Zip Code: 21231 (Baltimore, Maryland) - 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 the 21231 Zip Code (Baltimore, Maryland) in February 2026 was $2,253.475. The month over month percentage change (MoM) was -0.23%, and the year over year percentage change (YoY) was 3.33%.

The chart below shows the trend of the smoothed and seasonally adjusted ZORI for the 21231 zip code (Baltimore, Maryland). The table below shows the trend of the smoothed and seasonally adjusted ZORI, and the MoM and YoY percentage changes for the 21231 zip code (Baltimore, Maryland).

You can see similar information for other Maryland zip codes.

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.
Zip Code: 21231 (Baltimore, Maryland) - Trend of Zillow Observed Rent Index (ZORI) for All Homes Plus Multifamily, Smooth and Seasonally Adjusted ($)
Zip Code: 21231 (Baltimore, Maryland) - Trend of Zillow Observed Rent Index (ZORI) for All Homes Plus Multifamily, Smooth and Seasonally Adjusted
1 – 10 of 134
Month ZORI ($) MoM Perc. Change (%) YoY Perc. Change (%)
Jan 2015 0 NaN NaN
Feb 2015 0 NaN NaN
Mar 2015 1563.6392992961066 Infinity NaN
Apr 2015 1541.3150637757205 -1.43 NaN
May 2015 1534.7534658443321 -0.43 NaN
Jun 2015 1532.5189221089363 -0.15 NaN
Jul 2015 1538.8213786994595 0.41 NaN
Aug 2015 1532.5117144331416 -0.41 NaN
Sep 2015 1535.1758773468907 0.17 NaN
Oct 2015 1539.8185876550149 0.30 NaN
Nov 2015 1566.7513448484724 1.75 NaN
Dec 2015 1565.5648800717 -0.08 NaN
Jan 2016 1546.274256085116 -1.23 Infinity
Feb 2016 1526.5695361004364 -1.27 Infinity
Mar 2016 1569.1979206373444 2.79 0.36
Apr 2016 1619.9237860180165 3.23 5.10
May 2016 1628.331407615742 0.52 6.10
Jun 2016 1599.5738748156798 -1.77 4.38
Jul 2016 1572.1921197630127 -1.71 2.17
Aug 2016 1576.5260176608997 0.28 2.87
Sep 2016 1556.3553519321529 -1.28 1.38
Oct 2016 1569.0342388273732 0.82 1.90
Nov 2016 1542.8855635539467 -1.67 -1.52
Dec 2016 1562.911458214867 1.30 -0.17
Jan 2017 1603.0722786245826 2.57 3.67
Feb 2017 1642.4119703986055 2.45 7.59
Mar 2017 1637.831934948439 -0.28 4.37
Apr 2017 1619.2013850430576 -1.14 -0.04
May 2017 1632.7979848081716 0.84 0.27
Jun 2017 1675.4203053079932 2.61 4.74
Jul 2017 1695.6824739506926 1.21 7.86
Aug 2017 1690.2030350710377 -0.32 7.21
Sep 2017 1706.5433010291313 0.97 9.65
Oct 2017 1704.0079821908837 -0.15 8.60
Nov 2017 1723.5262754496453 1.15 11.71
Dec 2017 1723.7781698299407 0.02 10.29
Jan 2018 1714.9400289745822 -0.51 6.98
Feb 2018 1711.889116651298 -0.18 4.23
Mar 2018 1692.058620688569 -1.16 3.31
Apr 2018 1693.308208600552 0.07 4.58
May 2018 1689.1165248783311 -0.25 3.45
Jun 2018 1680.8425076488006 -0.49 0.32
Jul 2018 1686.3890061208028 0.33 -0.55
Aug 2018 1689.391638523631 0.18 -0.05
Sep 2018 1707.9393631431087 1.10 0.08
Oct 2018 1707.4644609227962 -0.03 0.20
Nov 2018 1707.2000551555059 -0.01 -0.95
Dec 2018 1700.6950320380872 -0.38 -1.34
Jan 2019 1694.8709589397426 -0.34 -1.17
Feb 2019 1689.294837590372 -0.33 -1.32
Mar 2019 1705.0090948380218 0.93 0.77
Apr 2019 1711.7816854810817 0.40 1.09
May 2019 1715.6861748516656 0.23 1.57
Jun 2019 1716.4257398913317 0.04 2.12
Jul 2019 1717.6984383059107 0.07 1.86
Aug 2019 1727.5251399534664 0.57 2.26
Sep 2019 1720.390759948348 -0.41 0.73
Oct 2019 1730.4881967419203 0.59 1.35
Nov 2019 1738.2428542254652 0.45 1.82
Dec 2019 1751.8726080510744 0.78 3.01
Jan 2020 1766.6924847082178 0.85 4.24
Feb 2020 1780.1636968678367 0.76 5.38
Mar 2020 1762.4408929846002 -1.00 3.37
Apr 2020 1733.5212459088161 -1.64 1.27
May 2020 1706.5464651070918 -1.56 -0.53
Jun 2020 1694.1702209493894 -0.72 -1.30
Jul 2020 1697.582147184674 0.20 -1.17
Aug 2020 1680.238032939902 -1.02 -2.74
Sep 2020 1677.240643856525 -0.18 -2.51
Oct 2020 1673.1099283573917 -0.25 -3.32
Nov 2020 1682.5652661647655 0.56 -3.20
Dec 2020 1697.0004212078127 0.86 -3.13
Jan 2021 1701.0419349386832 0.24 -3.72
Feb 2021 1720.6359580528062 1.15 -3.34
Mar 2021 1732.308687437809 0.68 -1.71
Apr 2021 1777.7417363294883 2.62 2.55
May 2021 1828.179700648259 2.84 7.13
Jun 2021 1861.4613615179883 1.82 9.88
Jul 2021 1885.2886921806817 1.28 11.06
Aug 2021 1912.6402526692732 1.45 13.83
Sep 2021 1939.2711765975066 1.39 15.62
Oct 2021 1955.5124358434605 0.84 16.88
Nov 2021 1978.3257933765517 1.17 17.58
Dec 2021 2004.4605356091608 1.32 18.12
Jan 2022 2025.7944977564273 1.06 19.09
Feb 2022 2019.256905852501 -0.32 17.36
Mar 2022 2007.3611720904905 -0.59 15.88
Apr 2022 2008.592829113056 0.06 12.99
May 2022 2007.9532770626372 -0.03 9.83
Jun 2022 2029.2083204671367 1.06 9.01
Jul 2022 2033.5951857124398 0.22 7.87
Aug 2022 2047.5381697100534 0.69 7.05
Sep 2022 2053.3701062469468 0.28 5.88
Oct 2022 2058.25666518867 0.24 5.25
Nov 2022 2054.7731195272186 -0.17 3.86
Dec 2022 2045.494732577373 -0.45 2.05
Jan 2023 2047.4749732470125 0.10 1.07
Feb 2023 2051.5820743744966 0.20 1.60
Mar 2023 2063.219336461957 0.57 2.78
Apr 2023 2037.4333005851654 -1.25 1.44
May 2023 2044.0870249300783 0.33 1.80
Jun 2023 2051.815150978602 0.38 1.11
Jul 2023 2078.977717679934 1.32 2.23
Aug 2023 2080.756170565332 0.09 1.62
Sep 2023 2089.975772447282 0.44 1.78
Oct 2023 2084.5967421090977 -0.26 1.28
Nov 2023 2095.4598152178373 0.52 1.98
Dec 2023 2081.9447293010144 -0.64 1.78
Jan 2024 2104.05894911137 1.06 2.76
Feb 2024 2128.969973997608 1.18 3.77
Mar 2024 2150.106362463307 0.99 4.21
Apr 2024 2162.8676567774914 0.59 6.16
May 2024 2159.438207850709 -0.16 5.64
Jun 2024 2158.1992208704633 -0.06 5.19
Jul 2024 2148.196918914121 -0.46 3.33
Aug 2024 2164.8555061043057 0.78 4.04
Sep 2024 2160.933602836652 -0.18 3.40
Oct 2024 2178.8218377278977 0.83 4.52
Nov 2024 2164.485849930819 -0.66 3.29
Dec 2024 2176.357147884379 0.55 4.54
Jan 2025 2172.688638154149 -0.17 3.26
Feb 2025 2180.802477418954 0.37 2.44
Mar 2025 2175.0746462241077 -0.26 1.16
Apr 2025 2190.1733099981543 0.69 1.26
May 2025 2201.8473826464347 0.53 1.96
Jun 2025 2207.4710308337385 0.26 2.28
Jul 2025 2213.9908613300418 0.30 3.06
Aug 2025 2210.4832545200593 -0.16 2.11
Sep 2025 2220.881628088906 0.47 2.77
Oct 2025 2222.0737960828424 0.05 1.99
Nov 2025 2241.4842753370363 0.87 3.56
Dec 2025 2254.019164181566 0.56 3.57
Jan 2026 2258.7340434885855 0.21 3.96
Feb 2026 2253.4753550543023 -0.23 3.33