Port Byron is home to 1,854 people in Illinois. 84% of homes are owner-occupied. Few US cities rank higher on income. Median rent is $525 a month. Households here earn about 34% more than in Illinois as a whole. The foreign-born share is 2%.
At a glance
Wealthier
median household income $111,667, above the US median
US median: $82,259
Older
median age 41.6
US median: 38.9
Average education
37% hold a bachelor's degree
US average: 36%
Less affordable
home values up 51%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Port Byron
What changed most since 1990
Population1,002 → 1,854(+85%)US over the same years: +35%
Adults with a bachelor's degree13.5% → 36.9%(+23.4 pts)US over the same years: +15.3 pts
White share99.6% → 89.9%(−9.7 pts)US over the same years: −17.8 pts
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)27.7%(36)
US avg: 26.4%
Gulf War (1990s)37.7%(49)
US avg: 24.3%
Vietnam era23.8%(31)
US avg: 33.1%
Korean War1.5%(2)
US avg: 4.5%
World War II6.2%(8)
US avg: 1%
Share of the 130 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
Port Byron, decade by decade
Port Byron 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
1,002
$82,003
$138,004
13.5%
1.0
2000
1,535
$87,017
$183,987
19.9%
6.5
2010
1,647
$92,035
$245,564
30.3%
10.3
2020
1,668
$98,924
$254,528
39.5%
22.8
2024
1,854
$111,667
$278,200
36.9%
23.2
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.
