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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/48028

48028

ZIP 48028 is Harsens Island, Michigan, in St. Clair County; area code 810; Eastern time.

Type
Standard
Time zone
America/Detroit
County
St. Clair
Population
1,272
Coordinates
42.5802, -82.6166
☼ Live from 48028 — Harsens Island, MI

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Local time: —

Where 48028 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 48028
  • 🔢 Type 48028 into a pocket calculator and turn it upside down: BZOBh — not quite a word, sorry.
  • ➕ As a number, 48,028 = 2 × 2 × 12007. Its digits add up to 22, a total 2,607 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1011101110011100
  • 🏠 Its numerical neighbours: 48027 (Goodells, MI, 25 mi away) and 48030 (Hazel Park, MI, 26 mi away).
  • 🔄 Backwards, 48028 becomes 82084 — and that is a real ZIP code: Tie Siding, WY, 1,180 miles away.
  • 👥 27 other ZIP codes are made of exactly the same digits (04288, 08248, 08824, 20848, 20884, 24088, …). The farthest-flung twin is 88042 in Hillsboro, NM, 1,514 miles away.
  • 🧭 Farther north than 80% of all ZIP codes, and farther east than 64%.
  • 🎯850 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 48028 and you would come out at 42.58°S, 97.38°E — 1,249 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 19m of daylight. Shortest: 9h 03m.
  • 📏 At 17.8 square miles of land, 48028 is bigger than 35% of ZIP codes — room for about 13 Central Parks.
🌙 The sky over 48028 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,272This ZIP1,272
Households684This ZIP684
Housing units1,589This ZIP1,589
Median age65.6This ZIP65.6Michigan40.2US 38.9
Median household income$109,730This ZIP$109,730Michigan$72,875US $80,734
Median home value$390,800This ZIP$390,800Michigan$231,600US $332,700
Bachelor's degree or higher29.0%This ZIP29.0%
Mean commute38.9 minThis ZIP38.9 min
Population density71.6 / sq miThis ZIP71.6 / sq mi

Business and tax activity

Business establishments21This ZIP21
Employees57This ZIP57
Annual payroll$4,618,000This ZIP$4,618,000
Tax returns filed550This ZIP550
Total adjusted gross income$55,544,000This ZIP$55,544,000

Land area

Land area17.78 sq miThis ZIP17.78 sq mi
Water area14.62 sq miThis ZIP14.62 sq mi

ZIP codes near 48028

ZIPCityDistance
48001 Algonac, MI 4.4 mi
48039 Marine City, MI 8.6 mi
48023 Fair Haven, MI 8.8 mi
48045 Harrison Township, MI 10.2 mi
48047 New Baltimore, MI 10.3 mi
48064 Casco, MI 13.0 mi
48051 New Baltimore, MI 13.1 mi
48046 Mount Clemens, MI 13.3 mi
48043 Mount Clemens, MI 13.5 mi
48054 East China, MI 13.9 mi

Find every ZIP code within 10 miles of 48028 →

Questions about this ZIP code

Where is ZIP code 48028?

48028 is in Harsens Island, Michigan, in St. Clair County, part of the Detroit-Warren-Dearborn, MI metropolitan area. Its published point location is 42.5802, -82.6166.

What county is 48028 in?

48028 lies in St. Clair County.

What area code is 48028?

Harsens Island uses area code 810, from NANPA's telephone records.

What time zone is 48028 in?

48028 uses America/Detroit.

How many people live in 48028?

About 1,272 people live in ZIP code 48028, in 684 households, at 71.6 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 48028?

$109,730 a year, against $72,875 across Michigan.

What ZIP codes are near 48028?

The closest are 48001 (4.4 mi), 48039 (8.6 mi), 48023 (8.8 mi), 48045 (10.2 mi) and 48047 (10.3 mi).

Is 48028 a PO Box ZIP code?

48028 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “48028 ZIP Code — Harsens Island, Michigan (St. Clair County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/48028

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