Zip Code: 19021 (Croydon, PA) - 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 19021 Zip Code in October 2025 was 87.858.

You can see similar for other Pennsylvania Zip Codes.

The chart and table below shows the trend of the market hotness: supply score for the 19021 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: 19021 - Market Hotness: Trend of Supply Score
Zip Code: 19021 - Market Hotness: Trend of Supply Score
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Month Supply Score
September 2017 53.764448609809435
October 2017 51.464825527150595
November 2017 77.3989898989899
December 2017 94.2318859281244
January 2018 85.54241026669341
February 2018 62.612862897624666
March 2018 82.88079702518768
April 2018 75.06752545190109
May 2018 75.9757096069869
June 2018 50.42212324669282
July 2018 69.84567701943566
August 2018 85.46244251405211
September 2018 87.60461577479077
October 2018 59.96103569632981
November 2018 81.7462828218918
December 2018 74.9100488306348
January 2019 91.10378912685337
February 2019 82.20589245244145
March 2019 64.19120193972982
April 2019 44.45282501371366
May 2019 45.24936543870481
June 2019 98.78975324413366
July 2019 75.32271803944695
August 2019 70.7455113192818
September 2019 77.1933217301618
October 2019 90.86625355021947
November 2019 93.47741179533915
March 2020 89.57705038617138
April 2020 84.34763247736382
May 2020 55.48671245147805
June 2020 41.891384361150756
November 2025 87.85791953606379