Jefferson County MT Information


Jefferson County Subdivisions

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  1. Jefferson County 2018 Demographic Data
  2. Growth Rates forJefferson County (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Montana Research Tools (Easy Tools & Current Data)
  3. Montana Data Comparison Tool - 2018 Demographics

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


Total Population 11,954
Population in Households 11,724
Population in Familes 9,919
Population in Group Qrtrs 230
Population Density2 7
Diversity Index3 15


Median Household Income $67,972
Average Household Income $89,985
Per Capita Income $35,908


Total Housing Units 5,278 (100%)
Owner Occupied HU 3,905 (74.0%)
Renter Occupied HU 829 (15.7%)
Vacant Housing Units 544 (10.3%)
Median Home Value $274,952
Average Home Value $322,810


Total Households 4,734
Average Household Size 2.48
Family Households 3,415
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2018 2018-2023
Population 0.57% 0.69%
Households 0.58% 0.7%
Families 0.41% 0.61%
Median Household Income   2.66%
Per Capita Income   2.46%


Jefferson County MT - Peer Comparisons by Rank and Percentile

The table below compares Jefferson 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 # 16 73rd
Population Density # 11 82nd
Diversity Index # 39 32nd
Median Household Income # 1 100th
Per Capita Income # 1 100th

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

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Montana Census Data Comparison Tool

Compare Montana July 1, 2018 Data
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