With 1,458 people, Twin Grove is a city in Illinois. Owners hold 97% of the housing stock. The median age is 49.4, about 10 years above the US median. This is an unusually credentialed place: 60% of adults have a four-year degree. That puts it in the top 4% of US cities for household income. That is roughly 39% ahead of the Illinois median.
At a glance
Wealthier
median household income $116,250, above the US median
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)23.3%(24)
US avg: 26.4%
Gulf War (1990s)42.7%(44)
US avg: 24.3%
Vietnam era8.7%(9)
US avg: 33.1%
Korean War13.6%(14)
US avg: 4.5%
World War II3.9%(4)
US avg: 1%
Share of the 103 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Twin Grove, decade by decade
Twin Grove population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
2010
1,564
$147,454
$312,745
61.0%
12.1
2020
1,524
$132,344
$294,162
52.6%
25.4
2024
1,458
$116,250
$264,800
59.7%
25.1
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
