Sycamore, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Sycamore, Illinois is 18,243 as of the 2023 American Community Survey, making it the 138th-largest city in Illinois. The median household income is $80,837, the median home value is $254,200, and the median age is 37.6.
The population has grown 8.3% since 2010 (17,522 → 18,968).
18,243
Population
1802
People / sq mi
$80,837
Median Income
$254,200
Median Home Value
Sycamore covers 10.1 sq mi of land at 1802 people per square mile.
About Sycamore, IL
Sycamore is a city in Illinois with a population of 18,243. It ranks #138 among cities in Illinois by population. The median age is 37.6, younger than the national median. The population is 47.2% male and 52.8% female.
The median household income in Sycamore is $80,837, above the US median of $74,580. 8.6% of residents live below the federal poverty level. Home values sit at a median of $254,200, with monthly rent averaging $1,062. The homeownership rate of 71.0% is higher than the national rate of 64.8%.
Educational attainment in Sycamore reflects 43.6% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 12.7% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 26.4 minutes each way.
Sycamore city Population History (2010-2024)
The city of Sycamore city had a population of 17,522 in 2010 and 18,968 in 2024, a 8.3% growth over 14 years. The peak was 18,968 in 2024. Average annual growth rate: 0.57%.
18,968
Population (2024)
17,522
Population (2010)
18,968
Peak (2024)
0.57%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 17,522 |
| 2011 | 17,450 |
| 2012 | 17,503 |
| 2013 | 17,570 |
| 2014 | 17,755 |
| 2015 | 17,772 |
| 2016 | 17,900 |
| 2017 | 18,023 |
| 2018 | 18,125 |
| 2019 | 18,322 |
| 2020 | 18,675 |
| 2021 | 18,778 |
| 2022 | 18,804 |
| 2023 | 18,837 |
| 2024 | 18,968 |
Race & Ethnicity
| White | 88.9% |
| Black or African American | 3.5% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.7% |
| Two or More Races | 0.0% |
Economy & Income
$80,837
Median Household Income
$40,963
Per Capita Income
8.6%
Poverty Rate
2.7%
Unemployment Rate
Housing
$254,200
Median Home Value
$1,062
Median Rent
71.0%
Owner-Occupied
Education
95.9%
High School+
43.6%
Bachelor's+
Commute
1.6%
Drive Alone
76.4%
Public Transit
12.7%
Work From Home
26.4 min
Avg Commute
Community Profile
20.1%
Foreign Born
92.8%
Non-English at Home
6.2%
Veterans
11.9%
With Disability
97.5%
Health Insurance
97.8%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 28.9% |
| Manufacturing | 13.9% |
| Finance, Insurance & Real Estate | 11.4% |
| Retail Trade | 7.8% |
| Education, Health Care & Social Services | 6.3% |
| Information | 5.3% |
| Public Administration | 4.1% |
| Arts, Entertainment & Food Services | 4.0% |
| Construction | 2.9% |
| Transportation & Warehousing | 1.6% |
| Agriculture & Mining | 1.6% |
Largest cities in Illinois
Largest counties in Illinois
Part of Illinois
Metro areas in Illinois
City rankings
Frequently Asked Questions
Sycamore, Illinois has a population of 18,243 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 138th-largest city in Illinois.
The median household income in Sycamore, Illinois is $80,837, with 8.6% of residents living below the federal poverty level.
The median home value in Sycamore, Illinois is $254,200, with median monthly rent at $1,062 and a homeownership rate of 71.0%.
The median age in Sycamore, Illinois is 37.6 years. The population is 47.2% male and 52.8% female.
The population has grown 8.3% since 2010 (17,522 → 18,968).
More from Illinois
Population 2,707,648
Population 179,867
Population 149,785
Population 149,424
Population 147,649
Full rankings of Illinois cities by population
Statewide data for Illinois
Population, race, income, age, and trends across Illinois
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.