Residential delivery area · Missouri
ZIP Code 63042: Hazelwood, MO
ZIP code 63042 is in Hazelwood, Missouri, entirely in St. Louis County (Census 2020 ZIP-county file). About 18,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $49,453 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Hazelwood · its only residential ZIP
- County
- St. Louis County
- Census places
- Hazelwood
- Metro area
- St. Louis, MO-IL
- House district
- MO-1 119th Congress
- State
- Missouri
- Time zone
- Central
- Land area
- 10.4 sq mi · 1,720 people per sq mi
Where is ZIP code 63042?
63042 centers on 38.781°, -90.379° and covers 10.4 square miles of land. It borders 4 ZIP codes: 63031, 63044, 63134, 63135.
The map draws ZIP code areas only. For the streets inside 63042, 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 63042 compare with the rest of St. Louis County?
| Measure | 63042 | In St. Louis County | In MO |
|---|---|---|---|
| People (ACS 2020-2024) | 17,813 | 28th of 47 | 112th of 1,035 |
| Median household income | $50k | 39th of 44 | 418th of 479 |
| Median home value | $149k | 35th of 45 | 389th of 494 |
Its median household income is higher than in 14% of U.S. residential ZIP codes, and it is denser than 83% 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 63042?
The 2020 Census counted 19,646 people in 63042; the ACS, which samples households over 2020-2024, estimates 17,813. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 17,813
- 2020 Census count
- 19,646
- Households
- 8,593
- Median age
- 35.6
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 63042?
Of the 17,813 people the ACS estimates in 63042, 17.8% are under 18 and 17.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (42.5%), then Black (not Hispanic) (41.6%).
- Under 1817.8%
- 18 to 6465.2%
- 65 and older17.0%
- White, not Hispanic42.5%
- Black, not Hispanic41.6%
- Other or two or more9.8%
- Hispanic or Latino4.4%
- Asian, not Hispanic1.8%
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 63042 earn?
Median household income is $49,453 (ACS 2020-2024), the 39th highest of the 44 ranked ZIP codes in St. Louis County.
- Median household income
- $49,453
- Income per person
- $30,101
- Below the poverty line
- 17.9%
- Unemployed (of the labor force)
- 12.6%
- Adults 25+ with a bachelor's degree
- 22.8%
- Adjusted gross income per tax return, 2022
- $48,3679,200 returns; wages 80% 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 63042?
FHFA's house price index for 63042, built from repeat sales and appraisals of the same homes, rose 107% from 2015 to 2025 and rose 51% from 2020 to 2025, and moved +6.3% in 2025.
- Median home value (owners' estimate)
- $149,400
- Median gross rent
- $976
- Homes owned by their occupants
- 52.0%
- Housing units
- 9,465
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 63042?
666 business establishments had a location in this ZIP code in 2023, 13 fewer than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance137
- Transportation and warehousing76
- Wholesale trade72
- Retail trade65
- Other services (except public administration)49
- Accommodation and food services45
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 63042?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 63031 | Florissant | 50,196 | $71k | 2.5 mi |
| 63044 | Bridgeton | 10,324 | $78k | 2.8 mi |
| 63134 | Saint Louis | 13,059 | $45k | 3.4 mi |
| 63135 | Saint Louis | 18,381 | $52k | 4.8 mi |
| 63074 | Saint Ann | 15,793 | $52k | 3.8 mi (near) |
| 63140 | Saint Louis | 316 | $46k | 4.1 mi (near) |
| 63045 | Earth City | 0 | – | 4.6 mi (near) |
| 63043 | Maryland Heights | 21,924 | $92k | 5.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.