Population of the Union States in the American Civil War 1860-1870

This graph shows the total population of the Union states of the US, from the censuses collected directly before and after the American Civil War. From the graph we can see that the majority of states saw grew in this time, despite the effects of the war. The only two states without growth were Maine and New Hampshire, where, along with the rest of the north-east, many people migrated south and westwards from the original colonies. The state with the largest growth was Illinois, which grew by over 0.8 million people in this ten year period, particularly in Chicago where the population skyrocketed during this time.