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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/48118

48118

ZIP 48118 is Chelsea, Michigan, in Washtenaw County; area code 734; Eastern time.

Type
Standard
Time zone
America/Detroit
County
Washtenaw
Metro area
Ann Arbor, MI
Population
13,246
Coordinates
42.3122, -84.0341
☼ Live from 48118 — Chelsea, MI

Weather right now

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Local time: —

Where 48118 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 48118
  • 🔢 Type 48118 into a pocket calculator and turn it upside down: BIIBh — not quite a word, sorry.
  • ➕ As a number, 48,118 = 2 × 7 × 7 × 491. Its digits add up to 22, a total 2,607 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1011101111110110
  • 🏠 Its numerical neighbours: 48117 (Carleton, MI, 37 mi away) and 48120 (Dearborn, MI, 44 mi away).
  • 🔄 Backwards, 48118 becomes 81184, which is not a ZIP code at all.
  • 👥 9 other ZIP codes are made of exactly the same digits (14818, 14881, 18814, 48811, 81148, 81418, …). The farthest-flung twin is 84118 in Salt Lake City, UT, 1,447 miles away.
  • 🧭 Farther north than 78% of all ZIP codes, and farther east than 60%.
  • 🎯776 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 48118 and you would come out at 42.31°S, 95.97°E — 1,304 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 17m of daylight. Shortest: 9h 05m.
  • 📏 At 86.2 square miles of land, 48118 is bigger than 74% of ZIP codes — room for about 65 Central Parks.
🌙 The sky over 48118 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population13,246This ZIP13,246
Households5,733This ZIP5,733
Housing units5,964This ZIP5,964
Median age48.3This ZIP48.3Michigan40.2US 38.9
Median household income$88,278This ZIP$88,278Michigan$72,875US $80,734
Median home value$357,200This ZIP$357,200Michigan$231,600US $332,700
Median gross rent$1,636This ZIP$1,636Michigan$1,129US $1,413
Bachelor's degree or higher51.3%This ZIP51.3%
Mean commute27.0 minThis ZIP27.0 min
Population density153.6 / sq miThis ZIP153.6 / sq mi

Business and tax activity

Business establishments362This ZIP362
Employees6,505This ZIP6,505
Annual payroll$358,713,000This ZIP$358,713,000
Tax returns filed7,080This ZIP7,080
Total adjusted gross income$774,093,000This ZIP$774,093,000

Land area

Land area86.25 sq miThis ZIP86.25 sq mi
Water area4.19 sq miThis ZIP4.19 sq mi

Other place names in 48118

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

ZIP codes near 48118

ZIPCityDistance
48130 Dexter, MI 7.3 mi
49240 Grass Lake, MI 7.9 mi
48103 Ann Arbor, MI 10.2 mi
48158 Manchester, MI 10.8 mi
48106 Ann Arbor, MI 10.9 mi
48107 Ann Arbor, MI 10.9 mi
48113 Ann Arbor, MI 10.9 mi
48137 Gregory, MI 11.2 mi
48169 Pinckney, MI 11.3 mi
48115 Bridgewater, MI 12.2 mi

Find every ZIP code within 10 miles of 48118 →

Questions about this ZIP code

Where is ZIP code 48118?

48118 is in Chelsea, Michigan, in Washtenaw County, part of the Ann Arbor, MI metropolitan area. Its published point location is 42.3122, -84.0341.

What county is 48118 in?

48118 lies in Washtenaw County.

What area code is 48118?

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

What time zone is 48118 in?

48118 uses America/Detroit.

How many people live in 48118?

About 13,246 people live in ZIP code 48118, in 5,733 households, at 153.6 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 48118?

$88,278 a year, against $72,875 across Michigan.

What ZIP codes are near 48118?

The closest are 48130 (7.3 mi), 49240 (7.9 mi), 48103 (10.2 mi), 48158 (10.8 mi) and 48106 (10.9 mi).

Is 48118 a PO Box ZIP code?

48118 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “48118 ZIP Code — Chelsea, Michigan (Washtenaw County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/48118

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