With 4,229 people, Coal Valley is a city in Illinois. Owners hold 93% of the housing stock. That puts it in the top 6% of US cities for household income. At a median age of 45.3, this is an older place than the country as a whole. 2% of locals were born outside the United States. That is roughly 28% ahead of the Illinois median.
At a glance
Wealthier
median household income $106,850, above the US median
US median: $82,259
Older
median age 45.3
US median: 38.9
Average education
35% hold a bachelor's degree
US average: 36%
Less affordable
home values up 32%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Coal Valley
What changed most since 1990
Median age33.2 → 45.3(+12.1 years)US over the same years: +6.0 years
Adults with a bachelor's degree13.4% → 34.7%(+21.3 pts)US over the same years: +15.3 pts
White share98.3% → 86.3%(−12.0 pts)US over the same years: −17.8 pts
Coal Valley's population equals 3.0% of Rock Island County's. Its number of households without a car equals 0.5% of the county's. Its number of residents living in poverty equals 0.7% of the county's.
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)35.4%(91)
US avg: 26.4%
Gulf War (1990s)15.6%(40)
US avg: 24.3%
Vietnam era35.8%(92)
US avg: 33.1%
Korean War3.1%(8)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 257 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
Coal Valley, decade by decade
Coal Valley 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
1990
2,808
$88,169
$131,764
13.4%
4.3
2000
3,606
$89,676
$163,038
17.6%
11.9
2010
3,743
$93,195
$197,228
25.9%
17.4
2020
3,873
$89,051
$194,896
36.0%
27.5
2024
4,229
$106,850
$215,700
34.7%
31.1
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.
