Residential delivery area · Missouri
ZIP Code 63128: Saint Louis, MO
ZIP code 63128 uses the postal name Saint Louis, Missouri and lies entirely in St. Louis County (Census 2020 ZIP-county file). About 31,000 people live there (Census Bureau, ACS 2020-2024), the 10th most populous of Saint Louis's 46 residential ZIP codes. Median household income is $92,359 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Concord (27%), Sunset Hills (15%) and Sappington (8%); 50% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Saint Louis · 46 residential ZIPs
- County
- St. Louis County
- Census places
- Concord (27%) census-designated place; Sunset Hills (15%); Sappington (8%) census-designated place
- Metro area
- St. Louis, MO-IL
- House district
- MO-2 119th Congress
- State
- Missouri
- Time zone
- Central
- Land area
- 15.6 sq mi · 1,952 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 63128?
63128 centers on 38.492°, -90.387° and covers 15.6 square miles of land plus 0.4 of water. It borders 7 ZIP codes: 63127, 63026, 63126, 63010, 63129, 63123, 63125.
The map draws ZIP code areas only. For the streets inside 63128, 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 63128 compare with the rest of Saint Louis?
| Measure | 63128 | In Saint Louis | In St. Louis County | In MO |
|---|---|---|---|---|
| People (ACS 2020-2024) | 30,540 | 10th of 46 | 15th of 47 | 47th of 1,035 |
| Median household income | $92k | 11th of 38 | 20th of 44 | 66th of 479 |
| Median home value | $339k | 12th of 42 | 17th of 45 | 56th of 494 |
Its median household income is higher than in 75% of U.S. residential ZIP codes, and it is denser than 84% 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 63128?
The 2020 Census counted 29,728 people in 63128; the ACS, which samples households over 2020-2024, estimates 30,540. Between the 2010 and 2020 censuses its population grew 1.3% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 30,540
- 2020 Census count
- 29,728+1.3% since 2010 (29,356)
- Households
- 13,032
- Median age
- 47.9
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 63128?
Of the 30,540 people the ACS estimates in 63128, 17.7% are under 18 and 27.8% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (91.3%).
- Under 1817.7%
- 18 to 6454.6%
- 65 and older27.8%
- White, not Hispanic91.3%
- Other or two or more5.1%
- Black, not Hispanic1.5%
- Hispanic or Latino1.3%
- Asian, not Hispanic0.9%
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 63128 earn?
Median household income is $92,359 (ACS 2020-2024), the 20th highest of the 44 ranked ZIP codes in St. Louis County. It is not measurably different from 2015-2019 ($95,315 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $92,359±$9,940
- Income per person
- $56,137
- Below the poverty line
- 4.7%
- Unemployed (of the labor force)
- 4.3%
- Adults 25+ with a bachelor's degree
- 45.4%
- Adjusted gross income per tax return, 2022
- $110,24715,530 returns; wages 58% 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 63128?
FHFA's house price index for 63128, built from repeat sales and appraisals of the same homes, rose 69% from 2015 to 2025 and rose 39% from 2020 to 2025, and moved +2.1% in 2025.
- Median home value (owners' estimate)
- $338,700
- Median gross rent
- $1,193
- Homes owned by their occupants
- 79.3%
- Housing units
- 13,641
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 63128?
751 business establishments had a location in this ZIP code in 2023, 34 fewer than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance189
- Construction77
- Professional, scientific, and technical services68
- Retail trade62
- Other services (except public administration)58
- Finance and insurance55
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 63128?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 63127 | Saint Louis | 5,268 | $123k | 3.4 mi |
| 63026 | Fenton | 45,354 | $98k | 4.0 mi |
| 63126 | Saint Louis | 15,452 | $99k | 4.0 mi |
| 63010 | Arnold | 34,478 | $80k | 4.3 mi |
| 63129 | Saint Louis | 51,553 | $95k | 4.3 mi |
| 63123 | Saint Louis | 49,077 | $77k | 5.0 mi |
| 63125 | Saint Louis | 33,294 | $62k | 5.4 mi |
| 63122 | Saint Louis | 41,634 | $136k | 6.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.