Zip Code: 21045 (Columbia, 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 21045 Zip Code in February 2026 was 45. The month over month percentage change (MoM) was 0.125%, and the year over year percentage change (YoY) was 0.5254%.

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

The chart below shows the trend of active listing count in the 21045 zip code. The table below shows the trend, and the MoM and YoY percentage changes.

Data Source: Realtor.
Zip Code: 21045 - Trend of Active Listing Count of Houses
Zip Code: 21045 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 116
Sep 2016 106
Oct 2016 108
Nov 2016 114
Dec 2016 117
Jan 2017 87
Feb 2017 74
Mar 2017 66
Apr 2017 64
May 2017 75
Jun 2017 85
Jul 2017 91
Aug 2017 78 -0.1381 -0.3276
Sep 2017 76 -0.0256 -0.283
Oct 2017 83 0.0921 -0.2315
Nov 2017 92 0.1024 -0.1974
Dec 2017 91 -0.0109 -0.2265
Jan 2018 74 -0.1823 -0.1494
Feb 2018 52 -0.3041 -0.3041
Mar 2018 45 -0.1262 -0.313
Apr 2018 53 0.1778 -0.1654
May 2018 70 0.3113 -0.0733
Jun 2018 75 0.0719 -0.1183
Jul 2018 89 0.1946 -0.0166
Aug 2018 88 -0.0112 0.1282
Sep 2018 95 0.0795 0.25
Oct 2018 106 0.1158 0.2771
Nov 2018 94 -0.1132 0.0273
Dec 2018 90 -0.0479 -0.011
Jan 2019 78 -0.1285 0.0541
Feb 2019 65 -0.1731 0.2524
Mar 2019 53 -0.1783 0.1778
Apr 2019 57 0.0755 0.0755
May 2019 68 0.1842 -0.0288
Jun 2019 79 0.1704 0.0604
Jul 2019 73 -0.0759 -0.1798
Aug 2019 66 -0.0959 -0.25
Sep 2019 67 0.0152 -0.2947
Oct 2019 63 -0.0672 -0.4104
Nov 2019 57 -0.088 -0.3936
Dec 2019 61 0.0702 -0.3184
Jan 2020 40 -0.3443 -0.4872
Feb 2020 39 -0.0375 -0.4031
Mar 2020 39 0.013 -0.2642
Apr 2020 39 -0.0128 -0.3246
May 2020 35 -0.0909 -0.4815
Jun 2020 42 0.2 -0.4684
Jul 2020 38 -0.1071 -0.4863
Aug 2020 32 -0.1467 -0.5152
Sep 2020 30 -0.0625 -0.5522
Oct 2020 36 0.1833 -0.432
Nov 2020 27 -0.2394 -0.5263
Dec 2020 27 -0.0185 -0.5656
Jan 2021 19 -0.283 -0.525
Feb 2021 19 0.0 -0.5065
Mar 2021 18 -0.0789 -0.5513
Apr 2021 20 0.1143 -0.4935
May 2021 24 0.2051 -0.3286
Jun 2021 28 0.1915 -0.3333
Jul 2021 29 0.0357 -0.2267
Aug 2021 28 -0.0345 -0.125
Sep 2021 32 0.125 0.05
Oct 2021 38 0.1905 0.0563
Nov 2021 34 -0.0933 0.2593
Dec 2021 27 -0.2206 0.0
Jan 2022 13 -0.5283 -0.3421
Feb 2022 14 0.12 -0.2632
Mar 2022 12 -0.1429 -0.3143
Apr 2022 18 0.4583 -0.1026
May 2022 27 0.5429 0.1489
Jun 2022 24 -0.1111 -0.1429
Jul 2022 25 0.0417 -0.1379
Aug 2022 28 0.12 0.0
Sep 2022 37 0.3036 0.1587
Oct 2022 36 -0.0274 -0.0533
Nov 2022 33 -0.0704 -0.0294
Dec 2022 32 -0.0455 0.1887
Jan 2023 27 -0.1429 1.16
Feb 2023 20 -0.2778 0.3929
Mar 2023 18 -0.1026 0.4583
Apr 2023 14 -0.2 -0.2
May 2023 15 0.0714 -0.4444
Jun 2023 13 -0.1333 -0.4583
Jul 2023 11 -0.1538 -0.56
Aug 2023 13 0.1818 -0.5357
Sep 2023 18 0.3462 -0.5205
Oct 2023 13 -0.2571 -0.6338
Nov 2023 16 0.1923 -0.5303
Dec 2023 21 0.3226 -0.3492
Jan 2024 16 -0.2195 -0.4074
Feb 2024 13 -0.2188 -0.359
Mar 2024 13 0.04 -0.2571
Apr 2024 10 -0.2308 -0.2857
May 2024 19 0.85 0.2333
Jun 2024 21 0.1081 0.5769
Jul 2024 21 0.0244 0.9091
Aug 2024 19 -0.0952 0.4615
Sep 2024 19 0.0 0.0857
Oct 2024 32 0.6842 1.4615
Nov 2024 37 0.1406 1.3548
Dec 2024 32 -0.1233 0.561
Jan 2025 28 -0.1406 0.7188
Feb 2025 26 -0.0727 1.04
Mar 2025 30 0.1569 1.2692
Apr 2025 38 0.2881 2.8
May 2025 45 0.1711 1.4054
Jun 2025 38 -0.1461 0.8537
Jul 2025 44 0.1579 1.0952
Aug 2025 50 0.125 1.6053
Sep 2025 51 0.0303 1.6842
Oct 2025 53 0.0392 0.6563
Nov 2025 54 0.0189 0.4795
Dec 2025 58 0.0741 0.8125
Jan 2026 45 -0.2328 0.6182
Feb 2026 40 -0.1011 0.5686
Mar 2026 45 0.125 0.5254