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 — STATE/KS/COUNTY/LYON

Lyon County, KS ZIP codes

There are 8 ZIP codes in Lyon County, KS, in 8 towns, from 66801 to 66868. The largest are 66801 (Emporia), 66835 (Americus) and 66865 (Olpe).

The county seat is Emporia.

ZIP codes
8
Towns
8
County seat
Emporia
County FIPS
20111
State
Kansas
Population
32,186
Median household income
$59,912
Land area
847 sq mi
Area code
620
Metro area
Emporia

Lyon County ZIP codes by town

Emporia (county seat)
66801

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.

Map of Lyon County ZIP codes

6680166830668336683566854668646686566868

The ZIP codes of Lyon 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.

Lyon County in numbers

About 32,186 people live in Lyon County, in 13,481 households, the 18th most populous of Kansas's 105 counties. The median household income is $59,912 a year, 19% below the Kansas median of $74,275 (US: $80,734). The median owner-occupied home is valued at $150,600 (31% below the Kansas median), and median gross rent is $817 a month. The median age is 33.1; 26.3% of adults 25 and over hold a bachelor's degree or higher (35.6% across Kansas); the average commute takes 15 minutes.

Population32,186Lyon32,186
Households13,481Lyon13,481
Median age33.1Lyon33.1Kansas37.4US 38.9
Median household income$59,912Lyon$59,912Kansas$74,275US $80,734
Median home value$150,600Lyon$150,600Kansas$217,200US $332,700
Median gross rent$817Lyon$817Kansas$1,060US $1,413
Bachelor's degree or higher26.3%Lyon26.3%Kansas35.6%US 35.7%
Mean commute14.8 minLyon14.8 minKansas19.7 minUS 26.4 min
Population density38 / sq miLyon38 / 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 Lyon County

Largest towns in Lyon County
TownZIP codesPopulation
Emporia 1 24,131
Americus 1 955
Olpe 1 565
Hartford 1 428
Allen 1 287
Neosho Rapids 1 276
Reading 1 198
Admire 1 144

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 Lyon County.

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

Every ZIP code in Lyon County, with figures

ZIP codes in Lyon County
ZIP City Type Population Median income Median home
66801 Emporia , KS Standard 27,585 $56,794 $152,700
66830 Admire , KS Standard 203 $57,109 $102,500
66833 Allen , KS Standard 641 $57,819 $126,600
66835 Americus , KS Standard 1,202 $81,000 $124,000
66854 Hartford , KS Standard 1,007 $96,250 $78,000
66864 Neosho Rapids , KS Standard 375 $37,422 $58,300
66865 Olpe , KS Standard 1,105 $93,333 $181,600
66868 Reading , KS Standard 620 $103,393 $150,000

Cite this page

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

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