Zip Code: 21227 (Halethorpe, 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 21227 Zip Code in February 2026 was 28. The month over month percentage change (MoM) was -0.125%, and the year over year percentage change (YoY) was 0.3023%.

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

The chart below shows the trend of active listing count in the 21227 zip code. The table below shows the trend, and the MoM and YoY percentage changes.

Data Source: Realtor.
Zip Code: 21227 - Trend of Active Listing Count of Houses
Zip Code: 21227 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 116
Sep 2016 103
Oct 2016 102
Nov 2016 96
Dec 2016 86
Jan 2017 73
Feb 2017 65
Mar 2017 64
Apr 2017 71
May 2017 82
Jun 2017 82
Jul 2017 84
Aug 2017 80 -0.0476 -0.3103
Sep 2017 77 -0.0375 -0.2524
Oct 2017 73 -0.0519 -0.2808
Nov 2017 72 -0.0137 -0.25
Dec 2017 75 0.0417 -0.1228
Jan 2018 73 -0.0267 0.0
Feb 2018 68 -0.0685 0.0462
Mar 2018 67 -0.0147 0.0551
Apr 2018 65 -0.0299 -0.078
May 2018 58 -0.1154 -0.2988
Jun 2018 52 -0.0957 -0.362
Jul 2018 61 0.1731 -0.2738
Aug 2018 77 0.2541 -0.0438
Sep 2018 70 -0.085 -0.0909
Oct 2018 85 0.2143 0.1644
Nov 2018 94 0.1 0.2986
Dec 2018 95 0.0107 0.26
Jan 2019 88 -0.0688 0.2055
Feb 2019 87 -0.0114 0.2794
Mar 2019 71 -0.1897 0.0522
Apr 2019 69 -0.0213 0.0615
May 2019 71 0.029 0.2348
Jun 2019 75 0.0493 0.4327
Jul 2019 68 -0.0872 0.1148
Aug 2019 73 0.0735 -0.0458
Sep 2019 71 -0.0274 0.0143
Oct 2019 76 0.0634 -0.1118
Nov 2019 79 0.0464 -0.1551
Dec 2019 77 -0.0253 -0.1852
Jan 2020 69 -0.1104 -0.2216
Feb 2020 61 -0.1095 -0.2989
Mar 2020 53 -0.1311 -0.2482
Apr 2020 46 -0.1321 -0.3333
May 2020 48 0.0326 -0.331
Jun 2020 49 0.0316 -0.3423
Jul 2020 43 -0.1224 -0.3676
Aug 2020 38 -0.1163 -0.4795
Sep 2020 41 0.0789 -0.4225
Oct 2020 34 -0.1707 -0.5497
Nov 2020 32 -0.0588 -0.5949
Dec 2020 31 -0.0313 -0.5974
Jan 2021 26 -0.1774 -0.6277
Feb 2021 22 -0.1373 -0.6393
Mar 2021 21 -0.0682 -0.6132
Apr 2021 19 -0.0732 -0.587
May 2021 16 -0.1579 -0.6632
Jun 2021 25 0.5625 -0.4898
Jul 2021 29 0.14 -0.3372
Aug 2021 35 0.2281 -0.0789
Sep 2021 37 0.0429 -0.1098
Oct 2021 31 -0.1644 -0.1029
Nov 2021 40 0.3115 0.25
Dec 2021 38 -0.0625 0.2097
Jan 2022 32 -0.16 0.2353
Feb 2022 25 -0.2063 0.1364
Mar 2022 22 -0.14 0.0488
Apr 2022 15 -0.3023 -0.2105
May 2022 19 0.2667 0.1875
Jun 2022 27 0.4211 0.08
Jul 2022 28 0.0185 -0.0351
Aug 2022 34 0.2364 -0.0286
Sep 2022 36 0.0588 -0.0137
Oct 2022 34 -0.0556 0.1148
Nov 2022 33 -0.0294 -0.175
Dec 2022 28 -0.1515 -0.2533
Jan 2023 31 0.1071 -0.0159
Feb 2023 28 -0.1129 0.1
Mar 2023 21 -0.2545 -0.0465
Apr 2023 18 -0.122 0.2
May 2023 18 0.0 -0.0526
Jun 2023 23 0.25 -0.1667
Jul 2023 20 -0.1111 -0.2727
Aug 2023 21 0.05 -0.3824
Sep 2023 22 0.0238 -0.4028
Oct 2023 24 0.1163 -0.2941
Nov 2023 25 0.0417 -0.2424
Dec 2023 21 -0.18 -0.2679
Jan 2024 18 -0.122 -0.4194
Feb 2024 16 -0.1389 -0.4364
Mar 2024 13 -0.1935 -0.3902
Apr 2024 16 0.28 -0.1111
May 2024 15 -0.0938 -0.1944
Jun 2024 17 0.1379 -0.2667
Jul 2024 20 0.2121 0.0
Aug 2024 21 0.025 -0.0238
Sep 2024 20 -0.0244 -0.0698
Oct 2024 29 0.45 0.2083
Nov 2024 26 -0.1034 0.04
Dec 2024 27 0.0385 0.3171
Jan 2025 27 -0.0185 0.4722
Feb 2025 26 -0.0189 0.6774
Mar 2025 22 -0.1731 0.72
Apr 2025 22 0.0233 0.375
May 2025 29 0.3182 1.0
Jun 2025 26 -0.1034 0.5758
Jul 2025 38 0.4615 0.9
Aug 2025 34 -0.1053 0.6585
Sep 2025 42 0.2353 1.1
Oct 2025 53 0.25 0.8103
Nov 2025 47 -0.1048 0.8077
Dec 2025 52 0.1064 0.9259
Jan 2026 38 -0.2788 0.4151
Feb 2026 32 -0.1467 0.2308
Mar 2026 28 -0.125 0.3023