43140 ZIP Code — London, OH

Madison County, Ohio

ZIP code 43140 is located in London, Ohio, within Madison County. It covers approximately 219.92 square miles and serves a population of 23,812 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 740.

About ZIP code 43140

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $199,200. Owner-occupancy sits near the national average at 74%.

Median household income is $71,642. 32% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with manufacturing as the leading industry. The average commute of 24 minutes is near the national average.

College attainment at 18% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (25%) compared to national benchmarks.

Overall, ZIP code 43140 reflects a community defined by a trades-oriented workforce and a significant Social Security-dependent population.

23,812

population

219.92

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

43140 ZIP code map

Cities in ZIP code 43140

Below are the cities the US Postal Service accepts for ZIP code 43140. Using any city not on this list may result in mail delivery delays.

City	Status
London	Acceptable
London	Preferred

Nearby ZIP codes

43162 West Jefferson (5.8 mi) 43119 Galloway (10.4 mi) 45369 South Vienna (12.2 mi) 43143 Mount Sterling (12.4 mi) 43153 South Solon (12.6 mi) 43123 Grove City (13.8 mi) 43228 Columbus (14.2 mi) 43044 Mechanicsburg (14.6 mi) 43146 Orient (14.6 mi) 45368 South Charleston (14.6 mi) 43026 Hilliard (14.8 mi) 43029 Irwin (15.6 mi)

Demographics updated 06/2026

Population
Total population	23,812
Population density	108 / sq mi
State FIPS	39
County FIPS	097

Geography
Land area	219.92 sq mi
Water area	0.72 sq mi
Latitude	39.8872
Longitude	-83.3870
Timezone	Eastern (ET)
Area code	740

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	35.6%	30.9%	43.3%
$50k – $100k	36.9%	34.4%	31.4%
$100k – $200k	24.1%	27.9%	20.0%
Over $200k	3.4%	6.7%	5.2%

Demographics & statistics

23,812

Population

108

People per sq mi

41.8

Median age

$71,642

Median household income

$30,102

Per capita income

$199,200

Median home value

$850

Median monthly rent

74.4%

Home ownership

12.0%

Poverty rate

3.8%

Unemployment

6,384

Housing units

18.1%

Bachelor's or higher

Age distribution

Male Female

572

Under 5

380

681

5–9

452

763

10–14

508

660

15–19

439

875

20–24

581

1,900

25–34

1,264

2,344

35–44

1,559

2,484

45–54

1,652

954

55–59

635

985

60–64

655

1,186

65–74

788

667

75–84

444

231

85+

153

← Male

Female →

Age summary

Group	Count	%
Under 18	4,080	17.1%
18 and over	19,732	82.9%
65 and over	3,469	14.6%
Median age	41.8 years

Race & ethnicity

White 82.4%

Black or African American 9%

Two or more races 5%

Hispanic or Latino 1.5%

Asian 1.3%

Other race 0.4%

American Indian / Alaska Native 0.3%

Group	Count	%
White	19,909	82.4%
Black or African American	2,167	9%
Two or more races	1,220	5%
Hispanic or Latino	352	1.5%
Asian	323	1.3%
Other race	108	0.4%
American Indian / Alaska Native	77	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	35.6%	30.9%	43.3%
$50k – $100k	36.9%	34.4%	31.4%
$100k – $200k	24.1%	27.9%	20.0%
Over $200k	3.4%	6.7%	5.2%

Under $10k 3.5%

$10k–$15k 3.7%

$15k–$25k 4.6%

$25k–$35k 6.0%

$35k–$50k 16.3%

$50k–$75k 17.8%

$75k–$100k 15.6%

$100k–$150k 16.9%

$150k–$200k 10.9%

$200k+ 4.7%

Range	% of households
Under $10k	3.5%
$10k–$15k	3.7%
$15k–$25k	4.6%
$25k–$35k	6.0%
$35k–$50k	16.3%
$50k–$75k	17.8%
$75k–$100k	15.6%
$100k–$150k	16.9%
$150k–$200k	10.9%
$200k+	4.7%
Median income	$71,642

Housing

Home values

Under $50k 4.5%

$50k–$100k 7.3%

$100k–$150k 16.4%

$150k–$200k 22.3%

$200k–$300k 27.0%

$300k–$500k 16.0%

$500k–$1M 6.2%

$1M+ 0.5%

Housing overview

Metric	Value
Median home value	$199,200
Median rent / month	$850
Owner occupied	74.4%
Renter occupied	25.6%
Vacant	6.9%
Single-family detached	78.6%
Large apartment buildings	3.4%
Mobile homes	3.3%
Median rooms	5.9
Avg household size (owned)	2.55

Year built

Era	%
2020 or later	0.0%
2010–2019	4.7%
2000–2009	10.4%
1990–1999	16.2%
1980–1989	11.4%
1970–1979	15.9%
1960–1969	9.5%
1950–1959	8.5%
1940–1949	4.6%
1939 or earlier	18.7%

Bedrooms

Size	% of units
No bedroom (studio)	2.0%
1 bedroom	5.2%
2 bedrooms	25.0%
3 bedrooms	47.3%
4 bedrooms	17.8%
5+ bedrooms	2.5%

Vehicles per household

Vehicles	% of households
No vehicle	3.6%
1 vehicle	35.7%
2 vehicles	33.6%
3 or more	27.1%

Heating fuel

Fuel type	%
Utility gas	47.4%
Electricity	33.3%
Propane / LP gas	11.9%
Fuel oil	4.6%
Wood	2.0%
No fuel used	0.2%

Households & families

Household type	Count	%
Married-couple family	3,812	48.9%
Cohabiting couple	748	9.6%
Male householder, no spouse	1,347	17.3%
Female householder, no spouse	1,892	24.3%
Households with children under 18	2,215	28.4%
Households with seniors (65+)	2,440	31.3%
Average household size	2.47

Marital status

Status	Male	Female
Never married	45.5%	21.5%
Married	35.7%	47.3%
Separated	1.8%	3.2%
Widowed	2.6%	11.9%
Divorced	14.4%	16.2%

Education

Less than 9th grade 2.1%

Some HS, no diploma 11.6%

HS graduate 39.5%

Some college, no degree 21.1%

Associate's degree 7.7%

Bachelor's degree 13.4%

Graduate / professional 4.7%

Metric	%
HS diploma or higher	86.3%
Bachelor's or higher	18.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	158	3.2%
Kindergarten	163	3.3%
Elementary school	2,013	41.3%
High school	1,334	27.4%
College / grad school	1,208	24.8%

Employment

Industry of employment

Manufacturing 17.3%

Education & healthcare 15.9%

Retail trade 11.9%

Arts, food & hospitality 9.0%

Professional & management 8.9%

Transportation & utilities 8.1%

Construction 6.8%

Public administration 6.0%

Finance & real estate 5.7%

Other services 3.8%

Agriculture & mining 2.4%

Wholesale trade 2.2%

Information 1.9%

Occupation

Category	%
Management, business & arts	34.4%
Service	15.8%
Sales & office	16.8%
Natural resources & construction	11.7%
Production & transportation	21.3%

Employment type

Type	%
Private sector	77.8%
Government	13.4%
Self-employed	8.2%
Unpaid family workers	0.6%

Commute

Method	%
Drive alone	81.5%
Carpool	7.4%
Public transit	0.2%
Walk	1.2%
Work from home	9.1%
Other means	0.7%
Avg commute (minutes)	23.7

Poverty

All people 12.0%

Under 18 years 17.6%

18 and over 10.5%

Married-couple families 1.5%

Female-led households 34.6%

Income support

Source	% of households
Social Security	32.0%
Retirement income	28.0%
Supplemental Security	7.0%
Cash public assistance	3.9%
Food stamps / SNAP	13.5%

Health indicators

Condition	%
Obesity	41.2%
High blood pressure	33.3%
High cholesterol	30.5%
Diabetes	10.5%
Heart disease	6.3%
Stroke	3.0%
Asthma	9.8%
Arthritis	25.9%
Kidney disease	2.6%
Pulmonary disease	8.2%
Cancer	5.8%

Behavior / access	%
Smoking	24.8%
Binge drinking	18.8%
No physical activity	27.1%
Less than 7 hrs sleep	38.1%
Depression	22.2%
Fair or poor health	15.3%
Poor mental health	16.5%
Poor physical health	10.5%
No health insurance	14.6%
Visited doctor (checkup)	73.7%
Visited dentist	57.3%
Cholesterol screening	86.6%
Teeth loss	15.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,632	8.3%

Disability	%
Any disability	17.1%
Under 18	6.2%
18–64 years	14.2%
65 and over	41.1%

Health insurance coverage

Type	%
Private insurance	68.3%
Public insurance	38.8%
No insurance	6.9%
Uninsured under 19	5.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	22,860	96.0%
Spanish	464	2.0%
Other Indo-European	175	0.8%
Asian & Pacific Islander	119	0.5%
Other languages	126	0.6%

Place of birth & citizenship

Origin	Count	%
Native born (US)	23,287	97.8%
Born in same state	23,195	97.4%
Born in different state	19,571	82.2%
Foreign born	92	0.4%
Naturalized citizen	525	2.2%
Not a US citizen	239	45.5%

Ancestry

Ancestry	Count	%
Italian	3,467	14.6%
French	3,372	14.2%
Arab	3,245	13.6%
English	438	1.8%
Irish	97	0.4%

Ancestry	Count	%
German	54	0.2%
Dutch	18	0.1%
Polish	6	0%
Norwegian	5	0%

Technology access

Metric	% of households
Computer access	32.8%
Internet access	93.4%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 43140

What city is ZIP code 43140 in?

ZIP code 43140 is primarily assigned to London, Ohio.

What county is ZIP code 43140 in?

ZIP code 43140 falls within Madison County, Ohio.

What is the population of ZIP code 43140?

ZIP code 43140 has an estimated population of 23,812 residents, with a density of 108 people per square mile.

What is the typical home value in ZIP code 43140?

The median home value in ZIP code 43140 is $199,200.

What is the median household income in ZIP code 43140?

The median household income in ZIP code 43140 is $71,642, below the national median of ~$75,000.

What timezone is ZIP code 43140 in?

ZIP code 43140 observes the EST timezone.