Home > MO > St. Francois County > Farmington > Zip 63640

Zip Code 63640 — Farmington, MO

ZIP Code 63640 is associated with Farmington, MO, in St. Francois County. The listed population estimate is 29,263; estimated density is 54.0 people per square mile. Among records with population estimates, it ranks #1 of 8 in St. Francois County and #51 of 1,021 in MO.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (37.754460, -90.365250)

Data MetricLocal Statistic
Postal / Zip Code63640
Primary CityFarmington
State / ProvinceMO
CountySt. Francois
Total Population29,263
Population Density54.0 people/sq mi
TimezoneAmerica/Chicago

How 63640 Compares

MetricZIP 63640St. Francois County recordsMO records
Population estimate29,26369,527 (sum)6,191,989 (sum)
Population Density54.0 /sq mi----
County population rank#1 of 8----
State population rank#51 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 63637Doe Run9.1 mi759
ZIP 63601Park Hills10.8 mi16,389
ZIP 63653Leadwood14.2 mi1,186
ZIP 63670Sainte Genevieve14.8 mi12,293
ZIP 63645Fredericktown14.8 mi11,554

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 →