Zip Code: 21561 (Swanton, 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 21561 Zip Code in February 2026 was 20. The month over month percentage change (MoM) was 0.0%, and the year over year percentage change (YoY) was 0.1765%.

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

The chart below shows the trend of active listing count in the 21561 zip code. The table below shows the trend, and the MoM and YoY percentage changes.

Data Source: Realtor.
Zip Code: 21561 - Trend of Active Listing Count of Houses
Zip Code: 21561 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 85
Sep 2016 84
Oct 2016 83
Nov 2016 79
Dec 2016 68
Jan 2017 61
Feb 2017 52
Mar 2017 47
Apr 2017 48
May 2017 48
Jun 2017 53
Jul 2017 60
Aug 2017 60 0.0084 -0.2941
Sep 2017 65 0.075 -0.2275
Oct 2017 67 0.0388 -0.1879
Nov 2017 61 -0.097 -0.2342
Dec 2017 50 -0.1736 -0.2647
Jan 2018 37 -0.26 -0.3934
Feb 2018 33 -0.1216 -0.3689
Mar 2018 34 0.0462 -0.2766
Apr 2018 38 0.1176 -0.2
May 2018 40 0.0526 -0.1667
Jun 2018 43 0.075 -0.1887
Jul 2018 52 0.2093 -0.1261
Aug 2018 54 0.0385 -0.1
Sep 2018 62 0.1481 -0.0388
Oct 2018 64 0.0323 -0.0448
Nov 2018 62 -0.0313 0.0248
Dec 2018 57 -0.0887 0.13
Jan 2019 53 -0.0619 0.4324
Feb 2019 44 -0.1698 0.3538
Mar 2019 45 0.0114 0.3088
Apr 2019 49 0.1011 0.2895
May 2019 53 0.0816 0.325
Jun 2019 62 0.1698 0.4419
Jul 2019 69 0.1129 0.3269
Aug 2019 71 0.0217 0.3056
Sep 2019 70 -0.0071 0.129
Oct 2019 70 0.0 0.0938
Nov 2019 69 -0.0143 0.1129
Dec 2019 67 -0.029 0.1858
Jan 2020 52 -0.2239 -0.0189
Feb 2020 43 -0.1827 -0.0341
Mar 2020 43 0.0118 -0.0337
Apr 2020 45 0.0349 -0.0918
May 2020 48 0.0674 -0.1038
Jun 2020 46 -0.0316 -0.2581
Jul 2020 44 -0.0543 -0.3696
Aug 2020 38 -0.1264 -0.461
Sep 2020 26 -0.3158 -0.6286
Oct 2020 21 -0.2115 -0.7071
Nov 2020 19 -0.0732 -0.7246
Dec 2020 12 -0.3684 -0.8209
Jan 2021 11 -0.0833 -0.7885
Feb 2021 11 0.0 -0.7412
Mar 2021 6 -0.5 -0.8721
Apr 2021 8 0.4545 -0.8202
May 2021 17 1.0625 -0.6526
Jun 2021 18 0.0909 -0.6087
Jul 2021 21 0.1389 -0.5287
Aug 2021 22 0.0732 -0.4211
Sep 2021 18 -0.2045 -0.3269
Oct 2021 18 0.0 -0.1463
Nov 2021 17 -0.0286 -0.1053
Dec 2021 14 -0.1765 0.1667
Jan 2022 15 0.0714 0.3636
Feb 2022 12 -0.2 0.0909
Mar 2022 10 -0.2083 0.7273
Apr 2022 8 -0.2105 -0.0625
May 2022 10 0.3333 -0.3939
Jun 2022 12 0.15 -0.3611
Jul 2022 18 0.5217 -0.1463
Aug 2022 17 -0.0286 -0.2273
Sep 2022 20 0.1765 0.1429
Oct 2022 21 0.05 0.2
Nov 2022 23 0.0952 0.3529
Dec 2022 25 0.087 0.7857
Jan 2023 21 -0.16 0.4
Feb 2023 20 -0.0476 0.6667
Mar 2023 18 -0.125 0.8421
Apr 2023 16 -0.1143 1.0667
May 2023 19 0.2258 0.9
Jun 2023 19 -0.0263 0.6087
Jul 2023 23 0.2432 0.3143
Aug 2023 22 -0.0435 0.2941
Sep 2023 23 0.0227 0.125
Oct 2023 19 -0.1556 -0.0952
Nov 2023 19 0.0 -0.1739
Dec 2023 18 -0.0526 -0.28
Jan 2024 16 -0.1111 -0.2381
Feb 2024 16 0.0 -0.2
Mar 2024 16 -0.0313 -0.1143
Apr 2024 18 0.1613 0.1613
May 2024 20 0.1111 0.0526
Jun 2024 30 0.475 0.5946
Jul 2024 34 0.1525 0.4783
Aug 2024 38 0.1029 0.7045
Sep 2024 34 -0.0933 0.5111
Oct 2024 37 0.0735 0.9211
Nov 2024 35 -0.0411 0.8421
Dec 2024 32 -0.0857 0.7778
Jan 2025 27 -0.1719 0.6563
Feb 2025 22 -0.1887 0.3438
Mar 2025 17 -0.2093 0.0968
Apr 2025 18 0.0588 0.0
May 2025 26 0.4444 0.3
Jun 2025 37 0.4231 0.2542
Jul 2025 42 0.1351 0.2353
Aug 2025 45 0.0595 0.1867
Sep 2025 43 -0.0337 0.2647
Oct 2025 36 -0.1744 -0.0274
Nov 2025 32 -0.0986 -0.0857
Dec 2025 31 -0.0313 -0.0313
Jan 2026 23 -0.2581 -0.1321
Feb 2026 20 -0.1304 -0.0698
Mar 2026 20 0.0 0.1765