Property Intelligence Report — Johnston, Iowa

Federal data on flood, climate, radon, air quality and more. Free preview for any address in Johnston. $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
3 events in past 10 years, max magnitude 3.3
Current Conditions
70°F
Partly Cloudy

Quick Stats

493,378
Population
$232,000
Median Home Value
$78,827
Median Income

Johnston at a Glance

Johnston sits in a genuinely solid economic position compared to most Midwestern communities. The median household income of $78,827 puts residents well above national averages, and that financial stability shows in the 67% owner-occupancy rate. Home values around $232,000 remain accessible for most buyers while reflecting the area's desirability. With over a third of the population holding bachelor's degrees or higher, you're looking at an educated community that tends to invest in schools and local infrastructure.

The natural hazard profile here is about as benign as it gets. Earthquake risk is essentially nonexistent—three minor tremors in a decade barely registers on any homeowner's radar. The real consideration is radon, which sits at Zone 1 (high potential). This isn't unusual for Iowa, but it means proper testing and mitigation systems are standard practice and shouldn't surprise anyone familiar with the region. Most homes handle this without major expense.

Demographically, Johnston reflects a prosperous suburban character—the kind of place where people are buying for stability rather than speculation. The combination of strong incomes, reasonable property values, and low natural disaster risk makes it attractive for families and long-term owners who value predictability over excitement.

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

Current Conditions

Tonight: 70°F — Partly Cloudy. Wind 3 to 8 mph E.

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