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Thayer, IL
Key Indicators
A quick look at key numbers
Population
531
Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates
Median Age
46.4
years ∙ half population younger than 46.4, half older
Diversity Index
8.7%
chance two random people differ in race and ethnicity
Nativity
1.9%
foreign-born population
Geographic Context
Location, size, and surroundings
About
Thayer is a village within Sangamon County, Illinois, United States.
Co-ordinates
DEC39.540378° N, 89.758042° W
DMS39° 32′ 25.36″ N, 89° 45′ 28.95″ W
Population Density & area
870.5/sq mi
(335.9/km²)
Demographics & Living
Who lives here, how households are formed, and community composition
Population Composition
Key characteristics of the population
Sex Distribution
44.3%
male
Male
44.3%
Female
55.7%
males per 100 females
Thayer
79.4
Sangamon County
93.3
Illinois
97.7
Nativity
1.9%
foreign-born population
% Foreign-born
Thayer
1.9%
Sangamon County
3.6%
Illinois
14.7%
Age Distribution
How the population is spread across age groups
Median Age
46.4
years ∙ half population younger than 46.4, half older
Dependency ratio
71.3
dependents per 100 working-age adults
Thayer
71.3
Sangamon County
70.3
Illinois
63.5
AGE DISTRIBUTION
Distribution of age group
Median age
| Thayer | Sangamon County | Illinois | |
|---|---|---|---|
| Age Group | |||
| Children (Under 18) | 18.8% | 21.9% | 21.8% |
| Working age (18-64) | 58.4% | 58.7% | 61.2% |
| Senior (65+) | 22.8% | 19.4% | 17% |
| Dependency ratio | |||
| Total dependency ratio | 71.3 | 70.3 | 63.5 |
| Child dependency ratio | 32.3 | 37.3 | 35.7 |
| Old-age dependency ratio | 39 | 33.1 | 27.8 |
Racial & Ethnic Composition
Racial and ethnic makeup and how it compares
Race & Ethnicity
Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.
Diversity Index
8.7%
chance two random people differ in race and ethnicity
Thayer
8.7%
Sangamon County
38.4%
Illinois
60.5%
Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.
RACIAL & ETHNIC COMPOSITION
Race & Ethnicity
Percentage of Thayer population
| Thayer | Sangamon County | Illinois | |
|---|---|---|---|
| Hispanic or Latino | 0% | 2.9% | 18.8% |
| Mexican | 0% | 1.3% | 14.4% |
| Puerto Rican | 0% | 0.5% | 1.6% |
| Cuban | 0% | 0.1% | 0.3% |
| Other Hispanic / Latino | 0% | 1.1% | 2.5% |
| Not Hispanic or Latino | 100% | 97.1% | 81.2% |
| One race | 97.9% | 92.8% | 77.8% |
| White | 95.5% | 77.3% | 58.1% |
| Black or African American | 1.3% | 12.5% | 13.3% |
| American Indian and Alaska Native | 0% | 0.1% | 0.1% |
| Asian | 1.1% | 2.3% | 5.9% |
| Native Hawaiian and Other Pacific Islander | 0% | 0% | 0% |
| Some Other Race | 0% | 0.5% | 0.4% |
| Two or more races (Multiracial) | 2.1% | 4.3% | 3.4% |
Household & Families Composition
Household size, type, and family structure
Household structure
56%
family
Family
56%
Non family
44%
% family households
Thayer
56%
Sangamon County
57.3%
Illinois
62.2%
Average household size
2.11
persons per household
Household & Family COMPOSITION
Households
Percentage of Thayer population
| Thayer | Sangamon County | Illinois | |
|---|---|---|---|
| Total households | 252 | 84,762 | 5,036,449 |
| Average houshold size | 2.11 | 2.25 | 2.46 |
| Family households | 141 | 48,532 | 3,130,978 |
| Average family size | 2.77 | 2.97 | 3.14 |
| Married couple family | 108 | 35,406 | 2,282,435 |
| Other families | 33 | 13,126 | 848,543 |
| Male householder | 9 | 3,509 | 248,521 |
| Female householder | 24 | 9,617 | 600,022 |
| Non-family households | 111 | 36,230 | 1,905,471 |
| One-person households | 96 | 30,883 | 1,569,881 |
| Male householder | 39 | 13,475 | 712,191 |
| Senior (65+) living alone | 7 | 3,916 | 210,051 |
| Female householder | 57 | 17,408 | 857,690 |
| Senior (65+) living alone | 44 | 8,691 | 417,870 |
| Other living arrangements | 15 | 5,347 | 335,590 |
Housing Profile
Housing stock, ownership, rentals, and cost burdens
Total housing units
289
housing units
Thayer
289
Sangamon County
93,382
Illinois
5,457,452
Occupancy status
87.2%
occupied
Occupied
87.2%
Vacant
12.8%
vacancy rate
Thayer
12.8%
Sangamon County
9.2%
Illinois
7.7%
Housing Characteristics
How the housing supply is structured and used
Types of Housing unit
97.9%
Single family houses
Median Year Built
1963
Half of houses were built before 1963, and half after.
Note: Median year built reflects occupied units only; distribution includes all units.
Housing Characteristics
Units, rooms & bedrooms
Physical characteristics of housing units
| Thayer | Sangamon County | Illinois | |
|---|---|---|---|
| Rooms per unit | |||
| Median rooms | 6.1 | 5.6 | 5.6 |
| 1–3 rooms | 4.1% | 11.5% | 14.6% |
| 4–6 rooms | 53% | 53.3% | 50.9% |
| 7+ rooms | 42.9% | 35.2% | 34.6% |
| Bedrooms | |||
| No bedroom / studio | 0% | 0.9% | 3.1% |
| 1 bedroom | 1% | 9.5% | 11.5% |
| 2 bedrooms | 31.1% | 28.8% | 27.7% |
| 3 bedrooms | 49.1% | 41.2% | 35.8% |
| 4+ bedrooms | 18.6% | 19.5% | 21.7% |
| At a glance | |||
| Median year built | 1963 | 1974 | 1971 |
| Total housing units | 289 | 93,382 | 5,457,452 |
Occupancy Profile
Who is inside and how they use it
Homeownership
86.9%
owners
Renter-occupied
13.1%
Owner-occupied
86.9%
homeownership rate
Thayer
86.9%
Sangamon County
71.3%
Illinois
67.1%
Average household size
2.07
Owner-occupied
2.36
Renter-occupied
owner-occupied average size
Thayer
2.07
Sangamon County
2.35
Illinois
2.62
Housing Characteristics
Occupied unit characteristics
Tenure, crowding, and utilities
| Thayer | Sangamon County | Illinois | |
|---|---|---|---|
| Total occupied units | 252 | 84,762 | 5,036,449 |
| Year moved in | |||
| 2020 or later | 11.9% | 23.5% | 23.3% |
| 2010 to 2019 | 37.7% | 38.8% | 38.1% |
| 2000 to 2009 | 18.7% | 18.2% | 17.3% |
| 1999 or earlier | 31.8% | 19.4% | 21.3% |
| Occupants per room | |||
| 1.00 or fewer | 98% | 98.5% | 97.5% |
| 1.01 to 1.50 | 2% | 1.2% | 1.6% |
| 1.51 or more | 0% | 0.3% | 0.8% |
| Vehicles availability | |||
| No vehicles | 2.4% | 7.6% | 11% |
| 1 vehicle | 36.1% | 36.8% | 35.7% |
| 2 vehicles | 40.9% | 38% | 35.1% |
| 3 or more vehicles | 20.6% | 17.6% | 18.3% |
| House heating fuel used | |||
| Gas | 88.9% | 77.7% | 79.5% |
| Electricity | 11.1% | 21.3% | 18.6% |
| Solar | 0% | 0% | 0.1% |
| Fuel oil, kerosene etc | 0% | 0.1% | 0.1% |
| All other fuels | 0% | 0.5% | 0.8% |
| No fuel used | 0% | 0.3% | 0.8% |
| Selected characteristics | |||
| Lacking complete plumbing | 0% | 0.2% | 0.3% |
| Lacking complete kitchen | 0% | 0.5% | 0.8% |
| No telephone service available | 0.8% | 0.9% | 0.8% |
Housing Value
What owner-occupied units are worth
Median home value
$97,100
owner-occupied units
Housing Cost Burden
13.8%
of homeowners with a mortgage are cost-burdened
Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.
Financial characteristics
Property value and housing costs
Tenure, crowding, and utilities
| Thayer | Sangamon County | Illinois | |
|---|---|---|---|
| Property value | |||
| Median Value | $97,100 | $176,300 | $263,300 |
| Under $100,000 | 52.5% | 21.2% | 13.7% |
| $100,000 - $200,000 | 34.7% | 35.2% | 21.5% |
| $200,000 - $300,000 | 9.6% | 22.7% | 22.3% |
| $300,000 - $500,000 | 2.3% | 16.1% | 27.7% |
| $500,000 - $1,000,000 | 0.9% | 4.1% | 12.1% |
| $1,000,000 and more | 0% | 0.7% | 2.7% |
| Owner-occupied households | |||
| With a mortgage | 56.2% | 59.4% | 60.8% |
| Without a mortgage | 43.8% | 40.6% | 39.2% |
| Median monthly owner costs | |||
| With a mortgage | $979 | $1,494 | $1,987 |
| Without a mortgage | $460 | $651 | $792 |
| Gross rent | |||
| Median rent | $968 | $983 | $1,274 |
Education Profile
How educated is the community and how education pays off
Adults with a college degree
10.3%
of adults 25+ with a bachelor's degree or higher
Thayer
10.3%
Sangamon County
36.6%
Illinois
37.8%
Adults without a high school diploma
9%
of adults (25+) without a high school diploma
Thayer
9%
Sangamon County
5.8%
Illinois
9.6%
School Enrollment
Who is enrolled in school and at what level
School enrollment
93
population (age 3+) enrolled in school
College-going rate (18-24 yr olds)
14.6%
of 18-24-year-olds in college or graduate school
Enrollment & school type
Enrollment levels, college-going rate, and public vs private school split
Population 3+ currently enrolled in a school
| Thayer | Sangamon County | Illinois | |
|---|---|---|---|
| Total enrolled (age 3+) | 93 | 43,260 | 3,051,569 |
| Nursery / preschool | 8.6% | 7% | 6.3% |
| K–12 | 79.6% | 72.8% | 67.3% |
| Kindergarten | 0% | 5.1% | 4.9% |
| Elementary: Grades 1–4 | 19.4% | 21.8% | 19.5% |
| Elementary: Grades 5–8 | 30.1% | 22.4% | 20.8% |
| High School: Grades 9–12 | 30.1% | 23.5% | 22.1% |
| College or graduate school | 11.8% | 20.1% | 26.4% |
| College, undergraduate | 6.5% | 14.8% | 19.8% |
| Graduate, professional school | 5.4% | 5.4% | 6.6% |
| College-going rate · 18-24 yr olds | 14.6% | 32% | 41.4% |
| School type | |||
| Public school | 91.4% | 79.9% | 80.5% |
| Private school | 8.6% | 20.1% | 19.5% |
Education Attainment by Level & Gender
What is the highest level of education completed among adults
Education attainment
390
population 25 years and over
Attainment by gender
Male vs Female
Adults (25+) · Share within each education level
Educational Attainment Overview
Distribution and key education attainment rates for adults (25+)
Highest credential completed · adults 25+
| Thayer | Sangamon County | Illinois | |
|---|---|---|---|
| Population (25+) | 390 | 136,639 | 8,767,004 |
| Less than 9th grade | 0.5% | 1.5% | 4.6% |
| 9th–12th, no diploma | 8.5% | 4.3% | 5% |
| High school diploma or GED | 46.9% | 28.1% | 25.1% |
| Some college, no degree | 25.1% | 20.5% | 19.2% |
| Associate's degree | 8.7% | 8.9% | 8.3% |
| Bachelor's degree or higher | 10.3% | 36.6% | 37.8% |
| Bachelor's degree | 6.7% | 21.8% | 22.6% |
| Graduate or professional | 3.6% | 14.8% | 15.3% |
| High School or higher | 91% | 94.1% | 90.5% |
Earnings by education level
percentage as applicable
Median Earnings
$44,087
Median earnings for adults 25+, by level
Poverty Rate
2.5%
for ages 25+, with bachelors degree or higher
Outcomes by Education Level
Earnings and poverty rates across education levels (25+)
Adults 25+
| Thayer | Sangamon County | Illinois | |
|---|---|---|---|
| Median earnings | |||
| Population 25+, with earnings | $44,087 | $54,994 | $55,582 |
| Less than high school graduate | $44,167 | $30,897 | $34,655 |
| High school graduate (includes equivalency) | $38,750 | $39,258 | $40,965 |
| Some college or associate's degree | $53,542 | $49,027 | $47,813 |
| Bachelor's degree | $41,250 | $66,662 | $73,326 |
| Graduate or professional degree | $102,500 | $83,598 | $91,623 |
| Poverty rates | |||
| Less than high school graduate | 25.7% | 34.5% | 21.6% |
| High school graduate (includes equivalency) | 3.3% | 17.4% | 14.4% |
| Some college or associate's degree | 12.1% | 9.2% | 9.9% |
| Bachelor's degree or higher | 2.5% | 3.8% | 4.5% |
About Neilsberg Research
Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.
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