Illiopolis, IL housing market
The median sale price was $177,000 in May 2026.
Home values, sales, trends and how Illiopolis compares with the towns next door — updated as new data is published.
Illiopolis at a glance
Only 2 sales in May 2026: in a market this size, monthly medians swing a lot, so the typical value above is the steadier guide.
No new homes permitted in 2025
No permits for new homes were issued in Illiopolis in 2025. The last year with any was 2023 (1 new home).
Homes vs. people, 2010–2020
Between the 2010 and 2020 censuses, Illiopolis's population fell by 45 even though 2 new homes were permitted. Homes are holding fewer people: households are getting smaller, or more homes are used part of the year.
Residents: U.S. Census Bureau, 2010 and 2020 censuses. New homes: permits issued 2010–2019.
Show as a table
| Year | New homes | Single-family | 2+ per building | Value |
|---|---|---|---|---|
| 2025 | 0 | 0 | 0 | — |
| 2024 | 0 | 0 | 0 | — |
| 2023 | 1 | 1 | 0 | $344,000 |
| 2022 | 0 | 0 | 0 | — |
| 2021 | 4 | 2 | 2 | $869,000 |
| 2020 | 0 | 0 | 0 | — |
| 2019 | 0 | 0 | 0 | — |
| 2018 | 0 | 0 | 0 | — |
| 2017 | 0 | 0 | 0 | — |
| 2016 | 0 | 0 | 0 | — |
| 2015 | 0 | 0 | 0 | — |
| 2014 | 0 | 0 | 0 | — |
| 2013 | 0 | 0 | 0 | — |
| 2012 | 0 | 0 | 0 | — |
| 2011 | 1 | 1 | 0 | $167,000 |
| 2010 | 1 | 1 | 0 | $160,000 |
| 2009 | 0 | 0 | 0 | — |
| 2008 | 0 | 0 | 0 | — |
| 2007 | 2 | 2 | 0 | $306,000 |
| 2006 | 0 | 0 | 0 | — |
| 2005 | 0 | 0 | 0 | — |
| 2004 | 2 | 2 | 0 | $259,000 |
| 2003 | 0 | 0 | 0 | — |
| 2002 | 0 | 0 | 0 | — |
| 2001 | 3 | 3 | 0 | $438,000 |
| 2000 | 1 | 1 | 0 | $138,000 |
Illiopolis's permit office didn't report to the Census in 2025, so the 2025 figures are Census estimates.
Homes authorized by building permits, counted in the year the permit was issued. U.S. Census Bureau, Building Permits Survey.
Owners, rent & taxes
U.S. Census Bureau, ACS 2020-2024 · figures for a place this size carry wide margins of error.
A two-bedroom rents for about $1,020
HUD's Fair Market Rent for a two-bedroom in Illiopolis is $1,020 a month, utilities included: roughly what a modest, recently rented unit costs. Renters already in Illiopolis pay a median of $663, so moving in tends to cost more than staying put.
Studio $700 · 4 bedrooms $1,410
U.S. Department of Housing and Urban Development, FY2026 Fair Market Rents by ZIP code (62539; Decatur, IL MSA), weighted by land area. A Fair Market Rent is the 40th-percentile rent plus utilities for a standard unit. Median rent: U.S. Census Bureau, American Community Survey.
Recent listings in Illiopolis
Home values: Zillow Home Value Index (ZHVI), Zillow Research. Sales, days on market and supply: Redfin Data Center, May 2026. Income, ownership, taxes and rent: U.S. Census Bureau, American Community Survey. New homes: U.S. Census Bureau, Building Permits Survey. Fair Market Rents: U.S. Department of Housing and Urban Development. Listings link to their publishers.