Dallas, Madison, Polk and Warren counties are faring well in the quest for economic development investments, according to research by financial technology company SmartAsset. The research focused on business establishment growth, GDP growth, new building permits and municipal bond investment. Dallas County led all counties in Iowa, with Polk third, Madison fourth and Warren fifth. Here’s a ranking of the top 10 Iowa counties:

Click here, then scroll down for a larger version of this table from SmartAsset.