Zip Code 43140
London, Ohio — Madison County
📍 ZIP code 43140 is in London, Madison County, Ohio.
ZIP code 43140 is located in London, Madison County, Ohio. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 24,162. The area code for ZIP code 43140 is 419.
Quick Answer
Zip code 43140 is in London, Ohio (Madison County). It has a population of 24,162, median household income of $82,598, and median home value of $228,000.
Population
24,162
Income
$82,598
Home Value
$228,000
Climate
82°F / 19°F
About Zip Code 43140
Zip code 43140 is located in London, Ohio, within Madison County. Home to approximately 24,162 residents, this area sits at an elevation of 1041 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 419.
The median household income is $82,598 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $228,000, and the cost of living index is 81 (19% below the national average of 100).
Summers average a high of 82°F while winters drop to 19°F. The area receives about 42 in of rain and 7 in of snow annually. The zip code covers 222.1 square miles of land area and 0.7 square miles of water.
Key Statistics
24,162
$82,598
$228,000
Eastern (EST/EDT)
419
1041 ft
222.1 sq mi
41.7
8,419
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Compare With Nearby Zip Codes
| Metric | 43140 | 43162 | 45369 | 43151 | 43153 | 45368 |
|---|---|---|---|---|---|---|
| City | London, OH | West Jefferson, OH | South Vienna, OH | Sedalia, OH | Jeffersonville, OH | South Charleston, OH |
| Population | 24,162 | 6,647 | 4,232 | 223 | 1,193 | 3,860 |
| Median Income | $82,598 | $72,610 | $96,500 | $66,875 | $72,500 | $60,411 |
| Home Value | $228,000 | $196,200 | $205,300 | $123,200 | $184,700 | $156,100 |
| Cost of Living | 81 | 76 | 84 | 60 | 81 | 60 |
| Median Age | 41.7 | 44 | 48.5 | 34.9 | 49.1 | 45.7 |
Cost of Living
100 = National Average. London's cost of living is 19% below the national average.
vs. State Avg
Below
Affordability
Affordable
Income-to-Home
2.8x
Demographics
Zip code 43140 has a population of 24,162 people with a median age of 41.7. There are 8,419 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
London (43140) population trend from 2010 to 2024
↑ 65.6%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
82°F
19°F
42 in
7 in
London experiences warm summers with average highs around 82°F. Winters are cold with lows averaging 19°F. The area receives about 7 in of snow per year.
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Housing & Economy
Median Home Value
$228,000
Median Household Income
$82,598
With 8,419 housing units across 222.1 square miles, 43140 has a housing density of 38 units per square mile. The home price-to-income ratio is 2.8x.
Location & Geography
Latitude
39.8801°
Longitude
-83.4285°
Land Area
222.1 sq mi
Water Area
0.7 sq mi
Nearby Zip Codes
Zip codes closest to 43140 (London, OH) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 43140's $82,598. A way to compare London to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 43140 (London, OH). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is London, Ohio?
London, Ohio uses zip code 43140.
What county is zip code 43140 in?
Zip code 43140 is located in Madison County, Ohio.
What is the population of zip code 43140?
The population of zip code 43140 is 24,162 with a median age of 41.7.
Is 43140 in London, Ohio?
Yes, zip code 43140 is in London, Madison County, Ohio. The area code is 419.
Frequently Asked Questions
What city is zip code 43140 in?
Zip code 43140 is in London, Ohio. It is part of Madison County and uses the Eastern (EST/EDT) timezone.
What is zip code 43140?
Zip code 43140 is a U.S. postal code in London, Ohio (Madison County). It has a population of 24,162 and covers 222.1 square miles.
What is the population of zip code 43140?
The population of zip code 43140 (London, OH) is 24,162 with a median age of 41.7. There are approximately 8,419 housing units in this area.
What is the median income in zip code 43140?
The median household income in zip code 43140 (London, OH) is $82,598 per year. The cost of living index is 81 (100 = national average).
What is the average home price in zip code 43140?
The median home value in zip code 43140 (London, OH) is $228,000. The cost of living index is 81 compared to the national average of 100.
What county is zip code 43140 in?
Zip code 43140 is located in Madison County, Ohio. The primary city is London.
What is the area code for zip code 43140?
Zip code 43140 in London, OH uses area code 419. It is located in the Eastern (EST/EDT) timezone.
Is zip code 43140 a good place to live?
Zip code 43140 (London, OH) has a cost of living index of 81 (100 = national average), a median household income of $82,598, and median home values of $228,000. The median age is 41.7. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 43140?
The cost of living index for zip code 43140 (London, OH) is 81, where 100 represents the national average. This area is below the national average. Median home value: $228,000.
What schools serve zip code 43140?
Zip code 43140 in London, Ohio is served by the local school district of Madison County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.