Zip Code 63109
Saint Louis, Missouri — St. Louis City
📍 ZIP code 63109 is in Saint Louis, St. Louis City, Missouri.
ZIP code 63109 is located in Saint Louis, St. Louis City, Missouri. It is a zip code in the Central (CST/CDT) Time Zone with an estimated population of 25,743. The area code for ZIP code 63109 is 314.
Quick Answer
Zip code 63109 is in Saint Louis, Missouri (St. Louis City). It has a population of 25,743, median household income of $71,563, and median home value of $244,900.
Population
25,743
Income
$71,563
Home Value
$244,900
Climate
90°F / 25°F
About Zip Code 63109
Zip code 63109 is located in Saint Louis, Missouri, within St. Louis City. Home to approximately 25,743 residents, this area sits at an elevation of 477 ft and falls within the Central (CST/CDT) timezone. The local area code is 314.
The median household income is $71,563 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $244,900, and the cost of living index is 85 (15% below the national average of 100).
Summers average a high of 90°F while winters drop to 25°F. The area receives about 44 in of rain and 11 in of snow annually. The zip code covers 3.6 square miles of land area and 0.1 square miles of water.
Key Statistics
25,743
$71,563
$244,900
Central (CST/CDT)
314
477 ft
3.6 sq mi
41.2
14,963
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Compare With Nearby Zip Codes
| Metric | 63109 | 63116 | 63139 | 63143 | 63111 | 63119 |
|---|---|---|---|---|---|---|
| City | Saint Louis, MO | Saint Louis, MO | Saint Louis, MO | Saint Louis, MO | Saint Louis, MO | Saint Louis, MO |
| Population | 25,743 | 42,470 | 21,811 | 8,968 | 19,093 | 34,574 |
| Median Income | $71,563 | $60,193 | $74,749 | $65,712 | $43,295 | $103,287 |
| Home Value | $244,900 | $161,100 | $199,400 | $226,300 | $115,500 | $330,800 |
| Cost of Living | 85 | 63 | 79 | 79 | 60 | 120 |
| Median Age | 41.2 | 36.2 | 35.6 | 33.6 | 35.6 | 40.9 |
Cost of Living
100 = National Average. Saint Louis's cost of living is 15% below the national average.
vs. State Avg
Below
Affordability
Affordable
Income-to-Home
3.4x
Demographics
Zip code 63109 has a population of 25,743 people with a median age of 41.2. There are 14,963 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Saint Louis (63109) population trend from 2010 to 2024
↓ -12.5%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
90°F
25°F
44 in
11 in
Saint Louis experiences hot summers with average highs around 90°F. Winters are cool with lows averaging 25°F. The area receives about 11 in of snow per year.
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Housing & Economy
Median Home Value
$244,900
Median Household Income
$71,563
With 14,963 housing units across 3.6 square miles, 63109 has a housing density of 4,156 units per square mile. The home price-to-income ratio is 3.4x.
Location & Geography
Latitude
38.5846°
Longitude
-90.2944°
Land Area
3.6 sq mi
Water Area
0.1 sq mi
Nearby Zip Codes
Zip codes closest to 63109 (Saint Louis, MO) with distances:
All Zip Codes in Saint Louis, MO
Other zip codes serving Saint Louis:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 63109's $71,563. A way to compare Saint Louis to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 63109 (Saint Louis, MO). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Saint Louis, Missouri?
Saint Louis, Missouri uses zip code 63109 along with 10 other zip codes.
What county is zip code 63109 in?
Zip code 63109 is located in St. Louis City, Missouri.
What is the population of zip code 63109?
The population of zip code 63109 is 25,743 with a median age of 41.2.
Is 63109 in Saint Louis, Missouri?
Yes, zip code 63109 is in Saint Louis, St. Louis City, Missouri. The area code is 314.
Frequently Asked Questions
What city is zip code 63109 in?
Zip code 63109 is in Saint Louis, Missouri. It is part of St. Louis City and uses the Central (CST/CDT) timezone.
What is zip code 63109?
Zip code 63109 is a U.S. postal code in Saint Louis, Missouri (St. Louis City). It has a population of 25,743 and covers 3.6 square miles.
What is the population of zip code 63109?
The population of zip code 63109 (Saint Louis, MO) is 25,743 with a median age of 41.2. There are approximately 14,963 housing units in this area.
What is the median income in zip code 63109?
The median household income in zip code 63109 (Saint Louis, MO) is $71,563 per year. The cost of living index is 85 (100 = national average).
What is the average home price in zip code 63109?
The median home value in zip code 63109 (Saint Louis, MO) is $244,900. The cost of living index is 85 compared to the national average of 100.
What county is zip code 63109 in?
Zip code 63109 is located in St. Louis City, Missouri. The primary city is Saint Louis.
What is the area code for zip code 63109?
Zip code 63109 in Saint Louis, MO uses area code 314. It is located in the Central (CST/CDT) timezone.
Is zip code 63109 a good place to live?
Zip code 63109 (Saint Louis, MO) has a cost of living index of 85 (100 = national average), a median household income of $71,563, and median home values of $244,900. The median age is 41.2. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 63109?
The cost of living index for zip code 63109 (Saint Louis, MO) is 85, where 100 represents the national average. This area is below the national average. Median home value: $244,900.
What schools serve zip code 63109?
Zip code 63109 in Saint Louis, Missouri is served by the local school district of St. Louis City. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.