County market report · FIPS 17199
Williamson County, IL
Carbondale-Marion, IL · Population 66,415 (Census V2020 est.)
Typical value
$157,730
Sep 2026
1M
-0.2%
3M
-0.7%
12M
+0.1%
5Y
+16.7%
10Y
+35.6%
From peak
-1.9%
Peak $160,705 · Mar 2026
Rank US / state
2405 / 92
by 12M change
Zillow Home Value Index
Source: Zillow Home Value Index (ZHVI), all homes, smoothed & seasonally adjusted · data through Sep 2026.
Inflection signal
Price-OnlyNo active signal this month.
Inventory, sales & days on market — Phase 2
Supply and demand confirmation is not yet available.
Yearly values (December)
| Year | ZHVI (Dec) | YoY change |
|---|---|---|
| 2025 | $158,492 | +1.5% |
| 2024 | $156,189 | +1.9% |
| 2023 | $153,263 | +4.5% |
| 2022 | $146,664 | +3.8% |
| 2021 | $141,307 | +3.8% |
| 2020 | $136,179 | +5.6% |
| 2019 | $129,015 | +8.9% |
| 2018 | $118,521 | -2.4% |
| 2017 | $121,408 | +2.8% |
| 2016 | $118,045 | +1.4% |
| 2015 | $116,375 | +3.3% |
| 2014 | $112,668 | +0.1% |
| 2013 | $112,578 | +4.7% |
| 2012 | $107,555 | -6.9% |
| 2011 | $115,533 | -2.4% |
| 2010 | $118,431 | -3.8% |
| 2009 | $123,143 | -3.8% |
| 2008 | $128,053 | — |