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/KS/RILEY

Riley ZIP code, Kansas

The ZIP code for Riley, KS is 66531, and its area code is 785.

USPS city name
1 ZIP code
Population
943
Area code
785
State
Kansas

Riley in numbers

About 943 people live in Riley, in 338 households. The median household income is $93,750 a year, 26% above the Kansas median of $74,275 (US: $80,734). The median owner-occupied home is valued at $163,100 (25% below the Kansas median), and median gross rent is $1,203 a month. The median age is 37.3; 30.3% of adults 25 and over hold a bachelor's degree or higher (35.6% across Kansas); the average commute takes 27 minutes.

Population943Riley943
Households338Riley338
Median age37.3Riley37.3Kansas37.4US 38.9
Median household income$93,750Riley$93,750Kansas$74,275US $80,734
Median home value$163,100Riley$163,100Kansas$217,200US $332,700
Median gross rent$1,203Riley$1,203Kansas$1,060US $1,413
Bachelor's degree or higher30.3%Riley30.3%Kansas35.6%US 35.7%
Mean commute27.4 minRiley27.4 minKansas19.7 minUS 26.4 min
Population density1,856 / sq miRiley1,856 / sq mi

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

ZIP codes addressed as Riley

ZIP codes with the USPS city name Riley
ZIP City Type Population Median income Median home
66531 Riley , KS Standard 1,256 $79,063 $188,000

Map of Riley ZIP codes

66531

The ZIP codes of Riley, KS, 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 Riley

The nearest larger towns are Wakefield (1,031 people, 12 mi), Fort Riley (8,606 people, 13 mi) and Manhattan (54,239 people, 14 mi).

Towns near Riley
TownPopulationDistance
Fort Riley 8,606 13.4 mi
Manhattan 54,239 14.1 mi
Clay Center 4,132 17.0 mi
Junction City 22,331 18.8 mi
Wamego 4,386 28.4 mi

More nearby: every ZIP code in Riley County · Kansas ZIP codes

Cite this page

zipcodes.pro. “Riley, KS ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ks/riley

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