Zip Code: 21830 (Hebron, 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 21830 Zip Code in January 2026 was 25.285.

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 21830 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: 21830 - Market Hotness: Trend of Supply Score
Zip Code: 21830 - Market Hotness: Trend of Supply Score
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Month Supply Score
September 2018 68.67233071265534
October 2018 61.87154348919055
November 2018 42.89149003479911
March 2019 79.42500865950815
September 2025 46.21415607985481
October 2025 45.273056057866185
November 2025 47.27075027183763
February 2026 25.284756442362067