Thayer Flag

Thayer

County:
Sangamon County
County Seat:
No
Area (mi²):
0.61
State:
Illinois

Thayer is a village located in Sangamon County, Illinois. Thayer has a 2026 population of 608. Thayer is currently declining at a rate of -0.65% annually and its population has decreased by -3.65% since the most recent census, which recorded a population of 631 in 2020.

The median household income in Thayer is $62,083 with a poverty rate of 10.46%. The median age in Thayer is 46.4 years: 48.3 years for males, and 45.6 years for females. For every 100 females there are 79.4 males.

608
Total Population
996
Density (mi²)
-4 -0.65%
Growth

Thayer Population

Thayer Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026608-4-0.65%
2025612-4-0.65%
2024616-1-0.16%
2023617-3-0.48%
2022620-5-0.8%
2021625-6-0.95%
2020631-1-0.16%
2019658-6-0.9%
2018664-9-1.34%
2017673-5-0.74%
2016678-7-1.02%
2015685-4-0.58%
2014689-4-0.58%
2013693-2-0.29%
2012695-3-0.43%
201169850.72%
201069410.14%

Median Age

Overall: 46.4 years
Female: 45.6 years
Male: 48.3 years

Thayer Adults

There are 431 adults, (121 of whom are seniors) in Thayer.

Sex Ratio

Female: 296 (55.7%)
Male: 235 (44.3%)

Demographics

The racial composition of Thayer includes 95.48% White, and smaller percentages for Two or more races, Black or African American, Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White50795.48%
Two or more races112.07%
Black or African American71.32%
Asian61.13%
Race
Population ↓
Percentage (of total)
White50795.48%
Two or more races112.07%
Black or African American71.32%
Asian61.13%

Thayer Marital Status

Economics and Income Statistics

Thayer 's average per capita income is $44,087. Household income levels show a median of $62,083. The poverty rate stands at 10.46%.

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
Married Families$128,750-
Families$86,250$106,610
Households$62,083$82,348
Non Families$35,250$51,049

$44,087

Average Income

$62,083

Median Household Income

10.46%

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)