Fairfax Flag

Fairfax

County:
Gregory County
County Seat:
No
Area (mi²):
0.303
State:
South Dakota

Fairfax is a town located in Gregory County, South Dakota. Fairfax has a 2025 population of 103. Fairfax is currently growing at a rate of 0.98% annually and its population has increased by 5.1% since the most recent census, which recorded a population of 98 in 2020.

The average household income in Fairfax is $68,741 with a poverty rate of 17.48%.The median age in Fairfax is 32.4 years: 30.3 years for males, and 46 years for females.

103
Total Population
340
Density (mi²)
1 0.98%
Growth

Fairfax Population

Fairfax Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Fairfax includes 98.6% White, and smaller percentages for Asian and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White14198.6%
Asian21.4%

Fairfax Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Fairfax's average per capita income is $36,250. Household income levels show a median of $66,875. The poverty rate stands at 17.48%.

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
Families$71,875$85,383
Married Families$71,719-
Households$66,875$68,741
Non Families$43,125$55,238

$36,250

Average Income

$66,875

Median Household Income

17.48%

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)