Williamson County, Illinois - Trend of Zillow Home Value Index (ZHVI) for All Homes (SFR, Condo/Co-op), Smooth and Seasonally Adjusted (Zillow)

Updated on March 22, 2026.

According to data from Zillow.com, the smoothed and seasonally adjusted Zillow home value index (ZHVI) for All Homes (SFR, Condo/Co-op) in Williamson County, Illinois in February 2026 was $153,440.549. The month over month percentage change (MoM) was 0.81%, and the year over year percentage change (YoY) was 1.98%.

The chart below shows the trend of the smoothed and seasonally adjusted ZHVI for Williamson County, IL. The table below shows the trend of the smoothed and seasonally adjusted ZHVI, and the MoM and YoY percentage changes for Williamson County, IL.

You can see similar information for other Illinois counties, and for Illinois.

Note: Zillow Home Value Index (ZHVI) is a measure of the typical home value and market changes across a given region and housing type. It reflects the typical value for homes in the 35th to 65th percentile range.

Data Source: Zillow.
Williamson County, IL - Trend of Zillow Home Value Index (ZHVI), Smooth and Seasonally Adjusted ($)
Williamson County, IL - Trend of Zillow Home Value Index (ZHVI), Smooth and Seasonally Adjusted
1 – 10 of 134
Month ZHVI ($) MoM Perc. Change (%) YoY Perc. Change (%)
Jan 2015 108645.80325041861 0.75 0.78
Feb 2015 109108.00919584754 0.43 1.14
Mar 2015 109422.41019508844 0.29 1.58
Apr 2015 109887.75893611523 0.43 2.64
May 2015 110483.35128911921 0.54 3.63
Jun 2015 111038.31416707548 0.50 3.94
Jul 2015 111564.4673825415 0.47 3.96
Aug 2015 112063.52921416466 0.45 4.16
Sep 2015 112298.33959018218 0.21 4.37
Oct 2015 112250.99208265985 -0.04 4.45
Nov 2015 111966.2481448076 -0.25 4.38
Dec 2015 111380.85699173261 -0.52 3.29
Jan 2016 111083.18855969452 -0.27 2.24
Feb 2016 111679.68054471682 0.54 2.36
Mar 2016 112891.8119261327 1.09 3.17
Apr 2016 113962.22830523732 0.95 3.71
May 2016 114045.75228333157 0.07 3.22
Jun 2016 113617.52864999167 -0.37 2.32
Jul 2016 112401.45528195608 -1.07 0.75
Aug 2016 111753.0632033689 -0.58 -0.28
Sep 2016 111363.38506722741 -0.35 -0.83
Oct 2016 111858.66812113782 0.45 -0.35
Nov 2016 112289.13312305343 0.39 0.29
Dec 2016 112979.12298017269 0.61 1.44
Jan 2017 113678.65744422462 0.62 2.34
Feb 2017 114152.90570299618 0.42 2.22
Mar 2017 114197.85641057328 0.04 1.16
Apr 2017 114183.37885748089 -0.01 0.19
May 2017 113918.044734257 -0.23 -0.11
Jun 2017 113688.15145271416 -0.20 0.06
Jul 2017 113426.80154924312 -0.23 0.91
Aug 2017 113797.27222969582 0.33 1.83
Sep 2017 114598.83906444022 0.70 2.91
Oct 2017 115279.82463750434 0.59 3.06
Nov 2017 115747.94189996307 0.41 3.08
Dec 2017 116197.89555369808 0.39 2.85
Jan 2018 116537.77006486502 0.29 2.52
Feb 2018 116380.53730522264 -0.13 1.95
Mar 2018 116663.85229592916 0.24 2.16
Apr 2018 116861.90814059885 0.17 2.35
May 2018 117047.9289371833 0.16 2.75
Jun 2018 115906.68247446574 -0.97 1.95
Jul 2018 115298.20162370174 -0.52 1.65
Aug 2018 115052.3342205875 -0.21 1.10
Sep 2018 115533.91975929505 0.42 0.82
Oct 2018 115137.84332707438 -0.34 -0.12
Nov 2018 114325.16622195451 -0.71 -1.23
Dec 2018 113434.49373804202 -0.78 -2.38
Jan 2019 112761.6364925225 -0.59 -3.24
Feb 2019 112928.38681756893 0.15 -2.97
Mar 2019 114184.32149145262 1.11 -2.12
Apr 2019 116776.25782678746 2.27 -0.07
May 2019 120009.06728197499 2.77 2.53
Jun 2019 122722.65608387098 2.26 5.88
Jul 2019 124604.14609075239 1.53 8.07
Aug 2019 125267.89440771991 0.53 8.88
Sep 2019 124809.75557671789 -0.37 8.03
Oct 2019 123812.62368023764 -0.80 7.53
Nov 2019 123269.91681787446 -0.44 7.82
Dec 2019 123478.36545778056 0.17 8.85
Jan 2020 122883.94571562177 -0.48 8.98
Feb 2020 121821.83065722184 -0.86 7.88
Mar 2020 120624.39141648292 -0.98 5.64
Apr 2020 120784.44432368579 0.13 3.43
May 2020 121056.1429539342 0.23 0.87
Jun 2020 121289.75247319037 0.19 -1.17
Jul 2020 122369.8368156603 0.89 -1.79
Aug 2020 124599.97680959367 1.82 -0.53
Sep 2020 127687.98757958936 2.48 2.31
Oct 2020 129556.09380822799 1.46 4.64
Nov 2020 130528.43430854638 0.75 5.89
Dec 2020 130334.97921278782 -0.15 5.55
Jan 2021 130228.29527322513 -0.08 5.98
Feb 2021 130827.40671598776 0.46 7.39
Mar 2021 131557.63617745132 0.56 9.06
Apr 2021 132105.42971025454 0.42 9.37
May 2021 131842.8704276969 -0.20 8.91
Jun 2021 131904.7342437151 0.05 8.75
Jul 2021 131539.07558888453 -0.28 7.49
Aug 2021 130471.53875113341 -0.81 4.71
Sep 2021 129340.2249966915 -0.87 1.29
Oct 2021 130022.68683937406 0.53 0.36
Nov 2021 132482.05196882423 1.89 1.50
Dec 2021 135242.8248718919 2.08 3.77
Jan 2022 137508.21171988294 1.68 5.59
Feb 2022 139303.39791846214 1.31 6.48
Mar 2022 141328.60926260502 1.45 7.43
Apr 2022 142507.79421520172 0.83 7.87
May 2022 143244.70643441056 0.52 8.65
Jun 2022 143344.22433796432 0.07 8.67
Jul 2022 143393.53020576359 0.03 9.01
Aug 2022 142985.2010901293 -0.28 9.59
Sep 2022 142444.33096539296 -0.38 10.13
Oct 2022 141895.6680616906 -0.38 9.13
Nov 2022 140965.6679075187 -0.65 6.40
Dec 2022 140369.9010575077 -0.42 3.79
Jan 2023 140542.03339237586 0.12 2.21
Feb 2023 140734.24141186313 0.14 1.03
Mar 2023 140864.48696427827 0.09 -0.33
Apr 2023 140881.7411915881 0.01 -1.14
May 2023 142133.6162862302 0.89 -0.78
Jun 2023 143521.34518134117 0.98 0.12
Jul 2023 144578.7337072429 0.74 0.83
Aug 2023 145030.57674479054 0.31 1.43
Sep 2023 145571.66519514206 0.37 2.19
Oct 2023 146148.8523803973 0.40 3.00
Nov 2023 146687.10249463256 0.37 4.06
Dec 2023 146685.88291386236 0.00 4.50
Jan 2024 146549.62215779992 -0.09 4.28
Feb 2024 146977.04847934467 0.29 4.44
Mar 2024 147948.6679013939 0.66 5.03
Apr 2024 148910.3963177027 0.65 5.70
May 2024 149100.91981837427 0.13 4.90
Jun 2024 148858.5534772255 -0.16 3.72
Jul 2024 148307.01128756124 -0.37 2.58
Aug 2024 148320.18061495546 0.01 2.27
Sep 2024 148161.32863908188 -0.11 1.78
Oct 2024 148587.5079393125 0.29 1.67
Nov 2024 149066.84032896403 0.32 1.62
Dec 2024 149486.10883469737 0.28 1.91
Jan 2025 150045.090876008 0.37 2.38
Feb 2025 150460.72764834602 0.28 2.37
Mar 2025 151147.76562843195 0.46 2.16
Apr 2025 151780.03640851504 0.42 1.93
May 2025 152475.44923419016 0.46 2.26
Jun 2025 152778.5201801353 0.20 2.63
Jul 2025 152001.5466345639 -0.51 2.49
Aug 2025 151218.95736639856 -0.51 1.95
Sep 2025 150832.05760222446 -0.26 1.80
Oct 2025 151087.66230670418 0.17 1.68
Nov 2025 151358.08190717452 0.18 1.54
Dec 2025 151689.69029235502 0.22 1.47
Jan 2026 152211.53661278155 0.34 1.44
Feb 2026 153440.5489770849 0.81 1.98