Plainfield Flag

Plainfield

County:
Brule County
County Seat:
No
Area (mi²):
35.472
State:
South Dakota

Plainfield is located in Brule County, South Dakota. Plainfield has a 2025 population of 31 . Plainfield is currently declining at a rate of -3.13% annually and its population has decreased by -6.06% since the most recent census, which recorded a population of 33 in 2020.

The average household income in Plainfield is $71,200 with a poverty rate of 0%. The median age in Plainfield is 45.5 years: 38.5 years for males, and 45.5 years for females. For every 100 females there are 146.7 males.

31
Total Population
1
Density (mi²)
-1 -3.13%
Growth

Plainfield Population

Plainfield Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Plainfield includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

White (100%)

Race
Population
Percentage (of total)
White37100%

Plainfield Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Plainfield's average per capita income is $0. Household income levels show a median of $0. 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-$71,200
Families-$71,200
Married Families--
Non Families--

$0

Average Income

$0

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)