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/RIVERDALE

Riverdale ZIP code, Michigan

The ZIP code for Riverdale, MI is 48877, and its area code is 989.

USPS city name
1 ZIP code
Population
216
Area code
989

Riverdale in numbers

About 216 people live in Riverdale, in 91 households. The median owner-occupied home is valued at $90,500 (61% below the Michigan median). The median age is 39.0; 16.5% of adults 25 and over hold a bachelor's degree or higher (32.4% across Michigan); the average commute takes 19 minutes.

Population216Riverdale216
Households91Riverdale91
Median age39.0Riverdale39.0Michigan40.2US 38.9
Median home value$90,500Riverdale$90,500Michigan$231,600US $332,700
Bachelor's degree or higher16.5%Riverdale16.5%Michigan32.4%US 35.7%
Mean commute18.5 minRiverdale18.5 minMichigan24.2 minUS 26.4 min
Population density313 / sq miRiverdale313 / sq mi

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

ZIP codes addressed as Riverdale

ZIP codes with the USPS city name Riverdale
ZIP City Type Population Median income Median home
48877 Riverdale , MI Standard 1,962 $64,653 $112,300

Map of Riverdale ZIP codes

48877

The ZIP codes of Riverdale, 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 Riverdale

The nearest larger towns are Elm Hall (228 people, 1.8 mi), Alma (9,396 people, 9.4 mi) and Crystal (1,114 people, 9.7 mi).

Towns near Riverdale
TownPopulationDistance
Alma 9,396 9.4 mi
St. Louis 7,367 11.7 mi
Ithaca 2,817 13.8 mi
Mount Pleasant 21,236 15.2 mi
Greenville 8,995 25.1 mi
Canadian Lakes 2,991 26.9 mi
Belding 5,960 27.9 mi

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

Cite this page

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

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