Spencer, SD demographics:
population, income, and more

Total population
103
-18.2% year-over-year change
Median household income
$67,188/yr
16.0% year-over-year change
Housing units
64
-13.5% year-over-year change

Spencer population

How many people live in Spencer

Spencer is home to 103 residents, according to the most recent Census data. Gender-wise, 55.3% of Spencer locals are male, and 44.7% are female.

Total population
103
-18.2% year-over-year change
Gender ratio
Male
55.3%
57
Female
44.7%
46
Value Percent YoY change
Male 57 55.3% -14.9%
Female 46 44.7% -22.0%
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 Spencer is 37, with the population distributed as follows: about 16.5% are children under 15, then 13.6% are in the 15 to 24 age group. Adults between 25 and 44 make up 22.3% of the population, while another 23.3% fall into the 45 to 64 bracket. Finally, around 24.3% are 65 or older.

Median age
36.8
Age breakdown
Under 15
16.5%
15 to 24
13.6%
25 to 44
22.3%
45 to 64
23.3%
Over 65
24.3%
Value Percent YoY change
Under 15 17 16.5% -41.4%
15 to 24 14 13.6% 40.0%
25 to 44 23 22.3% -8.0%
45 to 64 24 23.3% -14.3%
Over 65 25 24.3% -26.5%
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

There’s also a share of 1.9% that includes residents with two or more races.

Citizenship
U.S.-born citizens
100%
Non-U.S.-born citizens
0%
Non-citizens
0%
Value Percent YoY change
U.S.-born citizens 103 100% -17.6%
Racial breakdown
White
97.1%
Black or African American
0%
American Indian and Alaska Native
1%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
1.9%
Other
0%
Value Percent
White 100 97.1%
American Indian and Alaska Native 1 1%
Two or more races 2 1.9%

Households in Spencer

A peek inside Spencer households

Spencer has 57 households, with an average of 2 members in each. Of these, 59.6% are families, while the remaining 40.4% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
57
-3.4% year-over-year change
Average people per household
2
Non-family households
23
Family households
34
Value Percent YoY change
Non-family households 23 40.4% 27.8%
Family households 34 59.6% -17.1%
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 Spencer

The housing landscape of Spencer

Spencer's housing consists of 64 units, with 81.2% 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 7.8% of the housing landscape.

Housing units
64
-13.5% year-over-year change
Housing types
Value Percent
1 unit, detached 52 81.2%
3 or 4 units 2 3.1%
5 to 9 units 5 7.8%
Mobile home 5 7.8%
Homes built since 2020
3
% year-over-year change

The age of buildings in Spencer

In Spencer, the median construction year is 1993. About 25% of homes were built before the 1940s, with another 4.7% 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 16 25% -46.7%
Built between 1940 and 1949 3 4.7% -25.0%
Built between 1950 and 1959 4 6.2% -20.0%
Built between 1960 and 1969 6 9.4% N/A
Built between 1990 and 1999 10 15.6% -16.7%
Built between 2000 and 2009 22 34.4% -4.3%
Built in 2020 or later 3 4.7% N/A
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.

Spencer occupancy rates

Out of the 57 occupied housing units in Spencer, 84.2% are owner-occupied, while 15.8% are lived in by tenants. Meanwhile, 10.9% of all homes on the local market sit vacant.

Occupied housing units
57
-3.4% year-over-year change
Occupancy breakdown
Renter occupied
9
Owner occupied
48
Value Percent YoY
change
Renter occupied 9 15.8% -30.8%
Owner occupied 48 84.2% 4.3%
Unoccupied housing units
10.9%
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.

Spencer housing costs

Housing costs in Spencer come to a median of $800 per month, while tenants specifically pay a median gross rent of $440.

Median housing costs per month
$800/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.
Median gross rent in Spencer
$440/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Spencer

Spencer education at a glance

About 42.7% of the population in Spencer went to high school, while 8.5% pursued college studies. Another 24.4% earned an associate degree and 20.7% hold a bachelor’s. Meanwhile, 2.4% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 1 1.2% -50.0%
High school diploma 35 42.7% -5.4%
College diploma 7 8.5% -66.7%
Associate degree 20 24.4% 25.0%
Bachelor's degree 17 20.7% 21.4%
Graduate degree 2 2.4% 100.0%
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 Spencer

How much people earn in Spencer

The average annual household income in Spencer was $80,872 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +14.1% change from the previous year. At the same time, the median income stood at $67,188, reflecting a +16% shift over the same period.

Average household income in Spencer
$80,872/year
14.1% year-over-year change
Median household income in Spencer
$67,188/year
16.0% year-over-year change

Spencer income by age

In Spencer, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $66,875. Those with someone between 45 and 64 in charge, often well established professionally, earn $100,000 overall. Overall, 97% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $66,875 N/A
45 - 64 $100,000 34.5%
Above poverty level
98
Below poverty level
3
Value Percent YoY
change
Above poverty level 98 97% -20.3%
Below poverty level 3 3% N/A

Average renter income in Spencer

To get a better sense of what renters earn on average in Spencer, their median household income was $18,929 according to 2022 Census data. In addition, the rent-to-income ratio in the area, at 27.9%, shows what portion of their earnings goes toward housing expenses.

Renter median household income
$18,929
Rent-to-income ratio
27.9%
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 Spencer

Workforce and job types in Spencer

The job market in Spencer is powered by 60 working residents, spread across a range of industries and roles. 63.3% of the working population are employed in professional or administrative positions, while 36.7% are in hands-on or service-based jobs. Also, 6.7% run their own businesses, 73.3% are employed by private companies, and 11.7% work in the public sector.

Workforce demographics

Working population
60
20.0% year-over-year change
White collar
38
Blue collar
22
Value Percent YoY change
White collar 38 63.3% -2.6%
Blue collar 22 36.7% 100.0%
Employer type
Self employees
6.7%
Private companies
73.3%
Governmental workers
11.7%
Not for profit companies
8.3%
Value Percent YoY change
Self employees 4 6.7% 100.0%
Private companies 44 73.3% 25.7%
Governmental workers 7 11.7% -30.0%
Not for profit companies 5 8.3% 66.7%

Transportation in Spencer

How people get around in Spencer

Means of transportation
Value Percent YoY change
Car 52 86.7% 23.8%
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 Spencer by zipcode?

Zipcode Population Number of households Median income Average income
57374 272 108 $79,167 $101,363

Explore more communities

FAQs about Spencer demographics 

What is the total population of Spencer?

Spencer has a total population of 103 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 -18.2% compared to a year ago.

What is the gender ratio in Spencer?

The gender ratio in Spencer is as follows:
  • 55.3% males (57 residents)
  • 44.7% females (46 residents)

What is the median age in Spencer?

The median age in Spencer is 36.8.

What is the age distribution of the population in Spencer?

The age distribution in Spencer is as follows:
  • Under 15: 16.5% (17 residents)
  • Ages 15-24: 13.6% (14 residents)
  • Ages 25-44: 22.3% (23 residents)
  • Ages 45-64: 23.3% (24 residents)
  • Over 65: 24.3% (25 residents)

What is the racial and ethnic makeup of Spencer?

The racial and ethnic makeup of Spencer is as follows:
  • White: 97.1% (100 residents)
  • Black or African American: 0% (0 residents)
  • American Indian and Alaska Native: 1% (1 residents)
  • Asian: 0% (0 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 1.9% (2 residents)
  • Other: 0% (0 residents)

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

U.S.-born citizens represent 100% of the population in Spencer.

How many housing units are there in Spencer?

There are 64 housing units in Spencer, reflecting a -13.5% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

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

Spencer has a total of 57 households, with an average of 2 people in each.

What is the median household income in Spencer?

Spencer has a median household income of $67,188, representing a +16.0% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Spencer?

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

Job types:
  • White-collar workers: 63.3% (38 residents)
  • Blue-collar workers: 36.7% (22 residents)

Places of employment:
  • Self-employed: 6.7% (4 residents)
  • Private companies: 73.3% (44 residents)
  • Governmental workers: 11.7% (7 residents)
  • Not-for-profit companies: 8.3% (5 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