Within the context of the Little House books only, the family moved three times. They moved from the Big Woods to Indian Territory in Little House on the Prairie. In On the Banks of Plum Creek, the Ingalls moved to Walnut Grove, Minnesota. Then they left Minnesota to settle in De Smet in the Dakota Territory, in present day South Dakota.
It is worth noting that not all the times the Ingalls family moved is depicted in the books. For example, their move to Burr Oak, Iowa was omitted completely as Laura found that time period very traumatic for the family, as it is where her baby brother died. They also returned to their house in the Big Woods outside Pepin, Wisconsin after they left Indian Territory (present day Kansas) before they then moved to Minnesota.