Affton, MO — City Data & Statistics

Median Income $77,337

3% higher than US avg

Home Value $200,300

29% lower than US avg

Bachelor's+ 35.0%

4% higher than US avg

Median Rent $978

16% lower than US avg

Obesity Rate 29.4%

8% lower than US avg

Unemployment 1.8%

50% lower than US avg

Poverty Rate 3.3%

73% lower than US avg

How Affton Compares to the U.S. Average (100% = U.S. avg)

People

Population20,035

Median Age41.7 yrs

Density4,384/mi²

Male / Female49% / 51%

Largest GroupWhite 82%

Veterans7.0%

Economy

A+

Median Income$77,337

Per Capita$43,832

Unemployment1.8%

Poverty3.3%

Commute23 min

Housing

A+

Home Value$200,300

Rent$978

OwnershipN/A

Zillow$235,292

Housing Units9,300

Rent Burden25.4%

Health

Obesity29.4%

Uninsured7.3%

Smoking14.5%

Depression25.9%

Heart Disease4.8%

Climate

Avg Temp58°F (15°C)

AQI41 (Good)

Rain45.6 in/yr

Sunny Days293/yr

Elevation620 ft (189 m)

Education

B+

Bachelor's+35.0%

High School+92.6%

Graduate+13.8%

School Score5.51

Community

2024 VoteR 77% / D 22%

Commute23 min

Broadband91.0%

Is Affton a Good Place to Live?

Based on current data, Affton receives an overall livability score of 4.4 out of 5.0, earning a grade of A. Key strengths include low unemployment, affordable housing, abundant sunshine, a low poverty rate. Affton stands out as an excellent place to live, with strong marks across most quality-of-life indicators.

Economy & Jobs

The median household income in Affton is $77,337, roughly in line with the national average of $75,149. The job market is very strong with unemployment at just 1.8%. Only 3.3% of residents live below the poverty line, well below the national rate of 12.4%. Workers commute an average of 23 minutes.

Cost of Living & Housing

The median home value in Affton is $200,300, 29% below the national median — offering relatively affordable homeownership. Renters pay a median of $978 per month, below the national average — a plus for affordability. At just 2.6x median income, home prices are very affordable relative to local earnings.

Education

Educational attainment is solid, with 35.0% holding a bachelor's degree or higher, near the national average. 92.6% have completed high school. Area schools have an average test score of 5.5/10.

Climate & Weather

Affton enjoys a moderate climate with an average annual temperature of 58°F. Winters average 38°F in January while summers reach 78°F in July. With 293 sunny days per year, residents enjoy well above the national average of sunshine. Annual precipitation totals 45.6 inches, including 7.6 inches of snow. Air quality is rated Good with a median AQI of 41.

Affton has a population of 20,035 with a density of 4,384 people per square mile, spread across 4.6 square miles. The median age is 41.7 years, 7% older than the national median of 38.9. The gender split is 50.6% female and 49.4% male. The city is predominantly White (82.2%), with 1.3% Hispanic, 3.1% Black. English is the primary language spoken at home by 84.8% of residents, while 15.2% speak Spanish. 7.0% of the population are veterans. 12.9% of residents have a disability. 94.6% have health insurance coverage.

Population

20,035

Total Population

4,384

People / sq mi

41.7yrs

Median Age

7% above US avg

4.6mi²

Land Area

Gender Distribution

Male 49.4%

Female 50.6%

Race & Ethnicity

Affton vs U.S. Average

Language Spoken at Home

English Only	84.8%
	8% above US avg
Spanish	15.2%
	13% above US avg

Social Characteristics

Affton vs U.S. Average

The median household income in Affton is $77,337, which is 3% above the national average of $75,149. Per capita income is $43,832 (above the $39,052 national figure). The unemployment rate is 1.8% (below the 3.6% US average). 3.3% of residents live below the poverty line, lower than the national rate of 12.4%. The cost of living index is 90.8, below the national baseline of 100 — offering relatively affordable living. Workers commute an average of 23 minutes (shorter than the 28-minute US average). 9.4% of workers work from home (below the 15.2% national rate).

Income: Affton vs U.S.

Commute Mode

Income

Median HH Income	$77,337
	3% above US avg
Per Capita Income	$43,832

Employment & Poverty

Unemployment	1.8%
	50% below US avg
Poverty Rate	3.3%
	73% below US avg

Business (County)

Tax & Cost of Living


Cost of Living	90.80 (100=avg)

Commute & Transportation

Commute Time	23.0 min
Drive Alone	76.2%
Public Transit	0.7%
Work from Home	9.4%

Walkability

The median home value in Affton is $200,300, 29% below the national median of $281,900. Zillow estimates the typical home value at $235,292, higher than the Census estimate. Homes sell for 101.2% of their list price, indicating a competitive market where bidding wars are common. Monthly rent averages $978 (16% below the national average of $1,163). Fair market rent ranges from $775 for a one-bedroom to $970 for a two-bedroom apartment. There are 9,300 total housing units in the city. The median year a home was built is 1959. 25.4% of renters spend 30% or more of their income on housing. The home price-to-income ratio is 2.6x, well within the affordable range.

Home Value Sources

Ownership Split

Home Values

Census Median	$200,300
	29% below US avg
Zillow ZHVI	$235,292
Median List Price	$254,950

Real Estate Market (Redfin)

Median List Price	$254,950
$/Sq Ft	$191
Homes Sold	17
Sale-to-List Ratio	101.2%
Price Drops	8.3%
Inventory	12

Rental Costs

Census Median Rent	$978
	16% below US avg
Rent Burden	25.4%

HUD Fair Market Rent

Studio	$732
1 Bedroom	$775
2 Bedrooms	$970
3 Bedrooms	$1,265
4 Bedrooms	$1,457

Ownership & Property

Owner-Occupied	80.5%
Housing Units	9,300
Median Year Built	1959

Property Tax

In Affton, 29.4% of adults are obese, below the national rate of 32.1%. 8.4% have diabetes (below the 10.5% national rate). Heart disease affects 4.8% of residents, below the national average. 29.9% have high blood pressure. 14.5% are current smokers. 19.9% report binge drinking. 23.1% are physically inactive. 25.9% report depression (above the 20.0% national average). 17.8% experience frequent mental distress. 7.3% of residents lack health insurance.

Health Metrics: Affton vs U.S. Average (%)

Chronic Conditions

Obesity	29.4%
	8% below US avg
Diabetes	8.4%
Heart Disease	4.8%
High Blood Pressure	29.9%
Asthma	10.6%
COPD	5.8%
Cancer	7.4%
Stroke	2.6%

Behaviors & Mental Health

Smoking	14.5%
	4% above US avg
Binge Drinking	19.9%
Physical Inactivity	23.1%
Depression	25.9%
Mental Distress	17.8%
Physical Distress	12.1%
Short Sleep	32.3%

Healthcare Access

Insurance Rate	94.6%
Uninsured	7.3%
	15% below US avg
Checkup Rate	75.2%
Dental Visits	65.4%

Food & Exercise

Affton enjoys a temperate climate with an average annual temperature of 58°F (15°C). Winters average 38°F in January while summers reach 78°F in July. The area gets 293 sunny days per year, well above the U.S. average of 205 — making it one of the sunnier locations in the country. Annual precipitation totals 45.6 inches. The area receives 7.6 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 620 feet.

Temperature

38°F Jan (3°C) 78°F Jul (26°C)

Annual Average	58.2°F
	8% above US avg
January Average	38°F (3°C)
July Average	78°F (26°C)
Sunny Days	293 days/yr

Precipitation & Snow

Annual Rainfall	45.6 inches
	20% above US avg
Snowfall	7.6 inches/yr

Air Quality

AQI Median	41.0
Rating	Good

Geography

Elevation	620 ft (189 m)
Area	4.6 sq mi (11.8 km²)
Population Density	4,384/sq mi
Coordinates	38.5506°N, 90.3332°W
Timezone	America/Chicago

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	38°F (3°C)	2.0 in	Driest
February	35°F (2°C)	2.2 in
March	45°F (7°C)	3.5 in
April	56°F (13°C)	3.7 in
May	66°F (19°C)	4.1 in	Wettest
June	75°F (24°C)	3.6 in
July	78°F (26°C)	3.7 in	Warmest
August	77°F (25°C)	3.2 in
September	70°F (21°C)	3.3 in
October	58°F (15°C)	2.8 in
November	46°F (8°C)	3.5 in
December	34°F (1°C)	3.0 in	Coldest

Affton has a seasonal temperature swing of 44°F — from 34°F in December to 78°F in July. Total annual precipitation is 38.6 inches, with May being the wettest month (4.1") and January the driest (2.0").

35.0% of adults hold a bachelor's degree or higher, 4% above the national average of 33.7%. 92.6% have completed high school. 13.8% hold a graduate or professional degree. Area schools have an average test score of 5.5 out of 10. In the 2024 presidential election, the county voted Republican with 76.6% of the vote, a 54.2-point margin. 91.0% of households have broadband internet access. 76.2% of workers drive alone to work.

2024 Presidential Election (County)

R 76.6%

D 22.4%

Winner: Republican by 54.2 points

Education

Bachelor's Degree+	35.0%
	4% above US avg
High School+	92.6%
Graduate Degree+	13.8%
School Test Score	5.51

B+ Education Grade (3.8/5.0)

Urban-Rural Classification

Population Density	4,384/sq mi
Total Area	4.6 sq mi

Infrastructure & Services

Broadband Access	91.0%

Safety & Disasters

Commute & Transportation

Avg Commute	23.0 min
Drive Alone	76.2%
Public Transit	0.7%
Work from Home	9.4%

Frequently Asked Questions About Affton

What is the population of Affton?

Affton has a population of 20,035 residents and is located in Missouri. The population density is 4,384 people per square mile, spread across 4.6 square miles. The median age of residents is 41.7 years, which is older than the national median of 38.9 years. The population is 50.6% female and 49.4% male.

Is Affton expensive to live in?

Affton is more affordable than the national average, with a cost of living index of 90.8 — below the baseline of 100. The median household income is $77,337, 3% above the national average of $75,149. The median home value is $200,300 (29% below the U.S. median). Renters pay a median of $978 per month, below the national average of $1,163. The home price-to-income ratio is 2.6x, indicating housing is reasonably affordable relative to local income levels.

What is the weather like in Affton?

Affton enjoys a temperate climate with an average annual temperature of 58°F (15°C). Winter temperatures average 38°F in January, while summers reach an average of 78°F in July. The area receives 293 sunny days per year, well above the national average of 205. Annual rainfall totals 45.6 inches, with 7.6 inches of snow. Air quality is rated Good with a median Air Quality Index (AQI) of 41.

How is the job market in Affton?

The job market in Affton is very strong, with unemployment at just 1.8% — well below the national rate of 3.6%. The average commute time is 23 minutes, and 9.4% of workers work from home.

How much does housing cost in Affton?

The median home value in Affton is $200,300. Zillow estimates the typical home value at $235,292. For renters, the median monthly rent is $978. Fair market rent is $775 for a 1-bedroom and $970 for a 2-bedroom apartment.

How are the schools in Affton?

Schools in Affton score 5.5 out of 10 on standardized testing, near the national average. 35.0% of adults in Affton hold a bachelor's degree or higher, above the national average of 33.7%. 92.6% have completed high school. 13.8% hold a graduate or professional degree.

How healthy is Affton?

The obesity rate in Affton is 29.4% (below the national rate of 32.1%). 14.5% of adults are smokers. 23.1% are physically inactive. 25.9% of residents report depression. 7.3% lack health insurance.

What is transportation like in Affton?

The average commute in Affton is 23 minutes, shorter than the national average of 28 minutes. 76.2% of workers drive alone to work, and 9.4% work from home.

What are the demographics of Affton?

The racial and ethnic makeup of Affton is 82.2% White, 3.1% Black or African American, 1.3% Hispanic or Latino. 84.8% of residents speak only English at home, while 15.2% speak Spanish. 7.0% of the population are military veterans. 12.9% of residents have a disability. 94.6% have health insurance coverage.

Nearby Cities

Lakeshire, MO 1,478 pop · 0.8 mi Marlborough, MO 2,366 pop · 1.4 mi St. George, MO 1,568 pop · 1.4 mi Green Park, MO 2,688 pop · 1.9 mi Crestwood, MO 12,298 pop · 2.7 mi Sappington, MO 6,882 pop · 2.7 mi Shrewsbury, MO 6,328 pop · 2.8 mi Mehlville, MO 29,089 pop · 3.0 mi Lemay, MO 16,431 pop · 3.1 mi Webster Groves, MO 23,771 pop · 3.2 mi Oakland, MO 1,619 pop · 3.4 mi Sunset Hills, MO 9,113 pop · 4.1 mi Maplewood, MO 8,154 pop · 4.3 mi Kirkwood, MO 29,302 pop · 4.6 mi

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