Zip Code: 19539 (Mertztown, 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 19539 Zip Code in April 2019 was 95.562.
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 19539 zip code.
Note: Supply Score is an index representing the metro's median days on market ranking compared to other metros.
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Related Topics: Zip Code: 19539 - Realtor House Inventory Topic List
Data Source: Realtor.
Zip Code: 19539 - Market Hotness: Trend of Supply Score
Zip Code: 19539 - Market Hotness: Trend of Supply Score
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| Month | Supply Score |
|---|---|
| September 2018 | 57.608419984783154 |
| October 2018 | 39.303670186023126 |
| November 2018 | 32.86301803226827 |
| December 2018 | 43.97969673605757 |
| January 2019 | 22.29324546952224 |
| February 2019 | 14.669322161939427 |
| May 2019 | 95.5615009947177 |
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