Shiloh is home to 14,572 people in Illinois. The population has more than doubled since 2000, adding 6,929 people. Few US cities rank higher on income. 4% of people here were born outside the United States. About 43% of adults have finished a four-year degree. Households here earn about 19% more than in Illinois as a whole.
At a glance
Wealthier
median household income $99,573, above the US median
US median: $82,259
Older
median age 41.0
US median: 38.9
More educated
43% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Shiloh
What changed most since 1990
Population2,655 → 14,572(+449%)US over the same years: +35%
Black share2.8% → 24.4%(+21.5 pts)US over the same years: +0.2 pts
White share92.5% → 60.9%(−31.6 pts)US over the same years: −17.8 pts
Shiloh's population equals 5.7% of St. Clair County's. Its number of residents living in poverty equals 2.9% of the county's. Its number of people who work from home equals 7.7% 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)52.5%(856)
US avg: 26.4%
Gulf War (1990s)53%(863)
US avg: 24.3%
Vietnam era15.4%(251)
US avg: 33.1%
Korean War5.6%(92)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 1,629 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
Shiloh, decade by decade
Shiloh 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
2,655
$82,082
$199,206
21.5%
17.8
2000
7,643
$105,095
$234,994
32.7%
41.6
2010
12,651
$115,861
$300,517
41.6%
59.7
2020
14,098
$105,539
$260,952
40.0%
71.1
2024
14,572
$99,573
$274,000
43.3%
70.3
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.
