Gallatin County MT Information


Gallatin County Subdivisions

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


Total Population 106,815
Daytime Population: Workers 60,563
Daytime Population: Residents 45,710
Total Daytime Population (TDP) 106,273
Ratio TDP/Total Population1 0.99
Population in Households 103,555
Population in Familes 72,643
Population in Group Qrtrs 3,260
Population Density2 41
Diversity Index3 18


Median Household Income $54,249
Average Household Income $75,159
Per Capita Income $30,972


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


Total Households 43,658
Average Household Size 2.37
Family Households 24,772
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. 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 2.47% 2.51%
Households 2.48% 2.54%
Families 2.13% 2.32%
Median Household Income   3.54%
Per Capita Income   3.43%


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 Density # 4 95th
Diversity Index # 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.