Zip Code: 21673 (Trappe, 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 21673 Zip Code in February 2026 was 13. The month over month percentage change (MoM) was -0.3056%, and the year over year percentage change (YoY) was -0.4186%.

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

The chart below shows the trend of active listing count in the 21673 zip code. The table below shows the trend, and the MoM and YoY percentage changes.

Data Source: Realtor.
Zip Code: 21673 - Trend of Active Listing Count of Houses
Zip Code: 21673 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 39
Sep 2016 40
Oct 2016 37
Nov 2016 35
Dec 2016 36
Jan 2017 29
Feb 2017 23
Mar 2017 24
Apr 2017 32
May 2017 33
Jun 2017 35
Jul 2017 33
Aug 2017 36 0.0909 -0.0769
Sep 2017 38 0.0556 -0.05
Oct 2017 36 -0.0526 -0.027
Nov 2017 35 -0.0278 0.0
Dec 2017 42 0.2 0.1831
Jan 2018 34 -0.1905 0.1724
Feb 2018 29 -0.1618 0.2667
Mar 2018 28 -0.0175 0.1915
Apr 2018 34 0.2143 0.0625
May 2018 33 -0.0441 -0.0152
Jun 2018 32 -0.0308 -0.1
Jul 2018 32 0.0159 -0.0303
Aug 2018 28 -0.1406 -0.2361
Sep 2018 27 -0.0182 -0.2895
Oct 2018 30 0.1111 -0.1667
Nov 2018 31 0.0167 -0.1286
Dec 2018 28 -0.082 -0.3333
Jan 2019 26 -0.0714 -0.2353
Feb 2019 21 -0.1923 -0.2632
Mar 2019 24 0.1429 -0.1429
Apr 2019 27 0.125 -0.2059
May 2019 32 0.1667 -0.0308
Jun 2019 34 0.0635 0.0635
Jul 2019 34 0.0149 0.0625
Aug 2019 35 0.0147 0.2545
Sep 2019 31 -0.1014 0.1481
Oct 2019 31 0.0 0.0333
Nov 2019 30 -0.0323 -0.0164
Dec 2019 30 0.0 0.0714
Jan 2020 28 -0.0833 0.0577
Feb 2020 25 -0.1091 0.1667
Mar 2020 20 -0.1837 -0.1667
Apr 2020 21 0.05 -0.2222
May 2020 20 -0.0714 -0.381
Jun 2020 17 -0.1282 -0.4925
Jul 2020 16 -0.0882 -0.5441
Aug 2020 17 0.0968 -0.5072
Sep 2020 15 -0.1176 -0.5161
Oct 2020 16 0.0667 -0.4839
Nov 2020 18 0.125 -0.4
Dec 2020 19 0.0556 -0.3667
Jan 2021 15 -0.2105 -0.4545
Feb 2021 11 -0.2667 -0.551
Mar 2021 8 -0.2727 -0.6
Apr 2021 10 0.1875 -0.5476
May 2021 9 -0.0526 -0.5385
Jun 2021 13 0.4444 -0.2353
Jul 2021 16 0.1923 0.0
Aug 2021 14 -0.0968 -0.1765
Sep 2021 15 0.0714 0.0
Oct 2021 12 -0.2 -0.25
Nov 2021 11 -0.0833 -0.3889
Dec 2021 10 -0.0909 -0.4737
Jan 2022 10 0.0 -0.3333
Feb 2022 10 0.0 -0.0909
Mar 2022 9 -0.15 0.0625
Apr 2022 11 0.2353 0.1053
May 2022 9 -0.1429 0.0
Jun 2022 11 0.2222 -0.1538
Jul 2022 9 -0.2273 -0.4516
Aug 2022 7 -0.1765 -0.5
Sep 2022 13 0.7857 -0.1667
Oct 2022 15 0.2 0.25
Nov 2022 11 -0.2667 0.0
Dec 2022 14 0.2273 0.35
Jan 2023 14 0.037 0.4
Feb 2023 13 -0.0714 0.3
Mar 2023 13 0.0 0.5294
Apr 2023 12 -0.1154 0.0952
May 2023 10 -0.1304 0.1111
Jun 2023 9 -0.15 -0.2273
Jul 2023 12 0.4118 0.4118
Aug 2023 15 0.25 1.1429
Sep 2023 16 0.0667 0.28
Oct 2023 13 -0.1875 -0.1333
Nov 2023 15 0.1154 0.3182
Dec 2023 10 -0.3103 -0.2593
Jan 2024 10 0.0 -0.2857
Feb 2024 9 -0.15 -0.3462
Mar 2024 12 0.4118 -0.0769
Apr 2024 13 0.0833 0.1304
May 2024 21 0.5769 1.05
Jun 2024 19 -0.0732 1.2353
Jul 2024 20 0.0526 0.6667
Aug 2024 28 0.375 0.8333
Sep 2024 26 -0.0545 0.625
Oct 2024 27 0.0385 1.0769
Nov 2024 24 -0.1111 0.6552
Dec 2024 24 0.0 1.4
Jan 2025 19 -0.2292 0.85
Feb 2025 22 0.1622 1.5294
Mar 2025 22 0.0 0.7917
Apr 2025 21 -0.0233 0.6154
May 2025 28 0.3333 0.3659
Jun 2025 32 0.1429 0.6842
Jul 2025 33 0.0156 0.625
Aug 2025 26 -0.2 -0.0545
Sep 2025 24 -0.0769 -0.0769
Oct 2025 24 0.0 -0.1111
Nov 2025 22 -0.0833 -0.0833
Dec 2025 20 -0.0909 -0.1667
Jan 2026 18 -0.125 -0.0541
Feb 2026 18 0.0286 -0.1628
Mar 2026 13 -0.3056 -0.4186