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 — CITY/MI/WILLIS

Willis ZIP code, Michigan

The ZIP code for Willis, MI is 48191, and its area code is 734.

USPS city name
1 ZIP code
Population
4,403
Area code
734

Willis in numbers

About 4,403 people live in Willis, in 1,662 households. The median household income is $102,833 a year, 41% above the Michigan median of $72,875 (US: $80,734). The median owner-occupied home is valued at $271,900 (17% above the Michigan median).

Population4,403Willis4,403
Households1,662Willis1,662
Median household income$102,833Willis$102,833Michigan$72,875US $80,734
Median home value$271,900Willis$271,900Michigan$231,600US $332,700

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the ZIP code addressed as Willis. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Willis

ZIP codes with the USPS city name Willis
ZIP City Type Population Median income Median home
48191 Willis , MI Standard 4,403 $102,833 $271,900

Map of Willis ZIP codes

48191

The ZIP codes of Willis, MI, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Willis

The nearest larger towns are Milan (5,987 people, 6.7 mi), Ypsilanti (19,857 people, 9.0 mi) and Saline (9,006 people, 11 mi).

Towns near Willis
TownPopulationDistance
Milan 5,987 6.7 mi
Belleville 3,910 7.0 mi
Ypsilanti 19,857 9.0 mi
Carleton 2,595 10.0 mi
Saline 9,006 11.4 mi
Dundee 5,744 11.9 mi
Romulus 24,831 12.4 mi
Ann Arbor 122,036 13.6 mi
Wayne 17,310 14.1 mi
Flat Rock 10,340 15.2 mi
West Monroe 2,711 15.9 mi
Westland 83,633 16.6 mi
Taylor 62,081 16.9 mi
Monroe 20,320 16.9 mi

More nearby: every ZIP code in Washtenaw County · Michigan ZIP codes

Cite this page

zipcodes.pro. “Willis, MI ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/mi/willis

Underlying data is public domain or openly licensed — sources, vintages and licences.