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Zip Code 63645 — Fredericktown, MO

ZIP Code 63645 is associated with Fredericktown, MO, in Madison County. The listed population estimate is 11,554; estimated density is 12.4 people per square mile. Among records with population estimates, it ranks #1 of 2 in Madison County and #169 of 1,021 in MO.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (37.542040, -90.324280)

Data MetricLocal Statistic
Postal / Zip Code63645
Primary CityFredericktown
State / ProvinceMO
CountyMadison
Total Population11,554
Population Density12.4 people/sq mi
TimezoneAmerica/Chicago

How 63645 Compares

MetricZIP 63645Madison County recordsMO records
Population estimate11,55413,193 (sum)6,191,989 (sum)
Population Density12.4 /sq mi----
County population rank#1 of 2----
State population rank#169 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 63655Marquand12.2 mi1,639
ZIP 63621Arcadia14.6 mi1,632
ZIP 63640Farmington14.8 mi29,263
ZIP 63662Patton14.9 mi536
ZIP 63637Doe Run15.5 mi759

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 →