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Zip Code 59912 — Columbia Falls, MT

ZIP Code 59912 is associated with Columbia Falls, MT, in Flathead County. The listed population estimate is 15,752; estimated density is 32.2 people per square mile. Among records with population estimates, it ranks #2 of 14 in Flathead County and #18 of 368 in MT.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (48.438790, -114.168980)

Data MetricLocal Statistic
Postal / Zip Code59912
Primary CityColumbia Falls
State / ProvinceMT
CountyFlathead
Total Population15,752
Population Density32.2 people/sq mi
TimezoneAmerica/Denver

How 59912 Compares

MetricZIP 59912Flathead County recordsMT records
Population estimate15,752104,257 (sum)1,117,606 (sum)
Population Density32.2 /sq mi----
County population rank#2 of 14----
State population rank#18 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 59919Hungry Horse6.7 mi679
ZIP 59926Martin City9.2 mi268
ZIP 59913Coram10.2 mi582
ZIP 59937Whitefish15.1 mi15,114
ZIP 59901Kalispell18.1 mi63,161

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 →