RentDataNowRentDataNow
ZIP Code · MO

ZIP 63123

Part of Affton, MO
Pop. 49,077·Saint Louis County·62nd most expensive ZIP in Missouri
Median rent (all units)
$1,476/mo
Year-over-Year
-8.9%
Month-over-Month
+4.8%
vs US Median
-$489
Rising (Monthly)
Be the first to discuss 63123 rents ↓
Most AffordableMost Expensive
ZIP 63123 · $1,476
More affordable than 75% of US ZIP codes · National median $1,965/mo
Rent check

Is your rent fair?

Compare your rent to the local median.

Medians by bedroom

Rent by unit size

Studio
$960
1 BR
$1,000
2 BR
$1,230
3 BR
$1,580
4 BR+
$1,830
Research median
$1,230/mo

Bedroom estimates are gross rents that include essential utilities (electricity, water, gas, sewer, trash).

Rent trends

12-month history

Loading…

Last updated: July 20, 2026

Annual cost
$17,712/yr
At $1,476/mo median
Location
CityAffton
StateMO
CountySaint Louis County
Rent Market Meter
Balanced Market
Renter's MarketBalancedLandlord's Market
Rents are roughly steady, with neither renters nor landlords holding a strong edge right now.
Based on rent-price momentum (-8.9% YoY, +4.8% MoM), not inventory.
Demographics

Who lives here

ZIP 63123 (Affton, MO) is majority owner-occupied, 37.6% of residents hold a bachelor's degree or higher.

Population
49,077
Median income
$77,055
Median age
40.9
Renters
25.1%
Age distribution
18.3%
21.6%
26.4%
14.3%
19.4%
Under 1818.3%
18–3421.6%
35–5426.4%
55–6414.3%
65+19.4%
Gender
48.4%
51.6%
Male48.4%
Female51.6%
Race & ethnicity
82.5%
White82.5%
Black4%
Hispanic4.1%
Asian4.8%
Other4.6%
Education (25+)
24.9%
30%
37.6%
No HS diploma7.5%
HS diploma24.9%
Some college30%
Bachelor's+37.6%
Housing tenure
74.9%
25.1%
Owner74.9%
Renter25.1%

Source: U.S. Census Bureau · ACS 2024 5-Year Estimates

2021 vs 2026

How ZIP 63123 in Affton, MO has changed in 5 years

Income
$65,693 → $77,055
up 17.3%
Population
49,886 → 49,077
down 1.6%
Renter share
28.6% → 25.1%
-3.5 pts
Bachelor's+
34.6% → 37.6%
+3.0 pts

Local incomes tracked alongside that move, going from a median of $65,693 in 2021 to $77,055 more recently. The population has contracted by 1.6% since 2021, moving from about 49,886 residents to roughly 49,077. Renters now make up 25.1% of households, compared with 28.6% five years ago. College-educated residents now make up 37.6% of adults here, versus 34.6% in 2021.

Community

Discussions about ZIP 63123

No discussions yet. Start the conversation.

Local insights

Tips for renters in ZIP 63123

About renting in ZIP 63123

Last updated: July 20, 2026

ZIP code 63123 covers Affton, MO. The median rent here is $1,476/mo as of July 2026. A 1-bedroom rents for a median of $1,000/mo. A 2-bedroom rents for a median of $1,230/mo.

At 23% of local median household income ($77,055/yr), ZIP 63123 ranks as affordable compared to the national benchmark of 30%. Rents have decreased 8.9% over the past year.

FAQ

Frequently asked questions

How much is rent in ZIP code 63123?

As of July 20, 2026, the median monthly rent in ZIP 63123 (Affton, MO) is $1,476. This is based on aggregated data from public sources and community submissions.

How does ZIP 63123 rent compare to the US average?

ZIP 63123's median rent of $1,476/mo is $489 (25%) below the US national median of $1,965/mo.

How does ZIP 63123 compare to other ZIPs in Missouri?

ZIP 63123 falls in the middle range for Missouri, ranking #62 out of 136 ZIPs at $1,476/mo.

How much income do you need to rent in ZIP 63123?

To keep rent at or below 30% of gross income, you would need to earn at least $59,000/year (~$28/hour full-time) to afford the median rent of $1,476/mo in ZIP 63123. The local median household income is $77,055/yr, meaning the typical household meets that threshold.

Is rent going up or down in ZIP 63123?

Rent in ZIP 63123 has decreased 8.9% over the past year as of July 20, 2026, offering some relief compared to 12 months ago.

Is ZIP 63123 an affordable place to rent?

ZIP 63123 is considered very affordable for renters. At $1,476/mo, rent takes approximately 23% of the local median household income ($77,055/yr). The standard benchmark is 30%. ZIP 63123 falls comfortably within that range.

What percentage of ZIP 63123 residents rent vs. own?

According to Census data, approximately 25.1% of ZIP 63123 households are renters, while 74.9% are owner-occupied. ZIP 63123 leans toward homeownership, which can mean a smaller rental inventory.

How does ZIP 63123 compare to the rest of Affton?

ZIP 63123 is more affordable than Affton overall. At $1,476/mo, it's $283 below the Affton citywide median of $1,759/mo.

When was rent data for ZIP 63123 last updated?

Rent data for ZIP 63123 reflects July 20, 2026. RentDataNow refreshes all data monthly using public and private datasets.
Income Affordability
23%
VERY AFFORDABLE

At $1,476/mo, rent takes ~23% of ZIP 63123's median household income ($77,055/yr). The standard benchmark is 30%.

ZIP 63123 23%Benchmark 30%
State income tax2–4.7%
Compare

How does this area stack up?

Pick another city or ZIP to compare.

Schools nearby

Public schools near ZIP 63123 (Affton, MO)

Recent submissions

Be the first to submit your rent for this ZIP.

Recent discussions

No discussions yet.