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Zip Code 63473 — Williamstown, MO

ZIP Code 63473 is associated with Williamstown, MO, in Lewis County. The listed population estimate is 375; estimated density is 2.3 people per square mile. Among records with population estimates, it ranks #7 of 8 in Lewis County and #833 of 1,021 in MO.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (40.252630, -91.778030)

Data MetricLocal Statistic
Postal / Zip Code63473
Primary CityWilliamstown
State / ProvinceMO
CountyLewis
Total Population375
Population Density2.3 people/sq mi
TimezoneAmerica/Chicago

How 63473 Compares

MetricZIP 63473Lewis County recordsMO records
Population estimate37510,296 (sum)6,191,989 (sum)
Population Density2.3 /sq mi----
County population rank#7 of 8----
State population rank#833 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 63457Monticello6.9 mi389
ZIP 63466Saint Patrick8.5 miN/A
ZIP 63474Wyaconda9.1 mi444
ZIP 63445Kahoka10.4 mi3,831
ZIP 63435Canton10.9 mi4,318

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 →