Zip Code: 21791 (Union Bridge, 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 21791 Zip Code in February 2026 was 11. The month over month percentage change (MoM) was -0.0833%, and the year over year percentage change (YoY) was 1.4444%.

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

The chart below shows the trend of active listing count in the 21791 zip code. The table below shows the trend, and the MoM and YoY percentage changes.

Data Source: Realtor.
Zip Code: 21791 - Trend of Active Listing Count of Houses
Zip Code: 21791 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 17
Sep 2016 17
Oct 2016 15
Nov 2016 16
Dec 2016 14
Jan 2017 14
Feb 2017 11
Mar 2017 13
Apr 2017 12
May 2017 12
Jun 2017 12
Jul 2017 12
Aug 2017 17 0.4167 0.0
Sep 2017 18 0.0294 0.0294
Oct 2017 19 0.0857 0.2667
Nov 2017 20 0.0263 0.2188
Dec 2017 20 0.0 0.4444
Jan 2018 16 -0.1795 0.1429
Feb 2018 10 -0.375 -0.0909
Mar 2018 9 -0.1 -0.28
Apr 2018 10 0.1111 -0.1304
May 2018 16 0.55 0.2917
Jun 2018 14 -0.0968 0.2174
Jul 2018 17 0.2143 0.4167
Aug 2018 16 -0.0588 -0.0588
Sep 2018 18 0.125 0.0286
Oct 2018 19 0.0556 0.0
Nov 2018 16 -0.1842 -0.2051
Dec 2018 16 0.0 -0.2051
Jan 2019 14 -0.0968 -0.125
Feb 2019 10 -0.2857 0.0
Mar 2019 12 0.15 0.2778
Apr 2019 16 0.3913 0.6
May 2019 19 0.1875 0.2258
Jun 2019 21 0.1053 0.5
Jul 2019 24 0.1429 0.4118
Aug 2019 22 -0.1042 0.3438
Sep 2019 22 0.0233 0.2222
Oct 2019 21 -0.0455 0.1053
Nov 2019 21 0.0 0.3548
Dec 2019 18 -0.1429 0.1613
Jan 2020 19 0.0278 0.3214
Feb 2020 16 -0.1351 0.6
Mar 2020 14 -0.125 0.2174
Apr 2020 11 -0.25 -0.3438
May 2020 12 0.1429 -0.3684
Jun 2020 15 0.25 -0.2857
Jul 2020 14 -0.0667 -0.4167
Aug 2020 9 -0.3571 -0.5814
Sep 2020 11 0.2222 -0.5
Oct 2020 13 0.1364 -0.4048
Nov 2020 8 -0.36 -0.619
Dec 2020 7 -0.125 -0.6111
Jan 2021 4 -0.4286 -0.7838
Feb 2021 3 -0.25 -0.8125
Mar 2021 2 -0.3333 -0.8571
Apr 2021 3 0.25 -0.7619
May 2021 6 1.2 -0.5417
Jun 2021 6 0.0909 -0.6
Jul 2021 8 0.25 -0.4643
Aug 2021 13 0.7333 0.4444
Sep 2021 10 -0.2308 -0.0909
Oct 2021 11 0.1 -0.12
Nov 2021 8 -0.2727 0.0
Dec 2021 7 -0.1875 -0.0714
Jan 2022 5 -0.3077 0.125
Feb 2022 4 -0.1111 0.3333
Mar 2022 3 -0.25 0.5
Apr 2022 5 0.5 0.8
May 2022 0 -1.0 -1.0
Jun 2022 4 -0.4167
Jul 2022 3 -0.1429 -0.6
Aug 2022 3 0.0 -0.7692
Sep 2022 3 -0.1667 -0.75
Oct 2022 3 0.0 -0.7727
Nov 2022 4 0.6 -0.5
Dec 2022 3 -0.375 -0.6154
Jan 2023 2 -0.2 -0.5556
Feb 2023 3 0.5 -0.25
Mar 2023 2 -0.3333 -0.3333
Apr 2023 4 0.75 -0.2222
May 2023 4 0.1429
Jun 2023 5 0.25 0.4286
Jul 2023 3 -0.4 0.0
Aug 2023 5 0.6667 0.6667
Sep 2023 5 0.0 1.0
Oct 2023 3 -0.4 0.2
Nov 2023 5 0.5 0.125
Dec 2023 5 0.0 0.8
Jan 2024 4 -0.1111 1.0
Feb 2024 2 -0.625 -0.5
Mar 2024 3 1.0 0.5
Apr 2024 5 0.6667 0.4286
May 2024 6 0.1 0.375
Jun 2024 8 0.3636 0.5
Jul 2024 5 -0.3333 0.6667
Aug 2024 5 0.0 0.0
Sep 2024 5 0.0 0.0
Oct 2024 5 -0.1 0.5
Nov 2024 6 0.2222 0.2222
Dec 2024 7 0.2727 0.5556
Jan 2025 6 -0.1429 0.5
Feb 2025 7 0.0833 3.3333
Mar 2025 5 -0.3077 0.5
Apr 2025 6 0.3333 0.2
May 2025 7 0.0833 0.1818
Jun 2025 12 0.8462 0.6
Jul 2025 13 0.0833 1.6
Aug 2025 12 -0.0769 1.4
Sep 2025 7 -0.4167 0.4
Oct 2025 10 0.4286 1.2222
Nov 2025 9 -0.1 0.6364
Dec 2025 10 0.1111 0.4286
Jan 2026 11 0.1 0.8333
Feb 2026 12 0.0909 0.8462
Mar 2026 11 -0.0833 1.4444