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/48103

48103

ZIP 48103 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
55,054
Coordinates
42.2614, -83.8465
☼ Live from 48103 — Ann Arbor, MI

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Where 48103 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 48103
  • 🔢 Type 48103 into a pocket calculator and turn it upside down: EOIBh — not quite a word, sorry.
  • ➕ As a number, 48,103 = 11 × 4373. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1011101111100111
  • 🏠 Its numerical neighbours: 48101 (Allen Park, MI, 33 mi away) and 48104 (Ann Arbor, MI, 7 mi away).
  • 🔄 Backwards, 48103 becomes 30184 — and that is a real ZIP code: White, GA, 556 miles away.
  • 👥 54 other ZIP codes are made of exactly the same digits (01438, 01834, 01843, 03814, 03841, 08314, …). The farthest-flung twin is 84013 in Cedar Valley, UT, 1,466 miles away.
  • 🧭 Farther north than 77% of all ZIP codes, and farther east than 60%.
  • 🎯785 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 48103 and you would come out at 42.26°S, 96.15°E — 1,294 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 16m of daylight. Shortest: 9h 05m.
  • 📏 At 66.5 square miles of land, 48103 is bigger than 67% of ZIP codes — room for about 51 Central Parks.
🌙 The sky over 48103 today
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🌋 Shake report
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Source: USGS.

People and housing

Population55,054This ZIP55,054
Households24,258This ZIP24,258
Housing units25,578This ZIP25,578
Median age39.7This ZIP39.7Michigan40.2US 38.9
Median household income$116,194This ZIP$116,194Michigan$72,875US $80,734
Median home value$471,700This ZIP$471,700Michigan$231,600US $332,700
Median gross rent$1,810This ZIP$1,810Michigan$1,129US $1,413
Bachelor's degree or higher75.3%This ZIP75.3%
Mean commute21.1 minThis ZIP21.1 min
Population density827.6 / sq miThis ZIP827.6 / sq mi

Business and tax activity

Business establishments1,478This ZIP1,478
Employees26,242This ZIP26,242
Annual payroll$1,431,584,000This ZIP$1,431,584,000
Tax returns filed27,880This ZIP27,880
Total adjusted gross income$3,810,390,000This ZIP$3,810,390,000

Land area

Land area66.53 sq miThis ZIP66.53 sq mi
Water area0.50 sq miThis ZIP0.50 sq mi

Other place names in 48103

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

ZIP codes near 48103

ZIPCityDistance
48106 Ann Arbor, MI 0.7 mi
48107 Ann Arbor, MI 0.7 mi
48113 Ann Arbor, MI 0.7 mi
48108 Ann Arbor, MI 6.5 mi
48104 Ann Arbor, MI 6.6 mi
48109 Ann Arbor, MI 7.4 mi
48115 Bridgewater, MI 7.7 mi
48130 Dexter, MI 7.8 mi
48176 Saline, MI 8.6 mi
48105 Ann Arbor, MI 8.9 mi

Find every ZIP code within 10 miles of 48103 →

Questions about this ZIP code

Where is ZIP code 48103?

48103 is in Ann Arbor, Michigan, in Washtenaw County, part of the Ann Arbor, MI metropolitan area. Its published point location is 42.2614, -83.8465.

What county is 48103 in?

48103 lies in Washtenaw County.

What area code is 48103?

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

What time zone is 48103 in?

48103 uses America/Detroit.

How many people live in 48103?

About 55,054 people live in ZIP code 48103, in 24,258 households, at 827.6 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 48103?

$116,194 a year, against $72,875 across Michigan.

What ZIP codes are near 48103?

The closest are 48106 (0.7 mi), 48107 (0.7 mi), 48113 (0.7 mi), 48108 (6.5 mi) and 48104 (6.6 mi).

Is 48103 a PO Box ZIP code?

48103 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “48103 ZIP Code — Ann Arbor, Michigan (Washtenaw County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/48103

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