Thayer, Illinois Population 2021

637
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Thayer is a city located in Sangamon County Illinois. With a 2020 population of 637, it is the 788th largest city in Illinois and the 12269th largest city in the United States . Thayer is currently declining at a rate of -1.39% annually and its population has decreased by -8.08% since the most recent census, which recorded a population of 693 in 2010. Thayer reached it's highest population of in . Spanning over 1 miles, Thayer has a population density of 1,044 people per square mile.

The average household income in Thayer is $67,763 with a poverty rate of 11.75%. The median rental costs in recent years comes to $718 per month, and the median house value is $72,400. The median age in Thayer is 34.1 years, 32.7 years for males, and 34.4 years for females.

Thayer Demographics

According to the most recent ACS, the racial composition of Thayerwas:

  • White: 98.09%
  • Two or more races: 1.91%
  • Black or African American: 0.00%
  • Native American: 0.00%
  • Asian: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
  • Other race: 0.00%
The current population of Thayer, Illinois is 637 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 655.The last official US Census in 2010 recorded the population at 693.

Thayer, Illinois Population 2021

Population by Race

Race Population Percentage
White77198.09%
Two or More Races151.91%
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Thayer Population by Race

Thayer Population Pyramid $2021

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Thayer Median Age

34.1


Total

32.7


Male

34.4


Female

Thayer Adults

There are 599 adults, (127 of whom are seniors) in Thayer.

Thayer Age Dependency

66.5

Age Dependency Ratio

26.9

Old Age Dependency Ratio

39.6

Child Dependency Ratio

Thayer Sex Ratio

Female

386

49.11%

Male

400

50.89%

Thayer Population by Age

Thayer Renter vs Owner Occupied by Household Type

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Thayer Household Types

Type Owner Renter
Female58.3%41.7%
Male83.3%16.7%
All89.4%10.6%
Non Family89.4%10.6%
Married98%2%

89.4%

Rate of Home Ownership

Thayer Households and Families

Type Count Average Size Owned
All3202.4689.4
Married1473.1498
Non Family1131.2489.4
Female362.9258.3
Male243.2983.3

2.96

Average Family Size

2.46

Average Household Size

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Thayer Households by Type

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Education Attained Count Percentage
Less Than 9th Grade0.00%
9th to 12th Grade112.03%
High School Graduate23042.44%
Some College16129.70%
Associates Degree407.38%
Bachelors Degree8716.05%
Graduate Degree132.40%
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Thayer Educational Attainment by Sex (over 25)

Thayer Educational Attainment by Race

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The highest rate of high school graduation is among 2+ races people with a rate of 100.00%.

The highest rate of bachelors degrees is among white people with a rate of 18.52%.

Thayer Educational Attainment by Race

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Name Average Male Female
Overall$32,117$41,250$30,368
Less Than 9th Grade$$$
High School Graduate$30,234$38,375$28,333
Some College$32,100$35,625$31,071
Bachelors Degree$46,250$71,250$41,250
Graduate Degree$$$

$32,117

Average Earnings

$41,250

Average Male

$30,368

Average Female

Thayer Earnings by Educational Attainment

Thayer Language by Age

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Thayer Language

98.92% of Thayer residents speak only English, while 1.08% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.08% of the population.

Thayer Language

Thayer Poverty by Race

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11.75%

Overall Poverty Rate

6.75%

Male Poverty Rate

16.97%

Female Poverty Rate

Poverty in Thayer

The race most likely to be in poverty in Thayer is White, with 11.98% below the poverty level.

The race least likely to be in poverty in Thayer is White, with 11.98% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.37%. Among those working part-time, it was 14.46%, and for those that did not work, the poverty rate was 9.94%.

Thayer Poverty

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Name Poverty
High School11.74%
Some College5.97%
Bachelors or Greater4.00%
Less Than 9th Grade0.00%

Thayer Poverty Rate by Education

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Rate Poverty
Female Unemployed100.00%
Male Unemployed66.67%
Female Employed11.16%
Male Employed1.75%

Thayer Poverty Rate by Employment Status and Sex

Thayer Income by Household Type

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Name Median Mean
Households$61,071$67,763
Families$64,250$71,863
Married Families$71,528-
Non Families$37,321$50,196
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Income by Household Type

Thayer Marital Status

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Marriage Rates

45.2%

Overall Marriage Rate

43.3%

Male Marriage Rate

47.3%

Female Marriage Rate

Thayer Married by Age and Sex

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Thayer Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 35-44.

Thayer Marital Status by Race

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Thayer Marital Status

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71

Number of Veterans

62

Male Veterans

9

Female Veterans

War Veterans
Second Gulf War17
Vietnam16
First Gulf War4
World War II2
Korea2

Thayer Veterans by War

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Age Group Veterans
75+20
18 to 3417
65 to 7414
55 to 6411
35 to 549

Thayer Veterans by Age

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Thayer Veterans by Race

Thayer Veterans by Education

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0.00%

Veteran Poverty Rate

19.72%

Veteran Disability Rate

Thayer Veterans by Education

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72.2%

Labor Force Participation

69.2%

Employment Rate

3.5%

Unemployment Rate

Thayer Employment by Age

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Thayer Employment by Race

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Thayer Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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87.66%

Born in Thayer

100.00%

Native Born

0.00%

Foreign Born

0.00%

Non Citizen

0.00%

Naturalized

Place of Birth

100.00% of Thayer residents were born in the United States, with 87.66% having been born in Illinois. 0.00% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Thayer Place of Birth

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
2021637-9-1.39%
2020646-9-1.37%
2019655-9-1.36%
2018664-6-0.90%
2017670-8-1.18%
2016678-5-0.73%
2015683-6-0.87%
2014689-2-0.29%
2013691-4-0.58%
2012695-1-0.14%
201169620.29%
20106940.00%

Thayer Population by Year