Gillespie, IL demographics:
population, income, and more
Gillespie population
How many people live in Gillespie
Gillespie is home to 2,815 residents, according to the most recent Census data. Gender-wise, 53.6% of Gillespie locals are male, and 46.4% are female.
Age demographics
The median age in Gillespie is 45, with the population distributed as follows: about 17.4% are children under 15, then 13.8% are in the 15 to 24 age group. Adults between 25 and 44 make up 18.2% of the population, while another 29.4% fall into the 45 to 64 bracket. Finally, around 21.2% are 65 or older.
Racial makeup
There’s also a share of 7.5% that includes residents with two or more races.
Households in Gillespie
A peek inside Gillespie households
Gillespie has 1,135 households, with an average of 2 members in each. Of these, 65.3% are families, while the remaining 34.7% are made up of individuals living alone or with non-relatives, such as roommates.
Households stats
Housing in Gillespie
The housing landscape of Gillespie
Gillespie's housing consists of 1,346 units, with 84.9% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 1.6% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 1.6% of the housing landscape.
The age of buildings in Gillespie
In Gillespie, the median construction year is 1951. About 33.4% of homes were built before the 1940s, with another 15.3% going up by 1949. Most development happened in the second half of the 20th century. Then, 1% of homes were added from 2000 to 2009, 7.1% between 2010 and 2019, and 1.9% are part of the newest wave of development.
Gillespie occupancy rates
Out of the 1,135 occupied housing units in Gillespie, 72.6% are owner-occupied, while 27.4% are lived in by tenants. Meanwhile, 15.7% of all homes on the local market sit vacant.
Gillespie housing costs
Housing costs in Gillespie come to a median of $748 per month, while tenants specifically pay a median gross rent of $750.
Education in Gillespie
Gillespie education at a glance
About 48.2% of the population in Gillespie went to high school, while 28.5% pursued college studies. Another 3.8% earned an associate degree and 14.1% hold a bachelor’s. Meanwhile, 5.2% went even further, earning a master’s or doctorate.
Income in Gillespie
How much people earn in Gillespie
The average annual household income in Gillespie was $89,461 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +4.4% change from the previous year. At the same time, the median income stood at $82,772, reflecting a +7.8% shift over the same period.
Gillespie income by age
In Gillespie, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $78,413. Those with someone between 45 and 64 in charge, often well established professionally, earn $112,904 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $121,500, while those led by someone over 65, many of whom may be retired, have about $37,097 in earnings. Overall, 83.8% of the locals in this community live above the poverty line.
Average renter income in Gillespie
To get a better sense of what renters earn on average in Gillespie, their median household income was $37,750 according to 2022 Census data. In addition, the rent-to-income ratio in the area, at 23.8%, shows what portion of their earnings goes toward housing expenses.
Employment in Gillespie
Workforce and job types in Gillespie
The job market in Gillespie is powered by 1,335 working residents, spread across a range of industries and roles. 68.8% of the working population are employed in professional or administrative positions, while 31.2% are in hands-on or service-based jobs. Also, 4% run their own businesses, 70% are employed by private companies, and 22.1% work in the public sector.
Workforce demographics
Available workforce
The unemployment rate in Gillespie stands at 4.8%, representing the share of the workforce currently without a job and actively looking for one.
Transportation in Gillespie
How people get around in Gillespie
What is the median and average household income in Gillespie by zipcode?
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FAQs about Gillespie demographics
What is the total population of Gillespie?
What is the gender ratio in Gillespie?
- 53.6% males (1,509 residents)
- 46.4% females (1,306 residents)
What is the median age in Gillespie?
What is the age distribution of the population in Gillespie?
- Under 15: 17.4% (491 residents)
- Ages 15-24: 13.8% (387 residents)
- Ages 25-44: 18.2% (513 residents)
- Ages 45-64: 29.4% (828 residents)
- Over 65: 21.2% (596 residents)
What is the racial and ethnic makeup of Gillespie?
- White: 92.3% (2,597 residents)
- Black or African American: 0% (0 residents)
- American Indian and Alaska Native: 0% (0 residents)
- Asian: 0% (0 residents)
- Native Hawaiian and Other Pacific Islander: 0% (0 residents)
- Two or More Races: 7.5% (212 residents)
- Other: 0.2% (6 residents)
What percentage of the population in Gillespie are U.S.-born citizens?
How many housing units are there in Gillespie?
How many households are in Gillespie and what is the average household size?
What is the median household income in Gillespie?
What is the employment rate and job market overview for Gillespie?
Job types:
- White-collar workers: 68.8% (919 residents)
- Blue-collar workers: 31.2% (416 residents)
Places of employment:
- Self-employed: 4% (53 residents)
- Private companies: 70% (935 residents)
- Governmental workers: 22.1% (295 residents)
- Not-for-profit companies: 3.9% (52 residents)
Data source & methodology
The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.
The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.
No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.