Start with the geographic scope your website must serve
Marengo is a municipality in McHenry County, Illinois. The 2020–2024 ACS five-year estimate records 7,040 residents, with a margin of error of 441. That figure describes the city population; it does not establish website demand, legal need, search volume, leads or revenue. It does, however, give your firm a useful boundary for deciding which site areas, contact paths and location references need review. If your practice serves clients beyond Marengo, document those additional service areas separately rather than treating the city and county as interchangeable.
Recommended approach
Ask for a hosting review of the site as it exists today, including the Marengo pages and any broader McHenry County or Illinois service-area pages your firm actually maintains. Confirm which pages, forms and administrative areas are in scope. Hosting should support accurate local information; it should not be used as a reason to create unsupported location pages.
