Zip Code: 21155 (Upperco, 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 21155 Zip Code in February 2026 was 5. The month over month percentage change (MoM) was -0.1667%, and the year over year percentage change (YoY) was 1.0%.

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

The chart below shows the trend of active listing count in the 21155 zip code. The table below shows the trend, and the MoM and YoY percentage changes.

Data Source: Realtor.
Zip Code: 21155 - Trend of Active Listing Count of Houses
Zip Code: 21155 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 14
Sep 2016 10
Oct 2016 8
Nov 2016 7
Dec 2016 6
Jan 2017 7
Feb 2017 8
Mar 2017 9
Apr 2017 8
May 2017 11
Jun 2017 10
Jul 2017 8
Aug 2017 10 0.25 -0.2857
Sep 2017 11 0.1 0.1
Oct 2017 8 -0.2727 0.0
Nov 2017 8 -0.0625 0.0714
Dec 2017 8 0.0 0.25
Jan 2018 6 -0.2 -0.1429
Feb 2018 4 -0.3333 -0.5
Mar 2018 5 0.125 -0.5
Apr 2018 10 1.2222 0.25
May 2018 15 0.45 0.3182
Jun 2018 12 -0.2069 0.2105
Jul 2018 11 -0.0435 0.375
Aug 2018 16 0.4545 0.6
Sep 2018 15 -0.0938 0.3182
Oct 2018 14 -0.0345 0.75
Nov 2018 13 -0.1071 0.6667
Dec 2018 14 0.12 0.8667
Jan 2019 14 0.0 1.3333
Feb 2019 14 0.0 2.5
Mar 2019 13 -0.1071 1.7778
Apr 2019 11 -0.12 0.1
May 2019 10 -0.0909 -0.3103
Jun 2019 2 -0.8 -0.8261
Jul 2019 5 1.5 -0.5455
Aug 2019 9 0.8 -0.4375
Sep 2019 10 0.1111 -0.3103
Oct 2019 11 0.1 -0.2143
Nov 2019 11 0.0 -0.12
Dec 2019 10 -0.0909 -0.2857
Jan 2020 8 -0.25 -0.4643
Feb 2020 9 0.2 -0.3571
Mar 2020 10 0.1111 -0.2
Apr 2020 9 -0.1 -0.1818
May 2020 9 -0.0556 -0.15
Jun 2020 8 -0.0588 3.0
Jul 2020 4 -0.5625 -0.3
Aug 2020 3 -0.2857 -0.7222
Sep 2020 2 -0.2 -0.8
Oct 2020 5 1.25 -0.5909
Nov 2020 5 0.1111 -0.5455
Dec 2020 6 0.2 -0.4
Jan 2021 7 0.0833 -0.1333
Feb 2021 5 -0.2308 -0.4444
Mar 2021 5 -0.1 -0.55
Apr 2021 4 -0.1111 -0.5556
May 2021 4 -0.125 -0.5882
Jun 2021 5 0.4286 -0.375
Jul 2021 5 0.0 0.4286
Aug 2021 4 -0.2 0.6
Sep 2021 5 0.25 1.5
Oct 2021 6 0.2 0.3333
Nov 2021 6 0.0 0.2
Dec 2021 5 -0.25 -0.25
Jan 2022 4 -0.1111 -0.3846
Feb 2022 2 -0.5 -0.6
Mar 2022 3 0.5 -0.3333
Apr 2022 3 0.0 -0.25
May 2022 2 -0.3333 -0.4286
Jun 2022 2 0.0 -0.6
Jul 2022 2 0.0 -0.6
Aug 2022 5 1.5 0.25
Sep 2022 5 0.0 0.0
Oct 2022 5 0.0 -0.1667
Nov 2022 4 -0.2 -0.3333
Dec 2022 4 0.0 -0.1111
Jan 2023 2 -0.5 -0.5
Feb 2023 3 0.5 0.5
Mar 2023 4 0.3333 0.3333
Apr 2023 5 0.125 0.5
May 2023 5 0.1111 1.5
Jun 2023 4 -0.2 1.0
Jul 2023 4 0.0 1.0
Aug 2023 3 -0.25 -0.4
Sep 2023 3 0.0 -0.4
Oct 2023 8 1.6667 0.6
Nov 2023 8 0.0 1.0
Dec 2023 8 -0.0625 0.875
Jan 2024 6 -0.2 2.0
Feb 2024 4 -0.3333 0.3333
Mar 2024 6 0.375 0.375
Apr 2024 6 0.0909 0.3333
May 2024 3 -0.5 -0.4
Jun 2024 4 0.1667 -0.125
Jul 2024 3 -0.1429 -0.25
Aug 2024 3 -0.1667 -0.1667
Sep 2024 2 -0.2 -0.3333
Oct 2024 4 0.75 -0.5625
Nov 2024 5 0.2857 -0.4375
Dec 2024 5 0.1111 -0.3333
Jan 2025 3 -0.4 -0.5
Feb 2025 1 -0.6667 -0.75
Mar 2025 3 1.5 -0.5455
Apr 2025 5 1.0 -0.1667
May 2025 6 0.1 0.8333
Jun 2025 6 0.0909 0.7143
Jul 2025 3 -0.5 0.0
Aug 2025 2 -0.3333 -0.2
Sep 2025 3 0.5 0.5
Oct 2025 3 -0.1667 -0.2857
Nov 2025 7 1.8 0.5556
Dec 2025 7 0.0 0.4
Jan 2026 6 -0.1429 1.0
Feb 2026 6 0.0 5.0
Mar 2026 5 -0.1667 1.0