Zip Code 63042 — Hazelwood, MO

ZIP Code 63042 is associated with Hazelwood, MO, in St. Louis County. The listed population estimate is 17,813; estimated density is 664.2 people per square mile. Among records with population estimates, it ranks #36 of 61 in St. Louis County and #112 of 1,021 in MO.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (38.781330, -90.379090)

Data MetricLocal Statistic
Postal / Zip Code63042
Primary CityHazelwood
State / ProvinceMO
CountySt. Louis
Total Population17,813
Population Density664.2 people/sq mi
TimezoneAmerica/Chicago

How 63042 Compares

MetricZIP 63042St. Louis County recordsMO records
Population estimate17,8131,308,579 (sum)6,191,989 (sum)
Population Density664.2 /sq mi----
County population rank#36 of 61----
State population rank#112 of 1,021----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in MO

ZIP CodeCityDistancePopulation estimate
ZIP 63031Florissant2.7 mi50,196
ZIP 63044Bridgeton2.7 mi10,324
ZIP 63134Saint Louis3.2 mi13,059
ZIP 63074Saint Ann3.8 mi15,793
ZIP 63140Saint Louis4.2 mi316

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 →