Yes, it was. At that time, Chicago had more Swedes than any city in the world next to Stockholm, I think.
My grandfather, Karl Henriksson, came over as a young man in 1902, his name was changed to Charles Henrickson (I'm named after him), and he settled in Chicago. He was a house painter. They say that the Swedes built Chicago.
When I go up to Chicago, I like to stop in Andersonville (the Swedish shopping district on the north side) and get some Swedish food to take back to St. Louis (a Swede-deficient city).
Everyone thinks of Minneapolis as the Swedish capital of America, but there are just as many (if not more) Swedes in the Chicago area.