Seymour, IL demographics:
population, income, and more

Total population
270
-18.9% year-over-year change
Median household income
$36,063/yr
% year-over-year change
Housing units
137
3.8% year-over-year change

Seymour population

How many people live in Seymour

Seymour is home to 270 residents, according to the most recent Census data. Gender-wise, 31.5% of Seymour locals are male, and 68.5% are female.

Total population
270
-18.9% year-over-year change
Gender ratio
Male
31.5%
85
Female
68.5%
185
Value Percent YoY change
Male 85 31.5% -34.6%
Female 185 68.5% -8.9%
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 Seymour is 30, with the population distributed as follows: about 33.3% are children under 15, then 10.7% are in the 15 to 24 age group. Adults between 25 and 44 make up 29.6% of the population, while another 9.3% fall into the 45 to 64 bracket. Finally, around 17% are 65 or older.

Median age
29.9
Age breakdown
Under 15
33.3%
15 to 24
10.7%
25 to 44
29.6%
45 to 64
9.3%
Over 65
17%
Value Percent YoY change
Under 15 90 33.3% -21.7%
15 to 24 29 10.7% -38.3%
25 to 44 80 29.6% -2.4%
45 to 64 25 9.3% -62.1%
Over 65 46 17% 100.0%
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

Citizenship
U.S.-born citizens
100%
Non-U.S.-born citizens
0%
Non-citizens
0%
Value Percent YoY change
U.S.-born citizens 270 100% -18.9%
Racial breakdown
White
100%
Black or African American
0%
American Indian and Alaska Native
0%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
0%
Other
0%
Value Percent
White 270 100%

Households in Seymour

A peek inside Seymour households

Seymour has 105 households, with an average of 3 members in each. Of these, 67.6% are families, while the remaining 32.4% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
105
6.1% year-over-year change
Average people per household
3
Non-family households
34
Family households
71
Value Percent YoY change
Non-family households 34 32.4% N/A
Family households 71 67.6% -28.3%
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 Seymour

The housing landscape of Seymour

Seymour's housing consists of 137 units, with 77.4% 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 22.6% of the housing landscape.

Housing units
137
3.8% year-over-year change
Housing types
Value Percent
1 unit, detached 106 77.4%
Mobile home 31 22.6%
Homes built since 2020
0
% year-over-year change

The age of buildings in Seymour

In Seymour, the median construction year is 1959. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built between 1950 and 1959 73 53.3% 21.7%
Built between 1970 and 1979 11 8% -52.2%
Built between 1980 and 1989 38 27.7% 123.5%
Built between 1990 and 1999 15 11% -11.8%
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.

Seymour occupancy rates

Out of the 105 occupied housing units in Seymour, 72.4% are owner-occupied, while 27.6% are lived in by tenants. Meanwhile, 23.4% of all homes on the local market sit vacant.

Occupied housing units
105
6.1% year-over-year change
Occupancy breakdown
Renter occupied
29
Owner occupied
76
Value Percent YoY
change
Renter occupied 29 27.6% -27.5%
Owner occupied 76 72.4% 28.8%
Unoccupied housing units
23.4%
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.

Seymour housing costs

Median housing costs per month
$1,040/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 Seymour

Seymour education at a glance

About 42.6% of the population in Seymour went to high school, while 27.8% pursued college studies. Another 20.4% earned an associate degree and 9.3% hold a bachelor’s.

Education level
Value Percent YoY change
High school diploma 69 42.6% 3.0%
College diploma 45 27.8% -22.4%
Associate degree 33 20.4% -41.1%
Bachelor's degree 15 9.3% -25.0%
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 Seymour

How much people earn in Seymour

The average annual household income in Seymour was $58,965 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -35.1% change from the previous year.

Average household income in Seymour
$58,965/year
-35.1% year-over-year change
Median household income in Seymour
$36,063/year
% year-over-year change

Seymour income by age

Overall, 82.6% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Over 65 $31,964 N/A
Above poverty level
223
Below poverty level
47
Value Percent YoY
change
Above poverty level 223 82.6% -20.9%
Below poverty level 47 17.4% -7.8%

Employment in Seymour

Workforce and job types in Seymour

The job market in Seymour is powered by 74 working residents, spread across a range of industries and roles. 64.9% of the working population are employed in professional or administrative positions, while 35.1% are in hands-on or service-based jobs.

Workforce demographics

Working population
74
-45.6% year-over-year change
White collar
48
Blue collar
26
Value Percent YoY change
White collar 48 64.9% -51.0%
Blue collar 26 35.1% -31.6%
Employer type
Self employees
0%
Private companies
59.5%
Governmental workers
20.3%
Not for profit companies
20.3%
Value Percent YoY change
Private companies 44 59.5% -55.1%
Governmental workers 15 20.3% -6.2%
Not for profit companies 15 20.3% 0.0%

Transportation in Seymour

How people get around in Seymour

Means of transportation
Value Percent YoY change
Car 74 100% -45.6%
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.

Explore more communities

FAQs about Seymour demographics 

What is the total population of Seymour?

Seymour has a total population of 270 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 -18.9% compared to a year ago.

What is the gender ratio in Seymour?

The gender ratio in Seymour is as follows:
  • 31.5% males (85 residents)
  • 68.5% females (185 residents)

What is the median age in Seymour?

The median age in Seymour is 29.9.

What is the age distribution of the population in Seymour?

The age distribution in Seymour is as follows:
  • Under 15: 33.3% (90 residents)
  • Ages 15-24: 10.7% (29 residents)
  • Ages 25-44: 29.6% (80 residents)
  • Ages 45-64: 9.3% (25 residents)
  • Over 65: 17% (46 residents)

What is the racial and ethnic makeup of Seymour?

The racial and ethnic makeup of Seymour is as follows:
  • White: 100% (270 residents)
  • Black or African American: 0% (0 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 0% (0 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 0% (0 residents)
  • Other: 0% (0 residents)

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

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

How many housing units are there in Seymour?

There are 137 housing units in Seymour, reflecting a +3.8% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

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

Seymour has a total of 105 households, with an average of 3 people in each.

What is the median household income in Seymour?

Seymour has a median household income of $36,063, representing a % shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Seymour?

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

Job types:
  • White-collar workers: 64.9% (48 residents)
  • Blue-collar workers: 35.1% (26 residents)

Places of employment:
  • Self-employed: 0% (0 residents)
  • Private companies: 59.5% (44 residents)
  • Governmental workers: 20.3% (15 residents)
  • Not-for-profit companies: 20.3% (15 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