County of mchenry

History & Founding

Located in north-central Illinois, this county boasts a rich history interwoven with the state's development. Established in 1830, it was carved from Cook County and initially named "Lake County," reflecting the abundant waterways. The name was later changed to honor U.S. Revolutionary War veteran and former Illinois Congressman, James C. McHenry. McHenry played a significant role in the Northwest Ordinance and the early governance of the region. A fascinating historical anecdote relates to the construction of the Jane Addams Memorial Tollway (I-90), which bisected the county. During its construction in the 1950s, a significant archaeological find occurred – a Native American burial ground, prompting careful excavation and preservation efforts that offered valuable insights into the area’s pre-settlement inhabitants. The county’s early years were marked by agricultural expansion and the influx of settlers drawn by fertile land and opportunities.

Geography & Landscape

The county’s geography is characterized by gently rolling hills and a landscape sculpted by glacial activity. Situated within the Chicago metropolitan area, it borders Wisconsin to the north. The terrain is primarily farmland interspersed with residential and commercial development. Several rivers, including the Fox River and the Kishwaukee River, flow through the county, providing recreational opportunities and contributing to the area’s scenic beauty. Numerous lakes, such as Lake Geneva (partially within the county) and Algonquin Lake, enhance the landscape. The climate is typically continental, experiencing warm summers and cold winters, with average annual rainfall distributed throughout the year. The land area encompasses approximately 604 square miles.

Economy & Communities

The county is comprised of 27 distinct cities and towns, creating a diverse community with varying characteristics. Major population centers include Crystal Lake, McHenry, Algonquin, and Woodstock. The economy is a blend of agriculture, industry, and service sectors. While agriculture remains important, particularly corn and soybean production, the area has seen substantial growth in manufacturing, technology, and healthcare. Notable employers include Northwestern Medicine, Centegra Health System, and various manufacturing companies. The overall character of the area is predominantly suburban, experiencing significant residential development driven by its proximity to Chicago and the quality of its schools. The county serves as a desirable residential location for commuters and families seeking a balance of rural charm and urban accessibility.

Points of Interest

Points of interest abound within the county. The McHenry County Historical Society Museum in Richmond preserves local history, while the Woodstock Opera House, a beautifully restored Victorian-era building, hosts performances and events. Numerous county parks, including Veteran’s Acres Park and Glacial Park Conservation Area, offer recreational opportunities. The annual Woodstock Square Fest is a popular community celebration. The county is also the birthplace of Jane Addams, a pioneering social worker and Nobel Peace Prize laureate, whose legacy is commemorated through various initiatives. The county holds the distinction of having a remarkably high number of locally-owned businesses, contributing to its unique character and economic vitality.