Thayer, IL
Population 638 · Illinois
About Thayer, IL
Thayer is a small community in Illinois with a population of 638 residents. The median household income is $63,125 per year, which is near the national average. The median age in Thayer is 43.6 years.
Housing in Thayer has a median home value of $87,300 and median monthly rent of $919. Of the 347 total housing units, the majority are owner-occupied, with 266 owner-occupied and 31 renter-occupied units.
The unemployment rate in Thayer is 5.1% and the poverty rate is 9.4%. 11.2% of residents hold a bachelor's degree or higher. The average commute time is 29.9 minutes.
Cost of Living in Thayer, IL
Compared to national averages, Thayer has a median household income of $63,125 (16% below the national median of $75,149). Home values average $87,300, which is 64% below the national median. Monthly rent at $919 is 21% below the US average of $1,163. Within Illinois, Thayer's income is 16% below the state average of $75,072, and home values are 47% below the state median of $165,779.
Why Live in Thayer, IL?
Thayer offers affordable housing with a median home value of $87,300, below the US average of $244,900, and rent that’s lower than the national average at $919/month, and a low poverty rate of 9.4%, better than the national average.
Potential considerations include median household income ($63,125) that falls below the national average. However, Thayer’s smaller community size offers a quieter lifestyle and tight-knit neighborhoods.
Thayer has a population of 638 with a median age of 43.6 years. Compare Thayer with other cities to see how it stacks up, or explore all cities in Illinois.
Similar Cities Near Thayer
Cities in Illinois with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Sun River Terrace | 637 | $43,393 | $107,100 | Compare |
| Yates City | 636 | $61,500 | $94,600 | Compare |
| Cordova | 633 | $75,588 | $177,400 | Compare |
| Industry | 633 | $54,306 | $82,000 | Compare |
| New Boston | 632 | $61,563 | $100,700 | Compare |
| Dahlgren | 631 | $47,500 | $68,800 | Compare |
| Hutsonville | 645 | $57,353 | $62,900 | Compare |
| Coffeen | 630 | $63,125 | $57,300 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in Illinois
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
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Frequently Asked Questions about Thayer
What is the population of Thayer, IL?
The population of Thayer, IL is 638 according to the latest Census data.
What is the median household income in Thayer?
The median household income in Thayer, IL is $63,125 per year.
What is the median home value in Thayer?
The median home value in Thayer, IL is $87,300.
What is the average rent in Thayer?
The median monthly rent in Thayer, IL is $919.
What is the unemployment rate in Thayer?
The unemployment rate in Thayer, IL is 5.1%.