Zip Code: 19539 (Mertztown, PA) - Market Hotness: Trend of Hotness Score (Realtor)
Updated on March 13, 2026.
According to data from Realtor.com, the market hotness: hotness score for the 19539 Zip Code in April 2019 was 88.005.
You can see similar for other Pennsylvania Zip Codes.
The chart and table below shows the trend of the market hotness: hotness score for the 19539 zip code.
Note: Hotness Score is an equally-weighted composite metric of a geography’s supply score and demand score.
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Related Topics: Zip Code: 19539 - Realtor House Inventory Topic List
Data Source: Realtor.
Zip Code: 19539 - Market Hotness: Trend of Hotness Score
Zip Code: 19539 - Market Hotness: Trend of Hotness Score
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| Month | Hotness Score |
|---|---|
| September 2018 | 71.07532335784936 |
| October 2018 | 62.0412267471091 |
| November 2018 | 61.420436570705476 |
| December 2018 | 63.389874068362886 |
| January 2019 | 52.53377265238879 |
| February 2019 | 51.39413501819931 |
| May 2019 | 88.00507649036152 |
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