![]() | Saint Charles, MO 63301/63302/63303/63304 Post Office Location: 112 South 5th Street/1600 Woodstone Drive/4207 South Old Highway 94; Saint Charles, MO Year Post Office built: Town(s) Served: Saint Charles Acceptable City Names: Cottleville, Saint Charles, Saint Peters, St Peters, Weldon Springs Not Acceptable City Names: Black Walnut, Harvester, Kampville, Kampville Beach, Kampville Court, Orchard Farm, South Shore, Weldon Springs Heights Sectional Service Facility: St. Louis County(ies): St. Charles Info on St. Charles: The City of Saint Charles is the county seat of Saint Charles County. Interstate 70 cust through the middle of town. This is the thrid oldest city west of the Mississippi River, dating back to 1765. It was the Missouri state capital from 1821 to 1826. Saint Charles does lay claim along with Kansas and Pennsylvania to the first interstate highway. |
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