The same is true for the collar counties of Cook in IL. DuPage, Kane, Lake, McHenry, and Will have all grown in every Census since 1840. McHenry is down by 0.5% since 2010, so the string might be broken this decade.
Do you think that's really true though? McHenry grew by almost 20% in the 2000s. It's hard to believe it's lost population, especially with the economy picking back up.
I know McHenry is where Sears moved their HQ after they left downtown, and then it became Sears-Kmart after noted Hedge Fund bloodsucker Eddie Lampert did his thing. He's been bleeding them dry ever since (not that it would have been easy even if a real retailer ran things). Must be one of the most depressing places to work at.