Zip Code: 21871 (Westover, 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 21871 Zip Code in August 2022 was 71.453.

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 21871 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: 21871 - Market Hotness: Trend of Supply Score
Zip Code: 21871 - Market Hotness: Trend of Supply Score
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Month Supply Score
September 2017 28.978444236176195
October 2017 23.97835417055421
November 2017 6.843434343434343
December 2017 3.871217497903091
January 2018 4.632043312612794
April 2018 66.67359235404113
May 2018 51.21451965065502
June 2018 32.74612776706774
July 2018 21.727900820042617
August 2018 8.035258048032704
September 2018 2.1747400456505197
October 2018 0.6850175967823027
September 2022 71.45265997807942