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Zip Code 63042 — Hazelwood, MO

63042 is a ZIP Code associated with Hazelwood, MO, located within St. Louis. 63042 ranks #36 out of 63 ZIP codes in St. Louis County by population (and #112 out of 1,035 in MO). The area supports an estimated population of 17,813 residents across Data Pending housing units, with a population density of 664.2 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (38.781330, -90.379090)

Data Metric	Local Statistic
Postal / Zip Code	63042
Primary City	Hazelwood
State / Province	MO
County	St. Louis
Total Population	17,813
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	664.2 people/sq mi
Timezone	America/Chicago

How 63042 Compares

Metric	ZIP 63042	St. Louis County	MO State Average
Population	17,813	1,308,579 (Total)	6,191,989 (Total)
Average ZIP Income	Data Pending	N/A	N/A
Population Density	664.2 /sq mi	--	--
County Pop Rank	#36 of 63	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 63031	Florissant	2.7 mi	50,196	N/A
Zip 63044	Bridgeton	2.7 mi	10,324	N/A
Zip 63134	Saint Louis	3.2 mi	13,059	N/A
Zip 63074	Saint Ann	3.8 mi	15,793	N/A
Zip 63140	Saint Louis	4.2 mi	316	N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →