Zip Code: 21231 (Baltimore, MD) - Market Hotness: Trend of Supply Score (Realtor)
Updated on March 13, 2026.

According to data from Realtor.com, the market hotness: supply score for the 21231 Zip Code in February 2026 was 53.947.

You can see similar for other Maryland Zip Codes.

The chart and table below shows the trend of the market hotness: supply score for the 21231 zip code.

Note: Supply Score is an index representing the metro's median days on market ranking compared to other metros.

Data Source: Realtor.
Zip Code: 21231 - Market Hotness: Trend of Supply Score
Zip Code: 21231 - Market Hotness: Trend of Supply Score
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Month Supply Score
September 2017 61.45579506404248
October 2017 57.10020526217578
November 2017 63.33333333333333
December 2017 41.970449706432674
January 2018 42.89151794666132
February 2018 59.91804417280178
March 2018 61.173086367782226
April 2018 86.33561881016692
May 2018 74.4132096069869
June 2018 59.3299208934388
July 2018 36.39826951636857
August 2018 38.96908533469596
September 2018 30.490743089018512
October 2018 37.77023629964806
November 2018 51.83169882948434
December 2018 49.15188897455667
January 2019 38.510708401976935
February 2019 39.64700226632786
March 2019 44.46830620020783
April 2019 52.48902907295666
May 2019 62.66721547643548
June 2019 47.64338062260472
July 2019 39.099665814822096
August 2019 41.523549310434554
September 2019 38.67079223876749
October 2019 40.130389878647044
November 2019 41.04934253352428
December 2019 42.45665315883877
January 2020 36.702944049113995
February 2020 40.45567401781802
March 2020 26.42883413019492
April 2020 68.76206026421255
May 2020 56.86025679307256
June 2020 51.93419965447307
July 2020 25.53553476142603
August 2020 43.17675159235669
September 2020 46.963892737794446
October 2020 34.44574878416905
November 2020 52.5010508617066
December 2020 52.50396755422324
January 2021 34.740719750637574
February 2021 30.23807069978357
March 2021 34.81532147742818
April 2021 32.922002328288706
May 2021 32.0554272517321
June 2021 39.76640104792054
July 2021 35.32855556677097
August 2021 27.74490466798159
September 2021 48.7027765134274
October 2021 36.080057699242694
November 2021 27.46542940320233
December 2021 33.33333333333333
January 2022 26.91841902455136
February 2022 11.851114154114278
March 2022 16.773675762439808
April 2022 21.904884983199793
May 2022 44.26498127340824
June 2022 40.49244775501759
July 2022 26.840789108085577
August 2022 41.13475177304964
September 2022 49.725992749346595
October 2022 43.37818397224338
November 2022 32.265046199950056
December 2022 35.563290601918666
January 2023 39.201209749154955
February 2023 56.081663950924955
March 2023 46.48805940196669
April 2023 31.537356321839084
May 2023 58.882941117058884
June 2023 55.84786678490492
July 2023 35.85510800867843
August 2023 41.00425994743044
September 2023 51.83278601224816
October 2023 58.722967775023506
November 2023 45.39151023169288
December 2023 49.12073047007102
January 2024 40.019422618522114
February 2024 54.06012924978927
March 2024 54.4846690228293
April 2024 90.21891010712622
May 2024 88.34117221418234
June 2024 89.20739077879468
July 2024 67.04002635480151
August 2024 64.67186119367018
September 2024 77.35613336456625
October 2024 51.24855935459086
November 2024 54.38448566610455
December 2024 52.300223472297134
January 2025 42.90407358738502
February 2025 37.71168228315997
March 2025 48.87373780961422
April 2025 61.26429051782112
May 2025 69.99837080482241
June 2025 62.9500580720093
July 2025 46.39957907396271
August 2025 74.95563442768412
September 2025 59.23049001814882
October 2025 74.37974683544304
November 2025 74.18629938383472
December 2025 60.78273000954548
January 2026 48.35309617918313
February 2026 49.44664350916875
March 2026 53.947260330239054