Home > MO > Franklin County > Union > Zip 63084

Zip Code 63084 — Union, MO

63084 is a ZIP Code associated with Union, MO, located within Franklin. The postal region supports an estimated population of 20,708 residents across Data Pending housing units, with a population density of 104.8 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (38.417490, -91.014380)

Data MetricLocal Statistic
Postal / Zip Code63084
Primary CityUnion
State / ProvinceMO
CountyFranklin
Total Population20,708
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density104.8 people/sq mi
TimezoneAmerica/Chicago

How 63084 Compares

MetricZIP 63084Franklin CountyMO State Average
Population20,708114,1376,191,989
Median IncomeData PendingN/AN/A
Population Density104.8 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 63077Saint Clair6.5 mi11,391N/A
Zip 63013Beaufort7.4 mi1,136N/A
Zip 63089Villa Ridge7.7 mi5,662N/A
Zip 63090Washington8.1 mi23,258N/A
Zip 63039Gray Summit11.1 mi986N/A

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 →