American Falls, ID Profile: Facts & Data


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American Falls, Idaho - Basic Facts

The City of American Falls had a population of 4,535 as of July 1, 2020. American Falls ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Idaho. See peer rankings below.

The primary coordinate point for American Falls is located at latitude 42.786 and longitude -112.8544 in Power County. The formal boundaries for the City of American Falls encompass a land area of 1.69 sq. miles and a water area of 0 sq. miles. Power County is in the Mountain time zone (GMT -7). The elevation is 4,406 feet.

The City of American Falls (GNIS ID: 2409696) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Idaho is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The City of American Falls is located within American Falls Division of Power County.


American Falls, ID Data & Demographics (As of July 1, 2020)


Total Population 4,535 (100%)
Population in Households 4,496 (99.1%)
Population in Families 3,909 (86.2%)
Population in Group Quarters1 39 ( 0.9%)
Population Density 2,811
Diversity Index2 80


Median Household Income $50,630
Average Household Income $56,670
% of Income for Mortgage4 11%
Per Capita Income $18,319
Wealth Index5 46


Total HU (Housing Units) 1,616 (100%)
Owner Occupied HU 941 (58.2%)
Renter Occupied HU 539 (33.4%)
Vacant Housing Units 136 ( 8.4%)
Median Home Value $132,941
Average Home Value $132,484
Housing Affordability Index3 218


Total Households 1,480
Average Household Size 3.04
Family Households 1,095
Average Family Size 4
  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 0.3% 0.31%
Households 0.13% 0.22%
Families 0.06% 0.13%
Median Household Income   0.33%
Per Capita Income   1.24%
Owner Occupied HU   0.08%


American Falls, ID - Peer Comparisons by Rank and Percentile

The table below compares American Falls to the other 227 incorporated cities, towns and CDPs in Idaho 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 # 35 85th
Population Density # 12 95th
Median Household Income # 115 50th
Housing Affordability Index # 203 89th
Per Capita Income # 206 10th
Diversity Index # 3 99th

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

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