Property Intelligence Report — Portsmouth, New Hampshire

Federal data on flood, climate, radon, air quality and more. Free preview for any address in Portsmouth. $49 full report.

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Risk Scorecard

Radon Zone
Zone 1 — High
Predicted average indoor radon screening level >= 4 pCi/L. EPA strongly recommends radon testing and mitigation.
Earthquake Risk
Minimal
6 events in past 10 years, max magnitude 3.8
Current Conditions
55°F
Partly Cloudy

Quick Stats

315,169
Population
$424,100
Median Home Value
$110,225
Median Income

Portsmouth at a Glance

The greater Portsmouth area is experiencing strong residential demand, with a median home value around $424,100 reflecting its appeal to affluent buyers. The region pulls in a median household income of $110,225, which significantly exceeds national averages and suggests a stable, educated population. With 41.4% of residents holding bachelor's degrees or higher, you're looking at a community with strong professional credentials and likely good schools—important factors if that matters to your future plans.

The 78.5% owner-occupancy rate here is telling. It means most people aren't just passing through; they're committed long-term residents. That typically translates to neighborhoods that maintain their character and property values, though it also means less rental inventory if you're considering that angle. The market stays active year-round despite cold northeastern winters.

One thing to factor into your research: this region sits in EPA Radon Zone 1, which means elevated radon potential in basements. You'll want radon testing and mitigation systems factored into any inspection. Earthquake risk is genuinely minimal, so that's not a concern here. Overall, Portsmouth offers the stability of a prosperous, educated community with solid property appreciation history—just do your homework on radon before signing anything.

Analysis based on federal data from FEMA, EPA, USGS, Census Bureau and NOAA. Generated September 2026.

Current Conditions

Tonight: 55°F — Partly Cloudy. Wind 0 to 5 mph N.

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