Harbor Island Real Estate
Harbor Island Listings Summary
Harbor Island - Town vs. County Stats
Avg Price in Harbor Island: $3,385,300 / County Avg $1,318,300
Avg Sq. Ft. in Harbor Island: 2,281 / County Avg 2,404
Avg Price per/sqft in Harbor Island:$1484 / County Avg $548
Avg Year Built in Harbor Island: 1989 / County Avg 1988
Avg Days on Website in Harbor Island: 459 / County Avg 161
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Data Last Updated: September 22, 2026 12:25 AM UTC