Iowa Territory - December 28, 1837 The Newberry Library Were your ancestors so amazing that they lived in two different states in the same house? Probably not, it’s more likely the culprit of changing land boundaries.
Between 1836 and 1855 most all 99 Iowa counties were officially formed. Many of these county boundaries changed during that time. If your ancestors were some of the first to the area, their records may be in more counties than you think. In 1836, Dubuque County made up two-thirds of the state and included what would ultimately become Polk County.