Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/KS/COUNTY/RILEY

Riley County, KS ZIP codes

There are 9 ZIP codes in Riley County, KS, in 6 towns, from 66442 to 66554. The largest are 66502 (Manhattan), 66503 (Manhattan) and 66442 (Fort Riley). 1 more crosses into it from a neighbouring county: 67447.

The county seat is Manhattan.

ZIP codes
9
Partly in it
1 more
Towns
6
County seat
Manhattan
County FIPS
20161
State
Kansas
Population
71,946
Median household income
$61,098
Land area
610 sq mi
Area code
785
Metro area
Manhattan

Riley County ZIP codes by town

Manhattan (county seat)
66502, 66503, 66505, 66506

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

ZIP codes partly in Riley County

This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Riley County.

Map of Riley County ZIP codes

664426644966502665036650566506665176653166554

The ZIP codes of Riley County, 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.

Riley County in numbers

About 71,946 people live in Riley County, in 27,695 households, the 7th most populous of Kansas's 105 counties. The median household income is $61,098 a year, 18% below the Kansas median of $74,275 (US: $80,734). The median owner-occupied home is valued at $237,100 (9% above the Kansas median), and median gross rent is $1,046 a month. The median age is 25.5; 48.9% of adults 25 and over hold a bachelor's degree or higher (35.6% across Kansas); the average commute takes 16 minutes.

Population71,946Riley71,946
Households27,695Riley27,695
Median age25.5Riley25.5Kansas37.4US 38.9
Median household income$61,098Riley$61,098Kansas$74,275US $80,734
Median home value$237,100Riley$237,100Kansas$217,200US $332,700
Median gross rent$1,046Riley$1,046Kansas$1,060US $1,413
Bachelor's degree or higher48.9%Riley48.9%Kansas35.6%US 35.7%
Mean commute16.3 minRiley16.3 minKansas19.7 minUS 26.4 min
Population density118 / sq miRiley118 / sq mi

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

Largest towns in Riley County

Largest towns in Riley County
TownZIP codesPopulation
Manhattan 4 54,239
Fort Riley 1 8,606
Ogden 1 1,696
Riley 1 943
Leonardville 1 514
Randolph 1 178

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Riley County.

Not sure you are in Riley County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Riley County, with figures

ZIP codes in Riley County
ZIP City Type Population Median income Median home
66442 Fort Riley , KS Standard 16,890 $51,610 —
66449 Leonardville , KS Standard 937 $90,089 $210,200
66502 Manhattan , KS Standard 43,693 $54,833 $223,100
66503 Manhattan , KS Standard 17,273 $97,846 $339,100
66505 Manhattan , KS No street area — — —
66506 Manhattan , KS Standard 3,155 — —
66517 Ogden , KS Standard 1,696 $68,421 $156,800
66531 Riley , KS Standard 1,256 $79,063 $188,000
66554 Randolph , KS Standard 770 $97,411 $194,400

Cite this page

zipcodes.pro. “Riley County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ks/county/riley

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