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Zip Code 63357 — Marthasville, MO

ZIP Code 63357 is associated with Marthasville, MO, in Warren County. The listed population estimate is 6,536; estimated density is 20.5 people per square mile. Among records with population estimates, it ranks #3 of 6 in Warren County and #250 of 1,021 in MO.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (38.655180, -91.094700)

Data MetricLocal Statistic
Postal / Zip Code63357
Primary CityMarthasville
State / ProvinceMO
CountyWarren
Total Population6,536
Population Density20.5 people/sq mi
TimezoneAmerica/Chicago

How 63357 Compares

MetricZIP 63357Warren County recordsMO records
Population estimate6,53637,430 (sum)6,191,989 (sum)
Population Density20.5 /sq mi----
County population rank#3 of 6----
State population rank#250 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 63090Washington8.9 mi23,258
ZIP 63068New Haven10.7 mi6,202
ZIP 63390Wright City10.7 mi10,970
ZIP 63380Truesdale11.0 mi990
ZIP 63332Augusta11.6 mi1,651

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 →