A total of almost 1,000 acres were listed for sale in Humboldt County, Iowa, recently; the value of all Humboldt County farms and ranches for sale was approximately $7 million. Humboldt County ranks 84th in the state for the total acreage of land currently advertised for sale. Among cities in Humboldt County with land for sale, Humboldt featured the most land for sale. From an economic perspective, manufacturing and related services are the main sectors in Humboldt County. Humboldt County is the 85th biggest county (435 square miles) in Iowa. It's located in the Western Iowa region of Iowa.