Big Arm, MT Profile: Facts, Map & Data


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Big Arm, Montana - Basic Facts

The Big Arm Census Designated Place is a community or populated place (Class Code U5) located in Lake County at latitude 47.7936 and longitude -114.27. Lake County is in the Mountain time zone (GMT -7). The elevation is 2,946 feet.

The formal official name is the Big Arm Census Designated Place, but most people and references simply refer to it as Big Arm, Montana.

The U5 Census Class Code for Big Arm indicates a populated place that is also a census designated place with the same name.. The Census Designated Place has a Functional Status Code "S" which identifies a statistical entity.

The formal boundaries for the Big Arm Census Designated Place (see map below) encompass a land area of 5.42 sq. miles and a water area of 0 sq. miles.

Big Arm Census Designated Place, MT Boundary Map


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Boundary Maps: Flathead Division | Lake County | Montana Counties

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Big Arm, MT Data & Demographics (As of July 1, 2014)


Total Population 187
Population in Households 187
Population in Familes 151
Population in Group Qrtrs 0
Population Density1 35
Diversity Index2 52


Total Households 77
Average Household Size 2.43
Family Households 52
Average Family Size 3


Total Housing Units 177 (100%)
Owner Occupied HU 61 (34.5%)
Renter Occupied HU 16 ( 9.0%)
Vacant Housing Units 100 (56.5%)
Median Home Value $200,000
Average Home Value $256,048


Median Household Income $38,917
Average Household Income $53,986
Per Capita Income $22,896
  (Compound Annual Growth Rates)


2010-2014 2014-2019
Population 1.3% 0.94%
Households 1.59% 1.02%
Families 1.9% 1.13%
Median Household Income   3.41%
Per Capita Income   1.75%
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.


Big Arm, MT - Peer Comparisons by Rank and Percentile

The table below compares Big Arm to the other 364 incorporated cities, towns and CDPs in Montana by rank and percentile using July 1, 2014 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 # 253 31st
Population Density1 # 297 19th
Diversity Index2 # 18 95th
Median Household Income # 223 39th
Per Capita Income # 228 38th

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