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🇺🇸 United States ZIP Code

STANDARD

63125

Saint Louis

ZIP Code 63125 is a standard zip code serving Saint Louis, Saint Louis, Missouri (MO), in St. Louis County, United States. It has an estimated population of 32,201 with a median household income of $44,458. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

$0 National: $37,585 $150K+ $44,458

Location

Country
🇺🇸 United States
State / Province
Missouri (MO)
County
St. Louis
City
Saint Louis
Timezone
America/Chicago

Coordinates

Latitude
38.522200
Longitude
-90.302100

Geographic Details

Land Area
9.93 mi²
Water Area
0.79 mi²
Population Density
3242.0 people per mi² (90th percentile)
Bounding Box
38.553014°N, 38.486607°S, -90.257413°E, -90.336155°W

With 32,201 residents spread across 9.93 square miles, this area has a population density of 3242.0 people per square mile.

Demographics

32,201

Population

90th percentile

$44,458

Median Income

40th percentile

$123,800

Median Home Value

45th percentile

9.93 mi²

Land Area

The median household income in 63125 is $44,458, and the median home value is $123,800.

Housing

14,961

Total Units

13,884

Occupied Units

92.8%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Saint Louis, MO.

63101

Saint Louis

 63102

Saint Louis

 63103

Saint Louis

 63104

Saint Louis

 63105

Saint Louis

 63106

Saint Louis

 63107

Saint Louis

 63108

Saint Louis

 63109

Saint Louis

 63110

Saint Louis

Similar ZIP Codes in Missouri

ZIP codes with similar median household income in Missouri.

63016

Cedar Hill

$50,292

 63020

De Soto

$44,640

 63042

Hazelwood

$42,648

 63044

Bridgeton

$47,415

 63055

Labadie

$43,385

 63056

Leslie

$44,345

 63069

Pacific

$50,956

 63070

Pevely

$40,795

Frequently Asked Questions

What information is available for each ZIP code?
Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).
What are the different types of ZIP codes?
There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.
How often is ZIP code data updated?
ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.
What is population density and why does it matter?
Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.
How are ZIP code boundaries determined?
ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.
What does median household income tell me about a ZIP code?
Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.