Polk County, IA
501,089 residents · 572 sq mi · 875.4/sq mi · 5% rural
About Polk County
Polk County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 492,401, and was estimated to be 516,546 in 2025, making it the most populous county in Iowa. The county seat and the largest city is Des Moines, which is also the capital city of Iowa. Polk County is included in the Des Moines–West Des Moines, IA Metropolitan Statistical Area.
Prepper Assessment
Living in this area features a mix of urban and rural settings, with a population density of 875.4 people per square mile. The climate is classified as humid, with an annual mean temperature of 49.8°F and significant rainfall averaging 35.8 inches per year. The growing season is typical for USDA zone 7a, allowing for a variety of crops, but the limited rural space (only 4% of the county) may restrict self-sufficient living for those seeking larger homesteads.
Natural hazards pose considerable risks, with strong winds, tornadoes, and hail ranking among the highest threats at FEMA percentiles of 99, 98, and 98, respectively. The county's violence percentile is relatively low at 12, suggesting a safer environment, but the high population density (95th percentile) may lead to urban-related issues. The median home price of $232,000 could be a barrier for some, particularly in a market that is heavily influenced by the metropolitan economy.
This county may suit individuals or families who appreciate the amenities of urban living while still having access to rural areas. Those who thrive here are likely comfortable in a densely populated environment and can manage the risks associated with severe weather. However, homesteaders seeking expansive land for self-sufficiency may find the limited rural space and high property costs to be significant drawbacks.