Top 25 Most Irish Counties in Illinois

Illinois certainly could use a little luck o’ the Irish, and that might not be too hard to find — according to the U.S. Census, more than 33 million people in the U.S. claimed Irish ancestry in 2013. That’s seven times higher than the population of Ireland itself!

And Illinois has plenty of Irish heritage too. In 2010, 1.6 million people in Illinois said they had some Irish background.

Where do all those people live in the state and which county has the most?

Here are the Top 25 "most Irish" counties in Illinois, according to most recent census data.

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