US ZIP Code
63121

Saint Louis, MO

St. Louis County  ·  Missouri

● Active
👥 24,571 Population ↑ 4% since 2019
💰 $41,285 Median HH Income
▼ 46% below avg ↑ 5% since 2019
🎂 35.2 Median Age ↓ 17% since 2019
🏠 $93,900 Median Home Value
▼ 66% below avg ↑ 26% since 2019
🎓 29.0% College Grads
▼ 25% below avg
📊 12.1% Unemployment
▲ 147% above avg ↑ 34% since 2019
ZIP Code Details
ZIP Code63121
CitySaint Louis
StateMissouri (MO)
CountySt. Louis County
Area Code314/557
Elevation652 ft
Latitude38.708063
Longitude-90.300626
TimezoneChicago (DST)
FIPS29189
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 46.1% (11,320) Female 53.9% (13,251) ♀

Race & Ethnicity

White: 13.5%Hispanic: 1.7%Black: 79.6%Asian: 1.6%Other: 3.4%Race
White13.5%
Hispanic1.7%
Black79.6%
Asian1.6%
Other3.4%

Age Breakdown

Under 5
6%
5–17
16%
18–24
13%
25–44
26%
45–64
22%
65+
9%

Key Indicators

Median Age35.2 yrs ↓ 17% since 2019
Avg Household Size2.16
Below Poverty22.7% ▲ 127% above avg
College Grads29.0% ▼ 25% below avg
Unemployment12.1% ▲ 147% above avg
No HS Diploma181 (1.2%)
HS Graduate5,545 (37.1%)
Some College1,603 (10.7%)
Associates3,275 (21.9%)
Bachelors1,066 (7.1%)
Graduate Degree3,265 (21.9%)

Education

No HS: 1.2%HS Grad: 37.1%Some College: 10.7%Associates: 21.9%Bachelors: 7.1%Graduate: 21.9%Edu
No HS1.2%
HS Grad37.1%
Some College10.7%
Associates21.9%
Bachelors7.1%
Graduate21.9%
Housing & Income

Housing Tenure

Owner: 53%Renter: 47.1%Tenure
Owner53.0%
Renter47.1%

Home Value Distribution

Under $50k
15%
$50k–100k
39%
$100k–150k
18%
$150k–200k
8%
$200k–300k
13%
$300k–500k
6%
Over $500k
1%

Financials

Median HH Income$41,285 ▼ 46% below avg ↑ 5% since 2019
Median Home Value$93,900 ▼ 66% below avg ↑ 26% since 2019
Home/Income Ratio2.3x (nat avg ~3.5x)
Median Rent$938/mo ↑ 8% since 2019
Total Units12,745
Vacant Units1,829
Avg HH Size2.16

Income Distribution

Under $25k
29%
$25k–50k
28%
$50k–75k
18%
$75k–100k
10%
$100k–150k
9%
$150k–200k
3%
Over $200k
2%
Employment & Commute

How People Get to Work

Drove Alone
79%
Public Transit
6%
Walked
5%
Work From Home
10%

Commute Time

Under 15 min
22%
15–30 min
53%
30–45 min
19%
Over 45 min
7%
Housing Stock

Year Built

Before 1940
14%
1940s–1950s
24%
1960s–1970s
2%
1980s–1990s
1%
2000+
59%

Summary

Total Units12,745
Vacant1,829
Owner Occupied53.0%
Renter Occupied47.1%
Avg HH Size2.16
Frequently Asked Questions
ZIP code 63121 is in Saint Louis, MO, in St. Louis County.
ZIP code 63121 is located in Missouri (MO).
ZIP code 63121 is in St. Louis County, MO.
ZIP 63121 observes the Chicago timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 63121 is 24,571 people (ACS 2023).
The median household income in ZIP code 63121 is $41,285 (ACS 2023).
The median home value in ZIP 63121 is $93,900 (ACS 2023).
About ZIP Code 63121

ZIP code 63121 is located in Saint Louis, Missouri, within St. Louis County. With a population of 24,571, this is a moderately populated ZIP code with a relatively young community — the median age is 35.2 years. Economically, 63121 is a working-class ZIP code: the median household income of $41,285 is below the national average.

Real estate in ZIP code 63121 represents one of the more affordable housing markets in the country. The median home value of $93,900 is well below the national average. Renters can expect to pay around $938 per month in median rent. The area has a relatively balanced mix of owners (53.0%) and renters (47.1%). Median home values have increased by 26% since 2019.

The population of 63121 is primarily Black (79.61%). Residents are moderately educated — 29.0% hold a bachelor's degree or higher, which is below the national average. Poverty affects a significant share of residents at 22.7%. Household income has grown by 5% since 2019.

The unemployment rate in 63121 stands at 12.1%, which is more than double the national average. As in most parts of the country, driving alone is the dominant commute mode at 73%.

Overall, ZIP code 63121 in Saint Louis, MO is characterized as working-class, moderately educated, and a relatively young community. With 24,571 residents, a median household income of $41,285, and a median home value of $93,900, it offers a clear picture of life in this part of Missouri.