI 6.7 mi
48176 Saline, MI 10.4 mi

Find every ZIP code within 10 miles of 48104 →

Questions about this ZIP code

Where is ZIP code 48104?

48104 is in Ann Arbor, Michigan, in Washtenaw County, part of the Ann Arbor, MI metropolitan area. Its published point location is 42.2622, -83.7169.

What county is 48104 in?

48104 lies in Washtenaw County.

What area code is 48104?

Ann Arbor uses area code 734, from NANPA's telephone records.

What time zone is 48104 in?

48104 uses America/Detroit.

How many people live in 48104?

About 43,979 people live in ZIP code 48104, in 17,526 households, at 5,641.9 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 48104?

$64,231 a year, against $72,875 across Michigan.

What ZIP codes are near 48104?

The closest are 48109 (2.1 mi), 48108 (2.9 mi), 48105 (4.6 mi), 48197 (6.1 mi) and 48106 (6.2 mi).

Is 48104 a PO Box ZIP code?

48104 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “48104 ZIP Code — Ann Arbor, Michigan (Washtenaw County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/48104

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