21821, Deal Island, MD Housing Market

ZIP code 21821's median home value is $210K, up 8.9% over the past year. Homes here sell in a median 84 days. Its PropertyIQ Score of 30 sits below the state average of 50, marking a market positioned to lag its state over the next three years.

PropertyIQ provides ZIP-code-level market intelligence for 21821, Deal Island, MD — going deeper than metro or county averages to reveal neighborhood-specific demand dynamics. By tracking Zillow home-value momentum alongside Realtor.com market-flow signals — median days on market and the share of listings with price cuts — specifically within ZIP code 21821, PropertyIQ predicts which micro-markets within MD are positioned to outperform.

South Atlantic ZIP codes benefit from sustained migration inflows, but hyperlocal performance varies widely between neighborhoods. PropertyIQ's ZIP-level scoring helps distinguish between ZIP codes riding a temporary wave and those with durable, block-by-block demand fundamentals. Within the South Atlantic, ZIP code 21821's PropertyIQ Score of 30 runs below the South Atlantic norm.

For 21821, Deal Island, MD, PropertyIQ updates a hyperlocal score each month from four signals: twelve-month and three-month Zillow home-value momentum, Realtor.com median days on market, and the Realtor.com share of price-reduced listings. The score is computed across all ZIP codes nationally and calibrated so 50 equals the state average, so a value above 50 means this ZIP's demand dynamics read stronger than its state. ZIP-level analysis captures neighborhood variation that county and metro scores smooth over.

Explore 21821, Deal Island, MD's full market profile including ZIP-level score trends, home value data, and comparisons with neighboring ZIP codes. Use the interactive map to visualize demand signals across the area and identify hyperlocal investment opportunities.