McHenry County is in Northern Illinois. Of the 102 counties in the Inland Empire, 391,091-acre McHenry County ranks 36th by size. Recent listings of farms for sale in McHenry County, Illinois, totals around 1,000 acres and a combined market value of around $30 million. The most common type of land for sale by combined acreage in McHenry County is undeveloped land. The average price of farms for sale in McHenry County was $2 million. Farms for sale in McHenry County support livestock including horses, cattle, goats, sheep and pig. Browse all Illinois farms for sale on the Land Network to find the farm, cattle operation, hobby farm or other farm property that's right for your future commercial or individual needs.