Zip Code 63648 — Irondale, MO

ZIP Code 63648 is associated with Irondale, MO, in Washington County. The listed population estimate is 1,858; estimated density is 22.9 people per square mile. Among records with population estimates, it ranks #4 of 10 in Washington County and #466 of 1,021 in MO.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (37.818700, -90.698780)

Data MetricLocal Statistic
Postal / Zip Code63648
Primary CityIrondale
State / ProvinceMO
CountyWashington
Total Population1,858
Population Density22.9 people/sq mi
TimezoneAmerica/Chicago

How 63648 Compares

MetricZIP 63648Washington County recordsMO records
Population estimate1,85821,955 (sum)6,191,989 (sum)
Population Density22.9 /sq mi----
County population rank#4 of 10----
State population rank#466 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 63624Bismarck5.6 mi3,447
ZIP 63660Mineral Point6.5 mi2,784
ZIP 63653Leadwood6.7 mi1,186
ZIP 63631Caledonia6.9 mi544
ZIP 63601Park Hills8.5 mi16,389

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 →