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/FRANKLIN

Franklin County, KS ZIP codes

There are 8 ZIP codes in Franklin County, KS, in 8 towns, from 66042 to 66095. The largest are 66067 (Ottawa), 66092 (Wellsville) and 66076 (Pomona).

The county seat is Ottawa.

ZIP codes
8
Towns
8
County seat
Ottawa
County FIPS
20059
State
Kansas
Population
26,106
Median household income
$77,207
Land area
572 sq mi
Area code
785
Metro area
Ottawa

Franklin County ZIP codes by town

Ottawa (county seat)
66067

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 Franklin County ZIP codes

6604266067660766607866079660806609266095

The ZIP codes of Franklin 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.

Franklin County in numbers

About 26,106 people live in Franklin County, in 10,409 households, the 23rd most populous of Kansas's 105 counties. The median household income is $77,207 a year, 4% above the Kansas median of $74,275 (US: $80,734). The median owner-occupied home is valued at $198,700 (9% below the Kansas median), and median gross rent is $1,042 a month. The median age is 39.7; 24.6% of adults 25 and over hold a bachelor's degree or higher (35.6% across Kansas); the average commute takes 23 minutes.

Population26,106Franklin26,106
Households10,409Franklin10,409
Median age39.7Franklin39.7Kansas37.4US 38.9
Median household income$77,207Franklin$77,207Kansas$74,275US $80,734
Median home value$198,700Franklin$198,700Kansas$217,200US $332,700
Median gross rent$1,042Franklin$1,042Kansas$1,060US $1,413
Bachelor's degree or higher24.6%Franklin24.6%Kansas35.6%US 35.7%
Mean commute23.4 minFranklin23.4 minKansas19.7 minUS 26.4 min
Population density46 / sq miFranklin46 / 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 Franklin County

Largest towns in Franklin County
TownZIP codesPopulation
Ottawa 1 12,678
Wellsville 1 2,216
Pomona 1 1,088
Richmond 1 503
Williamsburg 1 372
Princeton 1 236
Lane 1 223
Rantoul 1 130

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 Franklin County.

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

Every ZIP code in Franklin County, with figures

ZIP codes in Franklin County
ZIP City Type Population Median income Median home
66042 Lane , KS Standard 929 $67,813 $185,900
66067 Ottawa , KS Standard 16,330 $77,255 $182,800
66076 Pomona , KS Standard 2,416 $73,945 $187,900
66078 Princeton , KS Standard 805 $80,000 $205,900
66079 Rantoul , KS Standard 752 $54,432 $164,000
66080 Richmond , KS Standard 980 $90,543 $173,000
66092 Wellsville , KS Standard 4,351 $87,524 $241,700
66095 Williamsburg , KS Standard 583 $71,023 $179,700

Cite this page

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

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