Zip Code 59803 — Missoula, MT

ZIP Code 59803 is associated with Missoula, MT, in Missoula County. The listed population estimate is 18,401; estimated density is 73.3 people per square mile. Among records with population estimates, it ranks #4 of 14 in Missoula County and #17 of 368 in MT.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (46.777810, -113.958260)

Data MetricLocal Statistic
Postal / Zip Code59803
Primary CityMissoula
State / ProvinceMT
CountyMissoula
Total Population18,401
Population Density73.3 people/sq mi
TimezoneAmerica/Denver

How 59803 Compares

MetricZIP 59803Missoula County recordsMT records
Population estimate18,401119,280 (sum)1,117,606 (sum)
Population Density73.3 /sq mi----
County population rank#4 of 14----
State population rank#17 of 368----

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 MT

ZIP CodeCityDistancePopulation estimate
ZIP 59801Missoula5.9 mi30,916
ZIP 59812Missoula5.9 mi1,181
ZIP 59851Milltown7.7 mi145
ZIP 59802Missoula9.0 mi19,864
ZIP 59833Florence10.8 mi6,316

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 →