Gallatin County MT Information


Gallatin County Subdivisions

Gallatin County MT Data & Demographics (As of July 1, 2017)


Total Population 106,815
Population in Households 103,555
Population in Familes 72,643
Population in Group Qrtrs 3,260
Population Density1 41
Diversity Index2 18


Total Households 43,658
Average Household Size 2.37
Family Households 24,772
Average Family Size 3


Total Housing Units 50,121 (100%)
Owner Occupied HU 25,096 (50.1%)
Renter Occupied HU 18,562 (37.0%)
Vacant Housing Units 6,463 (12.9%)
Median Home Value $285,804
Average Home Value $357,553


Median Household Income $54,249
Average Household Income $75,159
Per Capita Income $30,972
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 2.47% 2.51%
Households 2.48% 2.54%
Families 2.13% 2.32%
Median Household Income   3.54%
Per Capita Income   3.43%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.


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, 2017 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 Density1 # 4 95th
Diversity Index2 # 27 54th
Median Household Income # 6 91st
Per Capita Income # 10 84th

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