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.

Demographics

The racial composition of Fairfax includes 98.6% White, and smaller percentages for Asian, Black or African American, Native American, Native Hawaiian or Pacific Islander, other race, Two or more races and multiracial populations.

Population by Race

White

Asian

Black or African American

Native American

Native Hawaiian or Pacific Islander

Other race

Two or more races

Race	Population	Percentage (of total)
White	141	98.6%
Asian	2	1.4%
Black or African American	0	0%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%
Two or more races	0	0%

Fairfax Marital Status

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