Fairfax, SD demographics:
population, income, and more

Total population
119
-16.8% year-over-year change
Median household income
$72,656/yr
8.6% year-over-year change
Housing units
72
-21.7% year-over-year change

Fairfax population

How many people live in Fairfax

Fairfax is home to 119 residents, according to the most recent Census data. Gender-wise, 36.1% of Fairfax locals are male, and 63.9% are female.

Total population
119
-16.8% year-over-year change
Gender ratio
Male
36.1%
43
Female
63.9%
76
Value Percent YoY change
Male 43 36.1% -27.1%
Female 76 63.9% -9.5%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Fairfax is 48, with the population distributed as follows: about 21% are children under 15, then 10.9% are in the 15 to 24 age group. Adults between 25 and 44 make up 16.8% of the population, while another 33.6% fall into the 45 to 64 bracket. Finally, around 17.6% are 65 or older.

Median age
48.2
Age breakdown
Under 15
21%
15 to 24
10.9%
25 to 44
16.8%
45 to 64
33.6%
Over 65
17.6%
Value Percent YoY change
Under 15 25 21% -32.4%
15 to 24 13 10.9% -13.3%
25 to 44 20 16.8% -39.4%
45 to 64 40 33.6% 0.0%
Over 65 21 17.6% 16.7%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

At the same time, 5.9% of residents are non-citizens. There’s also a share of 2.5% that includes residents with two or more races.

Citizenship
U.S.-born citizens
94.1%
Non-U.S.-born citizens
0%
Non-citizens
5.9%
Value Percent YoY change
U.S.-born citizens 112 94.1% -20.6%
Non-citizens 7 5.9% 250.0%
Racial breakdown
White
91.6%
Black or African American
0%
American Indian and Alaska Native
0%
Asian
5.9%
Native Hawaiian and other Pacific Islander
0%
Two or more races
2.5%
Other
0%
Value Percent
White 109 91.6%
Asian 7 5.9%
Two or more races 3 2.5%

Households in Fairfax

A peek inside Fairfax households

Fairfax has 59 households, with an average of 2 members in each. Of these, 37.3% are families, while the remaining 62.7% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
59
-14.5% year-over-year change
Average people per household
2
Non-family households
37
Family households
22
Value Percent YoY change
Non-family households 37 62.7% -5.1%
Family households 22 37.3% -26.7%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Fairfax

The housing landscape of Fairfax

Fairfax's housing consists of 72 units, with 56.9% being detached single-family homes ideal for those wanting space. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 38.9% of the housing landscape.

Housing units
72
-21.7% year-over-year change
Housing types
Value Percent
1 unit, detached 41 56.9%
5 to 9 units 3 4.2%
Mobile home 28 38.9%
Homes built since 2020
0
% year-over-year change

The age of buildings in Fairfax

In Fairfax, the median construction year is 1979. About 16.7% of homes were built before the 1940s, with another 5.6% going up by 1949. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 12 16.7% -58.6%
Built between 1940 and 1949 4 5.6% -20.0%
Built between 1960 and 1969 8 11.1% 166.7%
Built between 1970 and 1979 14 19.4% -6.7%
Built between 1980 and 1989 11 15.3% -42.1%
Built between 1990 and 1999 4 5.6% 300.0%
Built between 2000 and 2009 2 2.8% -50.0%
Built between 2010 and 2019 17 23.6% 6.2%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Fairfax occupancy rates

Out of the 59 occupied housing units in Fairfax, 83% are owner-occupied, while 17% are lived in by tenants. Meanwhile, 18.1% of all homes on the local market sit vacant.

Occupied housing units
59
-14.5% year-over-year change
Occupancy breakdown
Renter occupied
10
Owner occupied
49
Value Percent YoY
change
Renter occupied 10 17% -9.1%
Owner occupied 49 83% -15.5%
Unoccupied housing units
18.1%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Fairfax housing costs

Median housing costs per month
$561/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.

Education in Fairfax

Fairfax education at a glance

About 43.7% of the population in Fairfax went to high school, while 10.3% pursued college studies. Another 23% earned an associate degree and 9.2% hold a bachelor’s. Meanwhile, 9.2% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 4 4.6% 100.0%
High school diploma 38 43.7% -19.1%
College diploma 9 10.3% -43.8%
Associate degree 20 23% -9.1%
Bachelor's degree 8 9.2% -20.0%
Graduate degree 8 9.2% 166.7%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Fairfax

How much people earn in Fairfax

The average annual household income in Fairfax was $72,420 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +5.4% change from the previous year. At the same time, the median income stood at $72,656, reflecting a +8.6% shift over the same period.

Average household income in Fairfax
$72,420/year
5.3% year-over-year change
Median household income in Fairfax
$72,656/year
8.6% year-over-year change

Fairfax income by age

Those with someone between 45 and 64 in charge, often well established professionally, earn $74,167 overall. Overall, 93.9% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
45 - 64 $74,167 13.0%
Above poverty level
107
Below poverty level
7
Value Percent YoY
change
Above poverty level 107 93.9% -1.8%
Below poverty level 7 6.1% -68.2%

Average renter income in Fairfax

To get a better sense of what renters earn on average in Fairfax, their median household income was $66,250 according to 2022 Census data.

Renter median household income
$66,250
Rent-to-income ratio
0%
Understanding the rent-to-income ratio can help renters gauge if local housing costs align with their earnings. A ratio under 30% usually signals affordability, while exceeding this mark means rent is taking a larger-than-recommended bite out of income. That could make it harder for you to cover other costs like transportation, healthcare, or child care.

Employment in Fairfax

Workforce and job types in Fairfax

The job market in Fairfax is powered by 70 working residents, spread across a range of industries and roles. 70% of the working population are employed in professional or administrative positions, while 30% are in hands-on or service-based jobs. Also, 18.6% run their own businesses, 58.6% are employed by private companies, and 12.9% work in the public sector.

Workforce demographics

Working population
70
-16.7% year-over-year change
White collar
49
Blue collar
21
Value Percent YoY change
White collar 49 70% -24.6%
Blue collar 21 30% 10.5%
Employer type
Self employees
18.6%
Private companies
58.6%
Governmental workers
12.9%
Not for profit companies
10%
Value Percent YoY change
Self employees 13 18.6% -40.9%
Private companies 41 58.6% 2.5%
Governmental workers 9 12.9% -35.7%
Not for profit companies 7 10% -12.5%

Transportation in Fairfax

How people get around in Fairfax

Means of transportation
Value Percent YoY change
Car 66 94.3% -9.6%
Bicycle 2 2.9% N/A
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Fairfax by zipcode?

Zipcode Population Number of households Median income Average income
57335 303 141 $92,813 $98,750

Explore more communities

FAQs about Fairfax demographics 

What is the total population of Fairfax?

Fairfax has a total population of 119 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by -16.8% compared to a year ago.

What is the gender ratio in Fairfax?

The gender ratio in Fairfax is as follows:
  • 36.1% males (43 residents)
  • 63.9% females (76 residents)

What is the median age in Fairfax?

The median age in Fairfax is 48.2.

What is the age distribution of the population in Fairfax?

The age distribution in Fairfax is as follows:
  • Under 15: 21% (25 residents)
  • Ages 15-24: 10.9% (13 residents)
  • Ages 25-44: 16.8% (20 residents)
  • Ages 45-64: 33.6% (40 residents)
  • Over 65: 17.6% (21 residents)

What is the racial and ethnic makeup of Fairfax?

The racial and ethnic makeup of Fairfax is as follows:
  • White: 91.6% (109 residents)
  • Black or African American: 0% (0 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 5.9% (7 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 2.5% (3 residents)
  • Other: 0% (0 residents)

What percentage of the population in Fairfax are U.S.-born citizens?

U.S.-born citizens represent 94.1% of the population in Fairfax.

How many housing units are there in Fairfax?

There are 72 housing units in Fairfax, reflecting a -21.7% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Fairfax and what is the average household size?

Fairfax has a total of 59 households, with an average of 2 people in each.

What is the median household income in Fairfax?

Fairfax has a median household income of $72,656, representing a +8.6% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Fairfax?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 70% (49 residents)
  • Blue-collar workers: 30% (21 residents)

Places of employment:
  • Self-employed: 18.6% (13 residents)
  • Private companies: 58.6% (41 residents)
  • Governmental workers: 12.9% (9 residents)
  • Not-for-profit companies: 10% (7 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025