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/OH/COUNTY/MADISON

Madison County, OH ZIP codes

There are 7 ZIP codes in Madison County, OH, in 7 towns, from 43029 to 43162. The largest are 43140 (London), 43064 (Plain City) and 43162 (West Jefferson).

The county seat is London.

ZIP codes
7
Towns
7
County seat
London
County FIPS
39097
State
Ohio
Population
44,423
Median household income
$87,045
Land area
467 sq mi
Area codes
380, 614
Metro area
Columbus

Madison County ZIP codes by town

London (county seat)
43140

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 Madison County ZIP codes

43029430644314043143431514315343162

The ZIP codes of Madison 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.

Madison County in numbers

About 44,423 people live in Madison County, in 15,686 households, the 53rd most populous of Ohio's 88 counties. The median household income is $87,045 a year, 22% above the Ohio median of $71,389 (US: $80,734). The median owner-occupied home is valued at $250,100 (16% above the Ohio median), and median gross rent is $943 a month. The median age is 41.5; 24.2% of adults 25 and over hold a bachelor's degree or higher (31.5% across Ohio); the average commute takes 25 minutes.

Population44,423Madison44,423
Households15,686Madison15,686
Median age41.5Madison41.5Ohio39.7US 38.9
Median household income$87,045Madison$87,045Ohio$71,389US $80,734
Median home value$250,100Madison$250,100Ohio$214,800US $332,700
Median gross rent$943Madison$943Ohio$1,034US $1,413
Bachelor's degree or higher24.2%Madison24.2%Ohio31.5%US 35.7%
Mean commute24.9 minMadison24.9 minOhio23.4 minUS 26.4 min
Population density95 / sq miMadison95 / 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 Madison County

Largest towns in Madison County
TownZIP codesPopulation
London 1 10,484
West Jefferson 1 4,392
Plain City 1 3,829
Mount Sterling 1 1,737
Irwin 1 544
South Solon 1 344
Sedalia 1 233

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 Madison County.

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

Every ZIP code in Madison County, with figures

ZIP codes in Madison County
ZIP City Type Population Median income Median home
43029 Irwin , OH Standard 544 $107,744 —
43064 Plain City , OH Standard 18,143 $139,591 $461,900
43140 London , OH Standard 24,237 $83,644 $242,900
43143 Mount Sterling , OH Standard 5,803 $100,333 $242,800
43151 Sedalia , OH Standard 233 $62,292 $136,500
43153 South Solon , OH Standard 1,112 $90,417 $184,000
43162 West Jefferson , OH Standard 6,896 $76,250 $213,800

Cite this page

zipcodes.pro. “Madison County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/oh/county/madison

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