Mountain Plains Flag

Mountain Plains

County:
Butte County
County Seat:
No
Area (mi²):
1.595
State:
South Dakota

Mountain Plains is a CDP located in Butte County, South Dakota. Mountain Plains has a 2025 population of 601 . Mountain Plains is currently growing at a rate of 7.13% annually and its population has increased by 52.54% since the most recent census, which recorded a population of 394 in 2020.

The average household income in Mountain Plains is $321,188 with a poverty rate of 0%. The median age in Mountain Plains is 62.6 years: 63.4 years for males, and 60.4 years for females. For every 100 females there are 95.3 males.

601
Total Population
377
Density (mi²)
40 7.13%
Growth

Mountain Plains Population

Mountain Plains Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Mountain Plains includes 89.32% White, 4.37% Asian, and smaller percentages for and multiracial populations.

Population by Race

White (89.32%)

Two or more races (6.31%)

Asian (4.37%)

Race
Population
Percentage (of total)
White36889.32%
Two or more races266.31%
Asian184.37%

Mountain Plains Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Mountain Plains' average per capita income is $68,947. Household income levels show a median of $166,641. The poverty rate stands at 0%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Households$166,641$321,188
Families$166,641$321,188
Married Families$166,641-
Non Families--

$68,947

Average Income

$166,641

Median Household Income

0%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)