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/IL/BUFFALO

Buffalo ZIP code, Illinois

The ZIP code for Buffalo, IL is 62515, and its area codes are 217 and 447.

USPS city name
1 ZIP code
Population
482
Area codes
217, 447

Buffalo in numbers

About 482 people live in Buffalo, in 197 households. The median household income is $56,250 a year, 33% below the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $112,100 (57% below the Illinois median), and median gross rent is $533 a month. The median age is 45.9; 25.6% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 24 minutes.

Population482Buffalo482
Households197Buffalo197
Median age45.9Buffalo45.9Illinois39.0US 38.9
Median household income$56,250Buffalo$56,250Illinois$83,390US $80,734
Median home value$112,100Buffalo$112,100Illinois$263,300US $332,700
Median gross rent$533Buffalo$533Illinois$1,274US $1,413
Bachelor's degree or higher25.6%Buffalo25.6%Illinois37.8%US 35.7%
Mean commute23.7 minBuffalo23.7 minIllinois27.8 minUS 26.4 min
Population density1,397 / sq miBuffalo1,397 / sq mi

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

ZIP codes addressed as Buffalo

ZIP codes with the USPS city name Buffalo
ZIP City Type Population Median income Median home
62515 Buffalo , IL Standard 902 $62,222 $143,700

Map of Buffalo ZIP codes

62515

The ZIP codes of Buffalo, IL, 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 Buffalo

The nearest larger towns are Dawson (536 people, 2.8 mi), Mechanicsburg (728 people, 3.6 mi) and Riverton (3,513 people, 6.8 mi).

Towns near Buffalo
TownPopulationDistance
Riverton 3,513 6.8 mi
Rochester 3,766 9.5 mi
Sherman 4,386 10.7 mi
Springfield 113,330 13.1 mi
Chatham 14,639 19.4 mi
Pawnee 2,738 20.0 mi
Taylorville 10,646 20.6 mi
Lincoln 13,281 20.9 mi
Forsyth 3,502 24.2 mi
Decatur 69,815 25.2 mi
Auburn 4,306 26.0 mi
Mount Zion 5,660 28.2 mi

More nearby: every ZIP code in Sangamon County · Illinois ZIP codes

Cite this page

zipcodes.pro. “Buffalo, IL ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/il/buffalo

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