ZIP Code 62258

Zip Code: 62258
Type: Standard
Official USPS city name: Mascoutah
Official USPS State Code: IL
Official State Name: Illinois
ZCTA: TRUE
Population: 9491.0
Density: 49.9
Primary Official County Code: 17163
Primary Official County Name: St. Clair
Official County Name: St. Clair
Official County Code: 17163
Imprecise: FALSE
Military: FALSE
Timezone: America/Chicago (14:13 PM Saturday, June 13 2026-06-13 (GMT -0500))
Geo Point: 38.46213, -89.77254

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