Riley, KS ZIP Code

ZIP code, county, time zone and coordinates of Riley, Kansas

The ZIP code of Riley, KS is 66531. It is in Riley County.

Mailing address format for Riley

John Smith
123 Main St
RILEY KS 66531
USA

USPS prefers capital letters without punctuation. Check the exact ZIP+4 for a street address on the USPS website.

ZIP code	Population	Area
66531	—	35.2 sq mi	Main

ZIP Code Tabulation Areas (ZCTA), U.S. Census Bureau. A ZCTA can cover parts of more than one town.

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What is the ZIP code for Riley, KS?

The main ZIP code for Riley, KS is 66531.

How many ZIP codes does Riley have?

Riley has 1 ZIP code.

What county is Riley, KS in?

Riley is in Riley County, Kansas.

What time zone is Riley in?

Riley is in the America/Chicago time zone (CST, UTC-06:00 right now).

What are the coordinates of Riley?

Latitude 39.29922, longitude -96.82778.

Last updated: November 14, 2026