48189
ZIP 48189 is Whitmore Lake, Michigan, mostly in Washtenaw County; area code 734; Eastern time.
- Type
- Standard
- Time zone
- America/Detroit
- County
- Washtenaw +1 more
- Metro area
- Ann Arbor, MI
- Population
- 13,893
- Coordinates
- 42.4095, -83.7830
Weather right now
Asking the National Weather Service…
Where 48189 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.
- 🔢 Type 48189 into a pocket calculator and turn it upside down: GBIBh — not quite a word, sorry.
- ➕ As a number, 48,189 = 3 × 16063. Its digits add up to 30, a total 1,024 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1011110000111101 - 🏠 Its numerical neighbours: 48188 (Canton, MI, 17 mi away) and 48190 (Whittaker, MI, 21 mi away).
- 🔄 Backwards, 48189 becomes 98184, which is not a ZIP code at all.
- 👥 19 other ZIP codes are made of exactly the same digits (14889, 14898, 19884, 48198, 48819, 48891, …). The farthest-flung twin is 94188 in San Francisco, CA, 2,048 miles away.
- 🧭 Farther north than 78% of all ZIP codes, and farther east than 61%.
- 🎯789 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 48189 and you would come out at 42.41°S, 96.22°E — 1,296 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 17m of daylight. Shortest: 9h 04m.
- 📏 At 34.2 square miles of land, 48189 is bigger than 49% of ZIP codes — room for about 26 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 13,893This ZIP13,893 |
|---|---|
| Households | 5,833This ZIP5,833 |
| Housing units | 6,107This ZIP6,107 |
| Median age | 41.6This ZIP41.6Michigan40.2US 38.9 |
| Median household income | $87,145This ZIP$87,145Michigan$72,875US $80,734 |
| Median home value | $313,400This ZIP$313,400Michigan$231,600US $332,700 |
| Median gross rent | $1,246This ZIP$1,246Michigan$1,129US $1,413 |
| Bachelor's degree or higher | 38.7%This ZIP38.7% |
| Mean commute | 30.4 minThis ZIP30.4 min |
| Population density | 406.5 / sq miThis ZIP406.5 / sq mi |
Business and tax activity
| Business establishments | 269This ZIP269 |
|---|---|
| Employees | 2,809This ZIP2,809 |
| Annual payroll | $167,846,000This ZIP$167,846,000 |
| Tax returns filed | 6,950This ZIP6,950 |
| Total adjusted gross income | $647,480,000This ZIP$647,480,000 |
Land area
| Land area | 34.18 sq miThis ZIP34.18 sq mi |
|---|---|
| Water area | 2.25 sq miThis ZIP2.25 sq mi |
Counties 48189 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Washtenaw County | 69.5% |
| Livingston County | 30.5% |
Other place names in 48189
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 48189
| ZIP | City | Distance |
|---|---|---|
48139 | Hamburg, MI | 3.3 mi |
48143 | Lakeland, MI | 4.8 mi |
48116 | Brighton, MI | 6.7 mi |
48178 | South Lyon, MI | 6.8 mi |
48130 | Dexter, MI | 7.2 mi |
48105 | Ann Arbor, MI | 7.2 mi |
48109 | Ann Arbor, MI | 9.0 mi |
48169 | Pinckney, MI | 9.1 mi |
48165 | New Hudson, MI | 10.4 mi |
48175 | Salem, MI | 10.5 mi |
Find every ZIP code within 10 miles of 48189 →
Questions about this ZIP code
Where is ZIP code 48189?
48189 is in Whitmore Lake, Michigan, in Washtenaw County, part of the Ann Arbor, MI metropolitan area. Its published point location is 42.4095, -83.7830.
What county is 48189 in?
48189 spans 2 counties: Washtenaw County and Livingston County. Most of it falls in Washtenaw County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.
What area code is 48189?
Whitmore Lake uses area code 734, from NANPA's telephone records.
What time zone is 48189 in?
48189 uses America/Detroit.
How many people live in 48189?
About 13,893 people live in ZIP code 48189, in 5,833 households, at 406.5 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 48189?
$87,145 a year, against $72,875 across Michigan.
What ZIP codes are near 48189?
The closest are 48139 (3.3 mi), 48143 (4.8 mi), 48116 (6.7 mi), 48178 (6.8 mi) and 48130 (7.2 mi).
Is 48189 a PO Box ZIP code?
48189 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “48189 ZIP Code — Whitmore Lake, Michigan (Washtenaw County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/48189
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/48189.json Underlying data is public domain or openly licensed — sources, vintages and licences.