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 — CITY/KS/HARTFORD

Hartford ZIP code, Kansas

The ZIP code for Hartford, KS is 66854, and its area code is 620.

USPS city name
1 ZIP code
Population
428
Area code
620
State
Kansas

Hartford in numbers

About 428 people live in Hartford, in 149 households. The median household income is $55,250 a year, 26% below the Kansas median of $74,275 (US: $80,734). The median owner-occupied home is valued at $69,500 (68% below the Kansas median), and median gross rent is $700 a month. The median age is 33.4; 13.9% of adults 25 and over hold a bachelor's degree or higher (35.6% across Kansas); the average commute takes 23 minutes.

Population428Hartford428
Households149Hartford149
Median age33.4Hartford33.4Kansas37.4US 38.9
Median household income$55,250Hartford$55,250Kansas$74,275US $80,734
Median home value$69,500Hartford$69,500Kansas$217,200US $332,700
Median gross rent$700Hartford$700Kansas$1,060US $1,413
Bachelor's degree or higher13.9%Hartford13.9%Kansas35.6%US 35.7%
Mean commute22.5 minHartford22.5 minKansas19.7 minUS 26.4 min
Population density1,081 / sq miHartford1,081 / sq mi

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

ZIP codes addressed as Hartford

ZIP codes with the USPS city name Hartford
ZIP City Type Population Median income Median home
66854 Hartford , KS Standard 1,007 $96,250 $78,000

Map of Hartford ZIP codes

66854

The ZIP codes of Hartford, KS, 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.

Towns near Hartford

The nearest larger towns are Lebo (760 people, 9.0 mi), Olpe (565 people, 12 mi) and Burlington (2,605 people, 14 mi).

Towns near Hartford
TownPopulationDistance
Burlington 2,605 13.9 mi
Emporia 24,131 14.3 mi
Osage City 2,828 23.7 mi

More nearby: every ZIP code in Lyon County · Kansas ZIP codes

Cite this page

zipcodes.pro. “Hartford, KS ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ks/hartford

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