Residential delivery area · Missouri
ZIP Code 63138: Saint Louis, MO
ZIP code 63138 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 18,000 people live there (Census Bureau, ACS 2020-2024), the 23rd most populous of Saint Louis's 46 residential ZIP codes. Median household income is $56,096 (Census Bureau, ACS 2020-2024). By Census place, 40% of its land lies in Spanish Lake (a census-designated place), and 1% in smaller places; 59% 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
- Spanish Lake census-designated place
- Metro area
- St. Louis, MO-IL
- House district
- MO-1 119th Congress
- State
- Missouri
- Time zone
- Central
- Land area
- 18.5 sq mi · 984 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 63138?
63138 centers on 38.801°, -90.192° and covers 18.5 square miles of land plus 2.2 of water. It borders 6 ZIP codes: 62048, 63137, 63033, 63386, 63136, 63034.
The map draws ZIP code areas only. For the streets inside 63138, 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 63138 compare with the rest of Saint Louis?
| Measure | 63138 | In Saint Louis | In St. Louis County | In MO |
|---|---|---|---|---|
| People (ACS 2020-2024) | 18,233 | 23rd of 46 | 26th of 47 | 108th of 1,035 |
| Median household income | $56k | 25th of 38 | 35th of 44 | 350th of 479 |
| Median home value | $139k | 29th of 42 | 36th of 45 | 400th of 494 |
Its median household income is higher than in 23% of U.S. residential ZIP codes, and it is denser than 78% 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 63138?
The 2020 Census counted 18,852 people in 63138; the ACS, which samples households over 2020-2024, estimates 18,233. Between the 2010 and 2020 censuses its population fell 6.6% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 18,233
- 2020 Census count
- 18,852−6.6% since 2010 (20,175)
- Households
- 7,339
- Median age
- 33.1
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 63138?
Of the 18,233 people the ACS estimates in 63138, 27.0% are under 18 and 11.9% are 65 or older. The largest group by race and Hispanic origin is Black (not Hispanic) (79.3%), then White (not Hispanic) (15.2%).
- Under 1827.0%
- 18 to 6461.1%
- 65 and older11.9%
- Black, not Hispanic79.3%
- White, not Hispanic15.2%
- Other or two or more3.7%
- Hispanic or Latino1.2%
- Asian, not Hispanic0.6%
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 63138 earn?
Median household income is $56,096 (ACS 2020-2024), the 35th highest of the 44 ranked ZIP codes in St. Louis County. It rose from $46,694 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $56,096
- Income per person
- $30,043
- Below the poverty line
- 14.6%
- Unemployed (of the labor force)
- 7.1%
- Adults 25+ with a bachelor's degree
- 15.6%
- Adjusted gross income per tax return, 2022
- $41,1397,810 returns; wages 82% 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 63138?
FHFA's house price index for 63138, built from repeat sales and appraisals of the same homes, rose 81% from 2015 to 2025 and rose 38% from 2020 to 2025, and moved +7.3% in 2025.
- Median home value (owners' estimate)
- $139,100
- Median gross rent
- $1,161
- Homes owned by their occupants
- 49.9%
- Housing units
- 9,082
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 63138?
158 business establishments had a location in this ZIP code in 2023, 83 fewer than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance53
- Retail trade25
- Other services (except public administration)18
- Real estate and rental and leasing15
- Construction9
- Administrative and support and waste management and remediation services8
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 63138?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 62048 | Hartford, IL | 1,347 | $41k | 3.6 mi |
| 63137 | Saint Louis | 19,684 | $43k | 3.7 mi |
| 63033 | Florissant | 43,056 | $67k | 4.4 mi |
| 63386 | West Alton | 482 | $110k | 5.0 mi |
| 63136 | Saint Louis | 40,929 | $41k | 5.3 mi |
| 63034 | Florissant | 18,908 | $104k | 6.0 mi |
| 62087 | South Roxana, IL | 2,181 | $60k | 6.6 mi (near) |
| 63135 | Saint Louis | 18,381 | $52k | 6.7 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.