Zip Code: 21228 (Catonsville, MD) - Trend of Active Listing Count of Houses (Realtor)
Updated on March 13, 2026.

According to data from Realtor.com, the active listing count of houses in the 21228 Zip Code in February 2026 was 42. The month over month percentage change (MoM) was -0.0233%, and the year over year percentage change (YoY) was 0.377%.

You can see similar for other Maryland Zip Codes, and for Maryland.

The chart below shows the trend of active listing count in the 21228 zip code. The table below shows the trend, and the MoM and YoY percentage changes.

Data Source: Realtor.
Zip Code: 21228 - Trend of Active Listing Count of Houses
Zip Code: 21228 Trend of Active Listing Count of Houses
Items per page:
1 – 10 of 116
Month Active Listing Count MoM Perc. Change (%) YoY Perc. Change (%)
Aug 2016 140
Sep 2016 136
Oct 2016 149
Nov 2016 146
Dec 2016 146
Jan 2017 118
Feb 2017 106
Mar 2017 103
Apr 2017 106
May 2017 112
Jun 2017 107
Jul 2017 114
Aug 2017 108 -0.0526 -0.2286
Sep 2017 113 0.0417 -0.1697
Oct 2017 117 0.04 -0.2148
Nov 2017 112 -0.047 -0.2363
Dec 2017 101 -0.0942 -0.3082
Jan 2018 74 -0.2673 -0.3729
Feb 2018 60 -0.1892 -0.4313
Mar 2018 60 0.0 -0.4175
Apr 2018 62 0.0333 -0.4151
May 2018 74 0.1855 -0.3438
Jun 2018 84 0.1361 -0.216
Jul 2018 83 -0.006 -0.2719
Aug 2018 94 0.1325 -0.1296
Sep 2018 93 -0.016 -0.1778
Oct 2018 103 0.1135 -0.1197
Nov 2018 107 0.034 -0.0448
Dec 2018 106 -0.0094 0.0446
Jan 2019 94 -0.109 0.2703
Feb 2019 81 -0.1436 0.3417
Mar 2019 74 -0.087 0.225
Apr 2019 76 0.034 0.2258
May 2019 82 0.0724 0.1088
Jun 2019 101 0.2331 0.2036
Jul 2019 93 -0.0746 0.1205
Aug 2019 83 -0.1075 -0.117
Sep 2019 86 0.0361 -0.0703
Oct 2019 91 0.0523 -0.1214
Nov 2019 91 0.0055 -0.1455
Dec 2019 87 -0.044 -0.1754
Jan 2020 62 -0.2931 -0.3457
Feb 2020 50 -0.1951 -0.3851
Mar 2020 42 -0.1515 -0.4286
Apr 2020 46 0.0833 -0.4013
May 2020 49 0.0769 -0.3988
Jun 2020 48 -0.0204 -0.5224
Jul 2020 50 0.0313 -0.4677
Aug 2020 46 -0.0808 -0.4518
Sep 2020 39 -0.1429 -0.5465
Oct 2020 41 0.0513 -0.547
Nov 2020 43 0.0488 -0.5275
Dec 2020 39 -0.093 -0.5517
Jan 2021 34 -0.1282 -0.4472
Feb 2021 23 -0.3235 -0.5354
Mar 2021 16 -0.3043 -0.619
Apr 2021 25 0.5313 -0.4615
May 2021 27 0.0816 -0.4592
Jun 2021 27 0.0189 -0.4375
Jul 2021 32 0.1852 -0.3535
Aug 2021 35 0.0938 -0.2308
Sep 2021 41 0.1571 0.0385
Oct 2021 43 0.0617 0.0488
Nov 2021 37 -0.1395 -0.1395
Dec 2021 30 -0.2027 -0.2436
Jan 2022 29 -0.0169 -0.1471
Feb 2022 17 -0.4138 -0.2609
Mar 2022 12 -0.2941 -0.25
Apr 2022 19 0.5833 -0.2245
May 2022 19 0.0 -0.283
Jun 2022 23 0.2105 -0.1481
Jul 2022 29 0.2391 -0.1094
Aug 2022 32 0.1228 -0.0857
Sep 2022 34 0.0469 -0.1728
Oct 2022 41 0.2239 -0.0465
Nov 2022 41 0.0 0.1081
Dec 2022 41 -0.0122 0.3729
Jan 2023 32 -0.2099 0.1034
Feb 2023 26 -0.1875 0.5294
Mar 2023 21 -0.1923 0.75
Apr 2023 20 -0.0476 0.0526
May 2023 18 -0.1 -0.0526
Jun 2023 21 0.1667 -0.087
Jul 2023 23 0.0714 -0.2105
Aug 2023 21 -0.0667 -0.3438
Sep 2023 31 0.4524 -0.0896
Oct 2023 25 -0.1803 -0.3902
Nov 2023 29 0.14 -0.3049
Dec 2023 28 -0.0351 -0.321
Jan 2024 29 0.0545 -0.0938
Feb 2024 19 -0.3621 -0.2885
Mar 2024 19 0.0 -0.119
Apr 2024 23 0.2432 0.15
May 2024 22 -0.0435 0.2222
Jun 2024 20 -0.0909 -0.0476
Jul 2024 22 0.1 -0.0222
Aug 2024 19 -0.1364 -0.0952
Sep 2024 32 0.6842 0.0492
Oct 2024 29 -0.1094 0.14
Nov 2024 34 0.193 0.193
Dec 2024 26 -0.2353 -0.0545
Jan 2025 23 -0.1346 -0.2241
Feb 2025 27 0.2 0.4595
Mar 2025 31 0.1296 0.6486
Apr 2025 39 0.2787 0.6957
May 2025 49 0.2436 1.2045
Jun 2025 51 0.0515 1.55
Jul 2025 52 0.0098 1.3409
Aug 2025 61 0.1845 2.2105
Sep 2025 64 0.0492 1.0
Oct 2025 70 0.0859 1.4386
Nov 2025 68 -0.0216 1.0
Dec 2025 66 -0.0294 1.5385
Jan 2026 49 -0.2652 1.1556
Feb 2026 43 -0.1134 0.5926
Mar 2026 42 -0.0233 0.377