Gallatin County MT Information


Gallatin County Subdivisions

Gallatin County MT Data & Demographics (As of July 1, 2018)


Total Population 109,574
Population in Households 106,314
Population in Familes 74,140
Population in Group Qrtrs 3,260
Population Density1 42
Diversity Index2 19


Median Household Income $57,749
Average Household Income $81,227
Per Capita Income $33,364


Total Housing Units 52,028 (100%)
Owner Occupied HU 26,199 (50.4%)
Renter Occupied HU 18,476 (35.5%)
Vacant Housing Units 7,353 (14.1%)
Median Home Value $297,837
Average Home Value $385,833


Total Households 44,675
Average Household Size 2.38
Family Households 25,443
Average Family Size 3
  1. Population Density = Total Population per square mile.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 2.48% 2.62%
Households 2.46% 2.63%
Families 2.2% 2.47%
Median Household Income   2.5%
Per Capita Income   2.44%


Gallatin County MT - Peer Comparisons by Rank and Percentile

The table below compares Gallatin County to the other 56 counties and county equivalents in Montana by rank and percentile using July 1, 2018 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 3 96th
Population Density # 4 95th
Diversity Index # 24 59th
Median Household Income # 4 95th
Per Capita Income # 6 91st

Additional comparisons and rankings can be made with a VERY EASY TO USE Montana Census Data Comparison Tool.