Winnebago County, Illinois - Trend of Zillow Observed Rent Index (ZORI) for All Homes Plus Multifamily, Smooth and Seasonally Adjusted (Zillow)

Updated on March 22, 2026.

According to data from Zillow.com, the smoothed and seasonally adjusted Zillow Observed Rent Index (ZORI) for All Homes Plus Multifamily in Winnebago County, Illinois in February 2026 was $1,189.613. The month over month percentage change (MoM) was 0.16%, and the year over year percentage change (YoY) was 7.19%.

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

You can see similar information for other Illinois counties.

Note: Zillow Observed Rent Index (ZORI) is a smoothed measure of the typical observed market rate rent across a given region. ZORI is a repeat-rent index that is weighted to the rental housing stock to ensure representativeness across the entire market, not just homes currently listed for-rent.

Data Source: Zillow.
Winnebago County, IL - Trend of Zillow Observed Rent Index (ZORI) for All Homes Plus Multifamily, Smooth and Seasonally Adjusted ($)
Winnebago County, IL - Trend of Zillow Observed Rent Index (ZORI) for All Homes Plus Multifamily, Smooth and Seasonally Adjusted
1 – 10 of 134
Month ZORI ($) MoM Perc. Change (%) YoY Perc. Change (%)
Jan 2015 612.2004578691538 204.58 NaN
Feb 2015 619.6365341589511 1.22 NaN
Mar 2015 614.3456663712955 -0.85 NaN
Apr 2015 620.432872150544 0.99 NaN
May 2015 623.9651188723082 0.57 NaN
Jun 2015 632.435344676931 1.36 NaN
Jul 2015 629.321195780329 -0.49 NaN
Aug 2015 629.6738691847083 0.06 NaN
Sep 2015 632.9681579507242 0.52 NaN
Oct 2015 635.528293867328 0.40 NaN
Nov 2015 633.7955668631529 -0.27 3628.21
Dec 2015 630.7704474748546 -0.48 213.82
Jan 2016 635.0771664655528 0.68 3.74
Feb 2016 636.9260852086173 0.29 2.79
Mar 2016 638.38677857124 0.23 3.91
Apr 2016 638.5656935135546 0.03 2.92
May 2016 641.798026753822 0.51 2.86
Jun 2016 641.6793624009885 -0.02 1.46
Jul 2016 647.8719455784562 0.97 2.95
Aug 2016 648.4652445245906 0.09 2.98
Sep 2016 654.1327972183824 0.87 3.34
Oct 2016 655.2470349488204 0.17 3.10
Nov 2016 659.3855402175918 0.63 4.04
Dec 2016 661.0629683949776 0.25 4.80
Jan 2017 659.2910414144392 -0.27 3.81
Feb 2017 658.226530173666 -0.16 3.34
Mar 2017 660.1258955259848 0.29 3.41
Apr 2017 664.686556397873 0.69 4.09
May 2017 665.7583135191783 0.16 3.73
Jun 2017 666.4333885989524 0.10 3.86
Jul 2017 665.2024272595208 -0.18 2.68
Aug 2017 668.8855958065459 0.55 3.15
Sep 2017 669.1626034530866 0.04 2.30
Oct 2017 672.6825520595742 0.53 2.66
Nov 2017 674.1951762016845 0.23 2.25
Dec 2017 677.8866657358384 0.55 2.55
Jan 2018 678.8799870229012 0.15 2.97
Feb 2018 682.4146333328982 0.52 3.68
Mar 2018 686.3693901870564 0.58 3.98
Apr 2018 684.7731733596084 -0.23 3.02
May 2018 685.5143857769851 0.11 2.97
Jun 2018 686.8398790337094 0.19 3.06
Jul 2018 693.2540138274371 0.93 4.22
Aug 2018 695.9579052030272 0.39 4.05
Sep 2018 698.2915348061211 0.34 4.35
Oct 2018 697.9297614332007 -0.05 3.75
Nov 2018 704.1249783149335 0.89 4.44
Dec 2018 707.3703663651999 0.46 4.35
Jan 2019 712.7413704835548 0.76 4.99
Feb 2019 710.5798933833712 -0.30 4.13
Mar 2019 712.0930274618152 0.21 3.75
Apr 2019 716.5862396892289 0.63 4.65
May 2019 720.5436651316961 0.55 5.11
Jun 2019 724.9233907001575 0.61 5.55
Jul 2019 725.4170944625778 0.07 4.64
Aug 2019 727.567418028884 0.30 4.54
Sep 2019 730.7299559330975 0.44 4.64
Oct 2019 735.4635895151366 0.65 5.38
Nov 2019 735.6748840768482 0.03 4.48
Dec 2019 737.866050594423 0.30 4.31
Jan 2020 740.3926276423997 0.34 3.88
Feb 2020 747.6157869390314 0.98 5.21
Mar 2020 748.3437233897887 0.10 5.09
Apr 2020 749.2505381972343 0.12 4.56
May 2020 750.5108098768696 0.17 4.16
Jun 2020 754.156804125749 0.49 4.03
Jul 2020 764.6228931966775 1.39 5.41
Aug 2020 778.1836658913179 1.77 6.96
Sep 2020 789.4229108560043 1.44 8.03
Oct 2020 789.7471079013186 0.04 7.38
Nov 2020 788.9244672166135 -0.10 7.24
Dec 2020 790.7409874407424 0.23 7.17
Jan 2021 803.6578440596256 1.63 8.55
Feb 2021 820.3235301399718 2.07 9.73
Mar 2021 825.0225441206329 0.57 10.25
Apr 2021 824.6750231541448 -0.04 10.07
May 2021 824.7655656727992 0.01 9.89
Jun 2021 833.8258259260277 1.10 10.56
Jul 2021 837.9631431486848 0.50 9.59
Aug 2021 838.5400251715048 0.07 7.76
Sep 2021 841.040968461472 0.30 6.54
Oct 2021 851.4193716304233 1.23 7.81
Nov 2021 863.588061752016 1.43 9.46
Dec 2021 874.5230655489795 1.27 10.60
Jan 2022 877.6566503230291 0.36 9.21
Feb 2022 875.4508451216464 -0.25 6.72
Mar 2022 883.9454841594369 0.97 7.14
Apr 2022 900.6350156785667 1.89 9.21
May 2022 915.1902539779993 1.62 10.96
Jun 2022 918.9036627669961 0.41 10.20
Jul 2022 916.9278563679693 -0.21 9.42
Aug 2022 919.9574995930373 0.33 9.71
Sep 2022 924.838579790358 0.53 9.96
Oct 2022 932.2801904197604 0.81 9.50
Nov 2022 933.1766170993627 0.10 8.06
Dec 2022 937.1877175444845 0.43 7.17
Jan 2023 937.904299129931 0.08 6.87
Feb 2023 948.7975340933398 1.16 8.38
Mar 2023 959.2955323219383 1.11 8.52
Apr 2023 968.3869089626866 0.95 7.52
May 2023 975.9661691340935 0.78 6.64
Jun 2023 976.5205494074264 0.06 6.27
Jul 2023 983.8371708983051 0.75 7.30
Aug 2023 990.5336515237892 0.68 7.67
Sep 2023 1001.7764799599892 1.14 8.32
Oct 2023 1005.8348853467899 0.41 7.89
Nov 2023 1019.4668691175272 1.36 9.25
Dec 2023 1027.6940801921953 0.81 9.66
Jan 2024 1038.7050951948647 1.07 10.75
Feb 2024 1036.6966813264303 -0.19 9.26
Mar 2024 1032.5571776460379 -0.40 7.64
Apr 2024 1036.5339825337367 0.39 7.04
May 2024 1047.7047057522943 1.08 7.35
Jun 2024 1056.3670019964575 0.83 8.18
Jul 2024 1061.182014056663 0.46 7.86
Aug 2024 1063.7471103991106 0.24 7.39
Sep 2024 1073.954944034072 0.96 7.21
Oct 2024 1084.7615685450655 1.01 7.85
Nov 2024 1086.6403666519018 0.17 6.59
Dec 2024 1086.7749562454258 0.01 5.75
Jan 2025 1093.1613044295486 0.59 5.24
Feb 2025 1109.8435769098635 1.53 7.06
Mar 2025 1122.5415533962482 1.14 8.72
Apr 2025 1127.7692632051915 0.47 8.80
May 2025 1128.4530279576584 0.06 7.71
Jun 2025 1137.1582210415638 0.77 7.65
Jul 2025 1146.8145539587122 0.85 8.07
Aug 2025 1157.5830019284138 0.94 8.82
Sep 2025 1159.1732522433913 0.14 7.94
Oct 2025 1163.244573913309 0.35 7.24
Nov 2025 1170.8467164894164 0.65 7.75
Dec 2025 1182.0587013489876 0.96 8.77
Jan 2026 1187.7445158010914 0.48 8.65
Feb 2026 1189.6126566346456 0.16 7.19