McHenry County Now Sixth Largest County, Surpasses Winnebago

The ten largest counties in Illinois.

Used to be that Rockford’s Winnebago County was a big brother to McHenry County.

No more.

Winnebago County’s official population is now 295,266.

McHenry’s is now 308,760.

That’s an increase of 18.7% over 2000’s 260,077.

From the over 200,000 person lead that Kane County has over McHenry County, it does not appear that local officials will have bragging rights about being “Number 5” for a long, long time…if ever.

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