Fergus County MT Information


Fergus County Subdivisions

Fergus County MT Data & Demographics (As of July 1, 2020)


Total Population 11,751 (100%)
Population in Households 11,286 (96.0%)
Population in Families 8,785 (74.8%)
Population in Group Quarters1 465 ( 4.0%)
Population Density 3
Diversity Index2 14


Median Household Income $55,250
Average Household Income $72,547
% of Income for Mortgage4 12%
Per Capita Income $32,361
Wealth Index5 79


Total HU (Housing Units) 6,046 (100%)
Owner Occupied HU 3,780 (62.5%)
Renter Occupied HU 1,454 (24.0%)
Vacant Housing Units 812 (13.4%)
Median Home Value $159,388
Average Home Value $211,911
Housing Affordability Index3 191


Total Households 5,234
Average Household Size 2.16
Family Households 3,212
Average Family Size 3
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  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 races 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.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.


2010-2020 2020-2025
Population 0.14% -0.18%
Households 0.26% -0.11%
Families 0.03% -0.24%
Median Household Income   1.0%
Per Capita Income   1.73%
Owner Occupied HU   -0.1%


Fergus County MT - Peer Comparisons by Rank and Percentile

The table below compares Fergus County to the other 56 counties and county equivalents in Montana by rank and percentile using July 1, 2020 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 # 17 71st
Population Density # 27 52nd
Median Household Income # 17 71st
Housing Affordability Index # 41 73rd
Per Capita Income # 14 77th
Diversity Index # 41 27th

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

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