Dewees Island Dewees Island currently has 9 properties for sale listed on MLS. Dewees Island has an average sq foot of 3,317. All the MLS Listings in Dewees Island totaling 9, are priced from $350,000 to $2,495,000 with an average median home for sale priced around $1,052,222. The highest square foot 4,602 to the lowest at 2,242.
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