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Zip Code 59270 — Sidney, MT

59270 is a ZIP Code associated with Sidney, MT, located within Richland. The postal region supports an estimated population of 8,571 residents across Data Pending housing units, with a population density of 3.7 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (47.572330, -104.082640)

Data MetricLocal Statistic
Postal / Zip Code59270
Primary CitySidney
State / ProvinceMT
CountyRichland
Total Population8,571
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density3.7 people/sq mi
TimezoneAmerica/Denver

How 59270 Compares

MetricZIP 59270Richland CountyMT State Average
Population8,57111,8761,117,606
Median IncomeData PendingN/AN/A
Population Density3.7 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 59217Crane7.6 mi171N/A
Zip 59262Savage20.5 mi737N/A
Zip 59221Fairview24.4 mi1,951N/A
Zip 59243Lambert30.4 mi446N/A
Zip 59315Bloomfield38.0 mi104N/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 →