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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 — CITY/MI/IRONWOOD

Ironwood ZIP code, Michigan

The ZIP code for Ironwood, MI is 49938, and its area code is 906.

USPS city name
1 ZIP code
Population
4,997
Area code
906

Ironwood in numbers

About 4,997 people live in Ironwood, in 2,596 households. The median household income is $41,250 a year, 43% below the Michigan median of $72,875 (US: $80,734). The median owner-occupied home is valued at $83,100 (64% below the Michigan median), and median gross rent is $622 a month. The median age is 47.9; 22.9% of adults 25 and over hold a bachelor's degree or higher (32.4% across Michigan); the average commute takes 18 minutes.

Population4,997Ironwood4,997
Households2,596Ironwood2,596
Median age47.9Ironwood47.9Michigan40.2US 38.9
Median household income$41,250Ironwood$41,250Michigan$72,875US $80,734
Median home value$83,100Ironwood$83,100Michigan$231,600US $332,700
Median gross rent$622Ironwood$622Michigan$1,129US $1,413
Bachelor's degree or higher22.9%Ironwood22.9%Michigan32.4%US 35.7%
Mean commute17.9 minIronwood17.9 minMichigan24.2 minUS 26.4 min
Population density760 / sq miIronwood760 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Ironwood city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Ironwood

ZIP codes with the USPS city name Ironwood
ZIP City Type Population Median income Median home
49938 Ironwood , MI Standard 7,460 $46,606 $104,000

Map of Ironwood ZIP codes

49938

The ZIP codes of Ironwood, 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 Ironwood

The nearest larger towns are Ashland, WI (7,902 people, 35 mi), Rhinelander, WI (8,316 people, 66 mi) and Houghton (8,474 people, 88 mi).

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

Cite this page

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

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