Home > MT > Mineral County > Saint Regis > Zip 59866

Zip Code 59866 — Saint Regis, MT

59866 is a ZIP Code associated with Saint Regis, MT, located within Mineral. The postal region supports an estimated population of 1,161 residents across Data Pending housing units, with a population density of 2.0 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (47.322070, -115.123290)

Data MetricLocal Statistic
Postal / Zip Code59866
Primary CitySaint Regis
State / ProvinceMT
CountyMineral
Total Population1,161
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density2.0 people/sq mi
TimezoneAmerica/Denver

How 59866 Compares

MetricZIP 59866Mineral CountyMT State Average
Population1,1615,7291,117,606
Median IncomeData PendingN/AN/A
Population Density2.0 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 59842Haugan13.0 mi46N/A
Zip 59830De Borgia17.5 mi102N/A
Zip 59872Superior18.3 mi2,501N/A
Zip 59856Paradise18.6 mi130N/A
Zip 59859Plains20.3 mi4,360N/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 →