Residential delivery area · Missouri
ZIP Code 63125: Saint Louis, MO
ZIP code 63125 uses the postal name Saint Louis, Missouri and lies mostly in St. Louis County (99% of its land) with the rest in St. Louis city (Census 2020 ZIP-county file). About 33,000 people live there (Census Bureau, ACS 2020-2024), the 8th most populous of Saint Louis's 46 residential ZIP codes. Median household income is $61,624 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Lemay (39%), Mehlville (37%) and Bella Villa (1%), and 2% in smaller places; 21% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Saint Louis · 46 residential ZIPs
- County
- St. Louis County (99%); St. Louis city (1%)
- Census places
- Lemay (39%) census-designated place; Mehlville (37%) census-designated place; Bella Villa (1%)
- Metro area
- St. Louis, MO-IL
- House districts
- MO-2 (99%), MO-1 (1%) 119th Congress, by share of land
- State
- Missouri
- Time zone
- Central
- Land area
- 9.9 sq mi · 3,353 people per sq mi
- PO Box ZIPs
- 22 more ZIP codes use the name Saint Louis for PO boxes or single organizations
Where is ZIP code 63125?
63125 centers on 38.519°, -90.293° and covers 9.9 square miles of land plus 0.8 of water. It borders 6 ZIP codes: 63123, 63111, 63129, 63128, 62240, 62236.
The map draws ZIP code areas only. For the streets inside 63125, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 63125 compare with the rest of Saint Louis?
| Measure | 63125 | In Saint Louis | In St. Louis County | In MO |
|---|---|---|---|---|
| People (ACS 2020-2024) | 33,294 | 8th of 46 | 13th of 47 | 41st of 1,035 |
| Median household income | $62k | 22nd of 38 | 34th of 44 | 278th of 479 |
| Median home value | $179k | 27th of 42 | 32nd of 45 | 291st of 494 |
Its median household income is higher than in 32% of U.S. residential ZIP codes, and it is denser than 90% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 63125?
The 2020 Census counted 32,816 people in 63125; the ACS, which samples households over 2020-2024, estimates 33,294. Between the 2010 and 2020 censuses its population grew 1.9% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 33,294
- 2020 Census count
- 32,816+1.9% since 2010 (32,201)
- Households
- 13,820
- Median age
- 38.1
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 63125?
Of the 33,294 people the ACS estimates in 63125, 20.9% are under 18 and 17.5% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (85.1%).
- Under 1820.9%
- 18 to 6461.6%
- 65 and older17.5%
- White, not Hispanic85.1%
- Black, not Hispanic4.8%
- Other or two or more4.4%
- Hispanic or Latino3.3%
- Asian, not Hispanic2.3%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 63125 earn?
Median household income is $61,624 (ACS 2020-2024), the 34th highest of the 44 ranked ZIP codes in St. Louis County. It is not measurably different from 2015-2019 ($64,491 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $61,624
- Income per person
- $34,197
- Below the poverty line
- 10.9%
- Unemployed (of the labor force)
- 3.2%
- Adults 25+ with a bachelor's degree
- 23.3%
- Adjusted gross income per tax return, 2022
- $54,08216,460 returns; wages 74% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 63125?
FHFA's house price index for 63125, built from repeat sales and appraisals of the same homes, rose 89% from 2015 to 2025 and rose 47% from 2020 to 2025, and moved +6.4% in 2025.
- Median home value (owners' estimate)
- $178,600
- Median gross rent
- $957
- Homes owned by their occupants
- 72.2%
- Housing units
- 14,949
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 63125?
660 business establishments had a location in this ZIP code in 2023, 11 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade109
- Health care and social assistance92
- Construction81
- Other services (except public administration)64
- Accommodation and food services62
- Transportation and warehousing61
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 63125?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 63123 | Saint Louis | 49,077 | $77k | 2.7 mi |
| 63111 | Saint Louis | 18,851 | $47k | 3.5 mi |
| 63129 | Saint Louis | 51,553 | $95k | 4.5 mi |
| 63128 | Saint Louis | 30,540 | $92k | 5.4 mi |
| 62240 | East Carondelet, IL | 1,796 | $96k | 6.4 mi |
| 62236 | Columbia, IL | 14,154 | $109k | 7.4 mi |
| 63116 | Saint Louis | 42,170 | $61k | 4.4 mi (near) |
| 63109 | Saint Louis | 25,236 | $70k | 4.5 mi (near) |
| 63126 | Saint Louis | 15,452 | $99k | 5.1 mi (near) |
| 63119 | Saint Louis | 34,181 | $106k | 5.8 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.