Zip Code: 21918 (Conowingo, 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 21918 Zip Code in February 2026 was 11. The month over month percentage change (MoM) was -0.1923%, and the year over year percentage change (YoY) was -0.087%.

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

The chart below shows the trend of active listing count in the 21918 zip code. The table below shows the trend, and the MoM and YoY percentage changes.

Data Source: Realtor.
Zip Code: 21918 - Trend of Active Listing Count of Houses
Zip Code: 21918 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 31
Sep 2016 31
Oct 2016 33
Nov 2016 30
Dec 2016 30
Jan 2017 20
Feb 2017 17
Mar 2017 17
Apr 2017 19
May 2017 21
Jun 2017 20
Jul 2017 25
Aug 2017 26 0.04 -0.1613
Sep 2017 25 -0.0577 -0.2097
Oct 2017 24 -0.0204 -0.2615
Nov 2017 20 -0.1667 -0.3333
Dec 2017 20 -0.025 -0.339
Jan 2018 19 -0.0256 -0.05
Feb 2018 18 -0.0789 0.0294
Mar 2018 19 0.0571 0.0882
Apr 2018 19 0.027 0.0
May 2018 23 0.2105 0.0952
Jun 2018 21 -0.087 0.05
Jul 2018 21 0.0 -0.16
Aug 2018 20 -0.0714 -0.25
Sep 2018 17 -0.1282 -0.3061
Oct 2018 18 0.0588 -0.25
Nov 2018 18 -0.0278 -0.125
Dec 2018 17 -0.0571 -0.1538
Jan 2019 15 -0.0909 -0.2105
Feb 2019 11 -0.2667 -0.3714
Mar 2019 8 -0.2727 -0.5676
Apr 2019 10 0.25 -0.4737
May 2019 13 0.25 -0.4565
Jun 2019 9 -0.28 -0.5714
Jul 2019 12 0.3333 -0.4286
Aug 2019 11 -0.0833 -0.4359
Sep 2019 10 -0.0909 -0.4118
Oct 2019 9 -0.1 -0.5
Nov 2019 10 0.1111 -0.4286
Dec 2019 11 0.1 -0.3333
Jan 2020 9 -0.2273 -0.4333
Feb 2020 7 -0.2353 -0.4091
Mar 2020 7 0.0769 -0.125
Apr 2020 6 -0.2143 -0.45
May 2020 7 0.2727 -0.44
Jun 2020 8 0.1429 -0.1111
Jul 2020 7 -0.1875 -0.4583
Aug 2020 7 0.0769 -0.3636
Sep 2020 6 -0.1429 -0.4
Oct 2020 7 0.0833 -0.2778
Nov 2020 5 -0.2308 -0.5
Dec 2020 6 0.1 -0.5
Jan 2021 6 0.0 -0.3529
Feb 2021 3 -0.4545 -0.5385
Mar 2021 3 0.0 -0.5714
Apr 2021 1 -0.6667 -0.8182
May 2021 2 1.0 -0.7143
Jun 2021 4 1.0 -0.5
Jul 2021 3 -0.375 -0.6154
Aug 2021 2 -0.2 -0.7143
Sep 2021 2 0.0 -0.6667
Oct 2021 3 0.5 -0.5385
Nov 2021 1 -0.6667 -0.8
Dec 2021 2 1.0 -0.6364
Jan 2022 1 -0.5 -0.8182
Feb 2022 0 -1.0 -1.0
Mar 2022 2 -0.5
Apr 2022 2 0.3333 1.0
May 2022 2 0.0 0.0
Jun 2022 2 0.0 -0.5
Jul 2022 2 -0.25 -0.4
Aug 2022 2 0.3333 0.0
Sep 2022 3 0.25 0.25
Oct 2022 4 0.6 0.3333
Nov 2022 4 0.0 3.0
Dec 2022 4 0.0 1.0
Jan 2023 3 -0.25 2.0
Feb 2023 3 -0.1667
Mar 2023 2 -0.2 0.3333
Apr 2023 3 0.5 0.5
May 2023 3 0.0 0.5
Jun 2023 5 0.6667 1.5
Jul 2023 4 -0.3 1.3333
Aug 2023 4 0.1429 1.0
Sep 2023 6 0.5 1.4
Oct 2023 4 -0.3333 0.0
Nov 2023 5 0.25 0.25
Dec 2023 2 -0.6 -0.5
Jan 2024 2 0.0 -0.3333
Feb 2024 3 0.5 0.2
Mar 2024 4 0.1667 0.75
Apr 2024 6 0.7143 1.0
May 2024 16 1.5833 4.1667
Jun 2024 14 -0.129 1.7
Jul 2024 13 -0.037 2.7143
Aug 2024 13 -0.0385 2.125
Sep 2024 14 0.12 1.3333
Oct 2024 15 0.0357 2.625
Nov 2024 15 0.0345 2.0
Dec 2024 12 -0.2 5.0
Jan 2025 12 -0.0417 4.75
Feb 2025 12 0.0435 3.0
Mar 2025 12 -0.0417 2.2857
Apr 2025 9 -0.2174 0.5
May 2025 8 -0.1111 -0.4839
Jun 2025 8 0.0 -0.4074
Jul 2025 12 0.5 -0.0769
Aug 2025 13 0.0833 0.04
Sep 2025 12 -0.0769 -0.1429
Oct 2025 13 0.0417 -0.1379
Nov 2025 14 0.08 -0.1
Dec 2025 13 -0.037 0.0833
Jan 2026 13 -0.0385 0.087
Feb 2026 13 0.04 0.0833
Mar 2026 11 -0.1923 -0.087