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Zip Code 59638 — Jefferson City, MT

59638 is a ZIP Code associated with Jefferson City, MT, located within Jefferson. The postal region supports an estimated population of 769 residents across Data Pending housing units, with a population density of 4.9 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (46.357900, -112.027720)

Data MetricLocal Statistic
Postal / Zip Code59638
Primary CityJefferson City
State / ProvinceMT
CountyJefferson
Total Population769
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density4.9 people/sq mi
TimezoneAmerica/Denver

How 59638 Compares

MetricZIP 59638Jefferson CountyMT State Average
Population76913,2761,117,606
Median IncomeData PendingN/AN/A
Population Density4.9 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 59634Clancy5.5 mi5,521N/A
Zip 59632Boulder13.4 mi2,557N/A
Zip 59601Helena14.5 mi31,728N/A
Zip 59623Helena16.0 miN/AN/A
Zip 59625Helena16.8 mi663N/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 →