Zip Code: 21157 (Westminster, 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 21157 Zip Code in February 2026 was 61. The month over month percentage change (MoM) was 0.0517%, and the year over year percentage change (YoY) was 0.3864%.

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

The chart below shows the trend of active listing count in the 21157 zip code. The table below shows the trend, and the MoM and YoY percentage changes.

Data Source: Realtor.
Zip Code: 21157 - Trend of Active Listing Count of Houses
Zip Code: 21157 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 203
Sep 2016 202
Oct 2016 192
Nov 2016 179
Dec 2016 167
Jan 2017 153
Feb 2017 140
Mar 2017 133
Apr 2017 125
May 2017 126
Jun 2017 125
Jul 2017 134
Aug 2017 129 -0.0337 -0.3645
Sep 2017 130 0.0078 -0.3564
Oct 2017 120 -0.0769 -0.375
Nov 2017 123 0.025 -0.3128
Dec 2017 117 -0.0488 -0.2994
Jan 2018 99 -0.1538 -0.3529
Feb 2018 93 -0.0657 -0.3393
Mar 2018 90 -0.0324 -0.3245
Apr 2018 113 0.2626 -0.096
May 2018 128 0.1327 0.0159
Jun 2018 134 0.043 0.0723
Jul 2018 142 0.0637 0.0637
Aug 2018 140 -0.0141 0.0853
Sep 2018 137 -0.0214 0.0538
Oct 2018 136 -0.0073 0.1333
Nov 2018 143 0.0478 0.1585
Dec 2018 133 -0.0667 0.1368
Jan 2019 108 -0.188 0.0909
Feb 2019 115 0.0602 0.2378
Mar 2019 111 -0.0349 0.2346
Apr 2019 106 -0.0407 -0.0619
May 2019 111 0.0425 -0.1367
Jun 2019 113 0.0226 -0.1536
Jul 2019 128 0.1327 -0.0986
Aug 2019 142 0.1094 0.0143
Sep 2019 134 -0.0563 -0.0219
Oct 2019 129 -0.041 -0.0551
Nov 2019 126 -0.0233 -0.1193
Dec 2019 115 -0.0837 -0.1353
Jan 2020 81 -0.2957 -0.25
Feb 2020 84 0.0309 -0.2707
Mar 2020 80 -0.0419 -0.276
Apr 2020 77 -0.0438 -0.2783
May 2020 73 -0.0458 -0.3394
Jun 2020 78 0.0685 -0.3097
Jul 2020 73 -0.0705 -0.4336
Aug 2020 62 -0.1448 -0.5634
Sep 2020 59 -0.0484 -0.5597
Oct 2020 63 0.0678 -0.5097
Nov 2020 53 -0.1587 -0.5777
Dec 2020 37 -0.3113 -0.6826
Jan 2021 39 0.0685 -0.5185
Feb 2021 34 -0.1282 -0.5928
Mar 2021 29 -0.1471 -0.6375
Apr 2021 27 -0.069 -0.6471
May 2021 27 -0.0185 -0.637
Jun 2021 32 0.2075 -0.5897
Jul 2021 39 0.2031 -0.469
Aug 2021 47 0.2208 -0.2419
Sep 2021 51 0.0745 -0.1441
Oct 2021 44 -0.1386 -0.3095
Nov 2021 44 0.0115 -0.1698
Dec 2021 38 -0.1477 0.0274
Jan 2022 28 -0.2667 -0.2949
Feb 2022 20 -0.2727 -0.4118
Mar 2022 19 -0.075 -0.3621
Apr 2022 25 0.3514 -0.0741
May 2022 19 -0.24 -0.283
Jun 2022 29 0.5263 -0.0938
Jul 2022 40 0.3621 0.026
Aug 2022 42 0.0633 -0.1064
Sep 2022 34 -0.1905 -0.3267
Oct 2022 37 0.0882 -0.1494
Nov 2022 38 0.027 -0.1364
Dec 2022 41 0.0658 0.08
Jan 2023 35 -0.1358 0.2727
Feb 2023 29 -0.1714 0.45
Mar 2023 25 -0.1552 0.3243
Apr 2023 27 0.0816 0.06
May 2023 30 0.1321 0.5789
Jun 2023 32 0.05 0.0862
Jul 2023 20 -0.381 -0.5063
Aug 2023 27 0.3846 -0.3571
Sep 2023 30 0.1111 -0.1176
Oct 2023 36 0.2 -0.027
Nov 2023 41 0.125 0.0658
Dec 2023 46 0.1235 0.1235
Jan 2024 40 -0.1209 0.1429
Feb 2024 43 0.0625 0.4655
Mar 2024 40 -0.0706 0.6122
Apr 2024 33 -0.1646 0.2453
May 2024 40 0.2121 0.3333
Jun 2024 36 -0.1 0.1429
Jul 2024 43 0.1944 1.2051
Aug 2024 41 -0.0465 0.5185
Sep 2024 42 0.0244 0.4
Oct 2024 51 0.2024 0.4028
Nov 2024 57 0.1287 0.4074
Dec 2024 47 -0.1754 0.033
Jan 2025 46 -0.0319 0.1375
Feb 2025 47 0.022 0.0941
Mar 2025 44 -0.0538 0.1139
Apr 2025 48 0.0909 0.4545
May 2025 62 0.2813 0.5375
Jun 2025 69 0.122 0.9167
Jul 2025 64 -0.0797 0.4767
Aug 2025 64 0.0 0.5488
Sep 2025 67 0.0551 0.5952
Oct 2025 74 0.1045 0.4653
Nov 2025 73 -0.0135 0.2807
Dec 2025 66 -0.0959 0.4043
Jan 2026 62 -0.0606 0.3626
Feb 2026 58 -0.0645 0.2473
Mar 2026 61 0.0517 0.3864