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Unionville, MT Profile: Facts & Data

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Unionville, Montana - Basic Facts

The Unionville CDP(1) had a population of 209 as of July 1, 2025.

The primary coordinate point for Unionville is located at latitude 46.5413 and longitude -112.085 in Lewis and Clark County. Lewis and Clark County is in the Mountain time zone (GMT -7).

It also has a Functional Status Code of ""

Montana is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The Unionville Census Designated Place is located within Helena Division of Lewis and Clark County.


  1. A Census Designated Place (CDP) is a statistical counterpart to a self-governing (incorporated) place such as a city, town, or village. A CDP is not a legal entity and has no governmental functions.

Jump to... (On This Page!)
  1. Unionville 2025 Demographic Data
  2. Growth Rates for Unionville (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 - 2025 Demographics
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Unionville, MT Data & Demographics (As of July 1, 2025)

POPULATION

Total Population 209 (100%)
Population in Households 209 (100.0%)
Population in Families 153 (73.2%)
Population in Group Quarters1 0
Population Density 163
Diversity Index2 27
 
 

INCOME

Median Household Income $62,230
Average Household Income $79,269
% of Income for Mortgage4 0%
Per Capita Income $34,893
Wealth Index5 60
Socioeconomic Status Index6 Moderate (56.4)
 

HOUSING

Total HU (Housing Units) 103 (100%)
Owner Occupied HU 39 (37.9%)
Renter Occupied HU 53 (51.5%)
Vacant Housing Units 11 (10.7%)
Median Home Value $468,750
Average Home Value $555,897
Housing Affordability Index3 0
 

HOUSEHOLDS

Total Households 92
Average Household Size 2.27
Family Households 45
Average Family Size 3.00
NOTES
  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.
  6. The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

GROWTH RATE / YEAR

 2020-2025 2025-2030
Population 0.28% 1.21%
Households 0.85% 1.48%
Families   -0.45%
Median Household Income   3.93%
Per Capita Income   3.57%
Owner Occupied HU   2.44%

Unionville, MT - Peer Comparisons by Rank and Percentile

The table below compares Unionville to the other 497 incorporated cities, towns and CDPs in Montana by rank and percentile using July 1, 2025 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 # 240 52nd
Population Density # 241 52nd
Median Household Income # 266 47th
Housing Affordability Index # 105 21st
Per Capita Income # 279 44th
Diversity Index # 171 66th

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

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