Zip Code: 21738 (Glenwood, 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 21738 Zip Code in September 2025 was 80.239.

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 21738 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: 21738 - Market Hotness: Trend of Supply Score
Zip Code: 21738 - Market Hotness: Trend of Supply Score
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Month Supply Score
September 2017 70.8778506716651
October 2017 62.25663992038316
November 2017 61.59090909090909
December 2017 74.7467578553455
January 2018 69.66111890916382
May 2018 76.78766375545851
June 2018 93.3523898158612
July 2018 62.56214889907664
August 2018 29.9182422074604
September 2018 13.657113872685771
October 2018 40.9376571141277
November 2018 81.30971211641885
May 2019 89.98422171914659
June 2019 93.97566059302092
July 2019 51.66764956424874
August 2019 55.19125683060109
September 2019 80.58402630052214
October 2019 81.35812032016526
November 2019 77.4248144772816
December 2019 52.33508270776589
September 2025 99.72413793103449
October 2025 80.2386980108499