Zip Code: 91978 (Spring Valley, CA) - 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 91978 Zip Code in November 2025 was 60.783.

You can see similar for other California Zip Codes.

The chart and table below shows the trend of the market hotness: supply score for the 91978 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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Zip Code: 91978 - Market Hotness: Trend of Demand Score (Realtor)

Related Topics: Zip Code: 91978 - Realtor House Inventory Topic List

Data Source: Realtor.

Zip Code: 91978 - Market Hotness: Trend of Supply Score

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