Zip Code: 21821 (Deal Island, 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 21821 Zip Code in October 2024 was 28.101.

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 21821 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: 21821 - Market Hotness: Trend of Supply Score
Zip Code: 21821 - Market Hotness: Trend of Supply Score
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Month Supply Score
September 2017 1.76194939081537
October 2017 4.397586614418112
November 2017 4.968434343434343
December 2017 2.3743467320472287
January 2018 0.9357663257803622
February 2018 0.9723572718433114
March 2018 1.606679295586894
April 2018 1.4682457233880464
May 2018 5.4994541484716155
June 2018 2.519444259788606
July 2018 4.649060502356815
August 2018 64.52478283086357
September 2018 39.89348212021304
October 2018 18.822272498743086
November 2018 6.358747231888643
December 2018 3.3474685170907224
January 2019 1.2586490939044481
February 2019 0.4807362131721722
March 2019 0.32559750606165566
April 2019 0.5485463521667581
May 2019 2.606846401865953
June 2019 0.8001075774894104
July 2019 3.9184850271934994
August 2019 7.669789227166277
September 2019 11.02301295687488
October 2019 38.67802736896463
November 2019 60.19398515818253
December 2019 34.28552448017007
January 2020 34.428631226454584
February 2020 87.88520519935739
March 2020 55.23354174328797
April 2020 24.165058631438328
May 2020 14.929829799940281
June 2020 5.468339217306392
July 2020 1.4925373134328357
August 2020 1.2738853503184715
November 2024 28.10056722367009