$2,400,000
3 bd3 ba1,476 sqft
21 Mill St

The average Nantucket County, MA home value is $3,105,811, up 5.6% over the past year. (Updated on )
Zillow Home Value Index (ZHVI), built from the ground up by measuring monthly changes in property level Zestimates, captures both the level and home values across a wide variety of geographies and housing types.
Typical Home Values: $3,105,811
1-Year Value Change: +5.6%
(Data through April 30, 2026)
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