Zip Code 63373 — Portage Des Sioux, MO

ZIP Code 63373 is associated with Portage Des Sioux, MO, in St. Charles County. The listed population estimate is 690; estimated density is 14.3 people per square mile. Among records with population estimates, it ranks #12 of 14 in St. Charles County and #706 of 1,021 in MO.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (38.927760, -90.395630)

Data MetricLocal Statistic
Postal / Zip Code63373
Primary CityPortage Des Sioux
State / ProvinceMO
CountySt. Charles
Total Population690
Population Density14.3 people/sq mi
TimezoneAmerica/Chicago

How 63373 Compares

MetricZIP 63373St. Charles County recordsMO records
Population estimate690416,486 (sum)6,191,989 (sum)
Population Density14.3 /sq mi----
County population rank#12 of 14----
State population rank#706 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 63301Saint Charles6.1 mi52,667
ZIP 63034Florissant8.0 mi18,908
ZIP 63031Florissant8.2 mi50,196
ZIP 63042Hazelwood10.2 mi17,813
ZIP 63386West Alton10.2 mi482

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 →