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/IL/COUNTY/FRANKLIN

Franklin County, IL ZIP codes

There are 17 ZIP codes in Franklin County, IL, in 17 towns, from 62812 to 62999. The largest are 62896 (West Frankfort), 62812 (Benton) and 62884 (Sesser).

The county seat is Benton, Illinois.

ZIP codes
17
Towns
17
County seat
Benton, Illinois
County FIPS
17055
Population
37,323
Median household income
$56,740
Land area
409 sq mi
Area codes
618, 730

Franklin County ZIP codes by town

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

6281262819628226282562836628406285662860628656287462884628906289162896628976298362999

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 37,323 people live in Franklin County, in 16,137 households, the 35th most populous of Illinois's 102 counties. The median household income is $56,740 a year, 32% below the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $89,000 (66% below the Illinois median), and median gross rent is $803 a month. The median age is 43.4; 15.8% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 27 minutes.

Population37,323Franklin37,323
Households16,137Franklin16,137
Median age43.4Franklin43.4Illinois39.0US 38.9
Median household income$56,740Franklin$56,740Illinois$83,390US $80,734
Median home value$89,000Franklin$89,000Illinois$263,300US $332,700
Median gross rent$803Franklin$803Illinois$1,274US $1,413
Bachelor's degree or higher15.8%Franklin15.8%Illinois37.8%US 35.7%
Mean commute26.9 minFranklin26.9 minIllinois27.8 minUS 26.4 min
Population density91 / sq miFranklin91 / 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
West Frankfort 1 7,118
Benton 1 6,863
Christopher 1 2,570
Sesser 1 2,023
Zeigler 1 1,267
Royalton 1 1,214
Whittington 1 542
Valier 1 523
Thompsonville 1 500
Orient 1 417
Ewing 1 341
Logan 1 332
Buckner 1 276
Coello 1 254
Mulkeytown 1 117

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
62812 Benton , IL Standard 11,611 $60,539 $101,100
62819 Buckner , IL Standard 247 $45,341 $62,900
62822 Christopher , IL Standard 2,581 $47,770 $67,600
62825 Coello , IL Standard 254 $48,750 $68,600
62836 Ewing , IL Standard 891 $73,281 $123,900
62840 Frankfort Heights , IL No street area — — —
62856 Logan , IL Standard 332 $60,750 $54,500
62860 Macedonia , IL Standard 384 $80,288 $120,100
62865 Mulkeytown , IL Standard 2,037 $67,798 $153,200
62874 Orient , IL Standard 440 $40,625 $54,000
62884 Sesser , IL Standard 2,758 $58,679 $97,200
62890 Thompsonville , IL Standard 2,377 $54,271 $108,100
62891 Valier , IL Standard 514 $27,344 $78,500
62896 West Frankfort , IL Standard 10,627 $55,458 $88,900
62897 Whittington , IL Standard 542 $78,125 $89,300
62983 Royalton , IL Standard 1,728 $57,667 $77,700
62999 Zeigler , IL Standard 1,267 $41,553 $57,300

Cite this page

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

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