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Zip Code 66531 — Riley, KS

ZIP Code 66531 is associated with Riley, KS, in Riley County. The listed population estimate is 1,256; estimated density is 13.8 people per square mile. Among records with population estimates, it ranks #6 of 8 in Riley County and #305 of 699 in KS.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.311460, -96.834160)

Data MetricLocal Statistic
Postal / Zip Code66531
Primary CityRiley
State / ProvinceKS
CountyRiley
Total Population1,256
Population Density13.8 people/sq mi
TimezoneAmerica/Chicago

How 66531 Compares

MetricZIP 66531Riley County recordsKS records
Population estimate1,25685,670 (sum)2,947,026 (sum)
Population Density13.8 /sq mi----
County population rank#6 of 8----
State population rank#305 of 699----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in KS

ZIP CodeCityDistancePopulation estimate
ZIP 66449Leonardville5.5 mi937
ZIP 66503Manhattan8.6 mi17,273
ZIP 66554Randolph12.6 mi770
ZIP 66514Milford13.0 mi1,350
ZIP 66520Olsburg13.5 mi635

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →