Cost of Living in Portsmouth

Portsmouth's cost of living runs genuinely elevated, driven by housing costs and a property tax rate that tracks close to Rhode Island's own statewide average.

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Housing costs above the national figure

Zillow's average home value (~$690,525) and a separate median sale price citation (~$685,000) both run well above the ~$408,776 national comparison figure.

A property tax rate close to the state average

Portsmouth's ~1.32% effective rate runs above the national figure and close to, though slightly below, Rhode Island's own ~1.35% statewide average.

Rhode Island's statewide tax structure applies

A flat 7% sales tax (no local add-on) and a graduated income tax topping out at 5.99% apply statewide.

Key takeaways

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Last reviewed: 2026-08-28. Independent research; not financial, tax, or legal advice -- confirm current figures with a local professional before making a decision.