The median home value in Johnston, IA is $403,139 as of 2026-06-30, up 0.55% from a year earlier.
Median Home Value
$403,139
Year-over-Year
+0.55%
Population
24,819
Johnston ranks #2 of 72 Iowa cities tracked here by median home value, and sits 85.6% above the state's city median of $217,178. It sits in Polk County, where the county-wide median is $283,819.
Johnston police recorded a violent crime rate of 77 per 100,000 residents in 2024 — lower than most cities that report to the FBI. Property crime runs at 749 per 100,000.
Reported by the city's own police department to the FBI's Uniform Crime Reporting Program (what this covers).
The median home value in Johnston is $403,139. That's up 0.55% from a year earlier. That is about 85.6% above the typical county in Iowa.
Homes in Johnston are more expensive than Polk County as a whole, where the median is $283,819 — a difference of about 42.0%.
Johnston police reported 77 violent crimes per 100,000 residents, covering a population of about 24,819. Crime rates are one input among many — they vary block to block within a city, and this figure is a citywide average.