Affton, MO 63123 - Home Prices, Rental Trends, Listings & Demographics | Prop:Metrics

Affton, MO—63123

Real Estate Data & Market Trends

Key Metrics at a Glance

Median Home Value

$250,000

0.7% YoY Growth

Household Income

$74,200

29.7% YoY Growth

Days on Market

16.0% Longer YoY

Home Price Forecast

0.7%

Median Rent

$1,400

8.1% YoY Growth

1-Bed Rent

$875

18.6% YoY Growth

2-Bed Rent

$1,400

4.5% YoY Growth

3-Bed Rent

$1,900

5.2% YoY Growth

Home Price Trends — Affton, MO

As of May '26, the median home price in Affton, MO is $250,000, with a year-over-year change of 0.7%. This indicates that home prices in Affton, MO are flat. According to Zillow, the 1-year price projection is 0.7%, suggesting a relatively flat housing market in the next year.

Cost per Home Type

Home Type	Median Home Value	YoY % Change
All Homes	$250,000	0.7%
Single Family	$254,000	1.2%
Condos	$147,000	0.0%

Cost per Home Size

Home Size	Median Home Value	YoY % Change
1 Bed

Rental Trends — Affton, MO

As of July '25, Rentcast reports the average rent in Affton, MO is $1,470, with a year-over-year rent change of -8.1%. Per bedroom, the median rent as of July '25 in Affton, MO is 1-bedrooms: $893, 2-bedrooms: $1,390, 3-bedrooms: $2,040, 4-bedrooms: $2,230. The most common rental property sizes in Affton, MO are 2-bedroom and 1-bedroom, accounting for 46.4% and 33.6% of the rental stock.

Type	Median Rent	Average Rent
Average Rent	$1,400	$1,470
Studio Rent	N/A	N/A
1 Bed Rent	$875	$893
2 Bed Rent	$1,400	$1,390
3 Bed Rent	$1,900	$2,040
4 Bed Rent	$2,050	$2,230

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% of Rental Stock

Studio

2.9%

1 Bedroom

33.6%

2 Bedrooms

46.4%

3 Bedrooms

16.0%

4 Bedrooms

1.1%

Property Listings — Affton, MO

As of May '26, Realtor.com reports that the median days on market for a home in Affton, MO is 36. This is a increase of 16.0% from last year, suggesting that homes are sitting on the market longer than last year. The percentage of listed homes with a reduced price is 15.0%, representing a small inventory and little supply pressure on home prices.

Metric	Zip Code Average	Year over Year % Change
Median Listing Price	$275,000	2.0%
Listing Count	135	7.0%
Listings as % of Homes	0.4%	7.0%
Days on Market	36	16.0%

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Demographics — Affton, MO

As of the latest ACS Survey released in 2023, Affton, MO has a population of 49,800, which has decreased by -2.6% over the past 5 years. Affton, MO is a moderately popular place for families, as children make up 18.8% of the population. The area has a moderately educated workforce, with 36.0% of adult residents holding a bachelor’s degree or higher. There are some residents working remotely, with 11.4% reporting working from home.

Metric	Latest Census	YoY % Change
Population	49,800	-2.6%
% Under 18	18.8%	6.8%
% Seniors	19.2%	1.6%
% WFH	11.4%	185.0%
% w/ College Degree	36.0%	9.4%

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As of the latest ACS Survey released in 2023, Affton, MO is a predominantly white area, with 81.9% of the population identifying as white. The white population has shrunk by 8.0% in the last 5 years. The second most common race or ethnicity in Affton, MO is asian, making up 4.9% of the population. Foreign-born residents account for 13.3% of the population in Affton, MO, and this percentage has increased by 22.0% as of the ACS Survey 5 years prior, suggesting more immigrants are calling the area home.

Race and Ethnicity

Metric	Latest Census	5-Year % Change
% White	81.9%	-8.0%
% Black	3.6%	44.0%
% Hispanic	4.7%	104.3%
% Asian	4.9%	36.1%
% Foreign Born	13.3%	22.0%

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Mortgage and Risk — Affton, MO

According to HUD data as of 2023, there were 1080 mortgage originations in Affton, MO, of which 85.0% of loans were conventional mortgages. The average loan-to-value was 70.0%, with 35.0% above 90% LTV (very high). This implies large mortgage risk in Affton, MO. Investor activity is low, as 3.0% of loans were by investors. 10.0% of loans were cash-out refinances, suggesting few homeowners are tapping equity.

Mortgages

Metric	Zip Code Average
Total Loan Originations	1,080
% Conventional Loans	85.0%
% Government Loans	15.0%
% Investor Loans	3.0%
% Second Loans	1.0%
% Cash Out Refinance	10.0%

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Rentals and Section 8 — Affton, MO

As of 2024, the percent of homes in Affton, MO under the Section 8 program is 2.2%. This is considered low, suggesting that the neighborhood is sparsely composed of Section 8 homes. Section 8 opportunity is good when HUD pays more than market rent. 1-bedroom units appear to be good home sizes to consider for Section 8 housing in Affton, MO, because HUD payments exceed market rent, while 2-bedroom and 3-bedroom and 4-bedroom units do not.

Section 8 Market Size

Total Units under HUD	201
Total Units Section 8	126
% Rentals under Section 8	2.2%
% Occupied Section 8	85.1%

Section 8 Opportunity

Home Size	HUD Premium	Market Rent	Max HUD Rent
1 Bedroom	$85	$875	$960
2 Bedroom	-$220	$1,400	$1,180
3 Bedroom	-$380	$1,900	$1,520
4 Bedroom	-$300	$2,050	$1,750

Affton, MO—63123

Key Metrics at a Glance

Home Price Trends — Affton, MO

Cost per Home Type

Cost per Home Size

% of Housing Stock

Rental Trends — Affton, MO

% of Rental Stock

Property Listings — Affton, MO

Demographics — Affton, MO

Race and Ethnicity

Mortgage and Risk — Affton, MO

Mortgages

Rentals and Section 8 — Affton, MO

Section 8 Market Size

Section 8 Opportunity

Affordability — Affton, MO

Home Price to Income Ratio

Affton, MO — ZIP Code Boundary Map

Nearby ZIP Codes

Webster Groves, MO

Lemay, MO

St. Louis Hills, Saint Louis, MO

Crestwood, MO

Maplewood, MO

Frequently Asked Questions

Metric	Zip Code Average
Home Price to Income Ratio	3
Median Home Price	$250,000
Median Household Income	$74,200

Affton, MO—63123

Key Metrics at a Glance

Home Price Trends — Affton, MO

Cost per Home Type

Cost per Home Size

% of Housing Stock

Rental Trends — Affton, MO

% of Rental Stock

Property Listings — Affton, MO

Demographics — Affton, MO

Race and Ethnicity

Mortgage and Risk — Affton, MO

Mortgages

Rentals and Section 8 — Affton, MO

Section 8 Market Size

Section 8 Opportunity

Affordability — Affton, MO

Home Price to Income Ratio

Affton, MO — ZIP Code Boundary Map

Nearby ZIP Codes

Webster Groves, MO

Lemay, MO

St. Louis Hills, Saint Louis, MO

Crestwood, MO

Maplewood, MO

Frequently Asked Questions

What is the average home price in Affton, MO 63123?

How have home prices in Affton, MO 63123 changed over the past year?

What is the home price projection for Affton, MO 63123?

What are the demographics of Affton, MO 63123?

How long does it take homes to sell in Affton, MO 63123?

What is the average rent price in Affton, MO 63123?