 About 3.20% of families and 5.10% of the population were below the poverty line, including 5.40% of those under age 18 and 8.00% of those age 65 or over.Chisago County is strongly influenced by the German, Swedish and Norwegian immigrants who settled there in the mid-19th century.It provided the setting for much of Swedish author Vilhelm Moberg's suite of novels "The Emigrants" in the 1950s, and Moberg engaged in both archival and oral history research for his books to recreate the early Swedish immigration in the area.