1. Start with Riverdale’s actual service geography
Riverdale is recorded as a village municipality in Cook County, Illinois. The available Census record gives the municipality a 2020–2024 ACS five-year population estimate of 10,340, with a margin of error of 293. It does not establish how many people seek legal services, which practice areas they need, how they search, or whether they will contact your firm. That distinction matters when you evaluate attribution. A Riverdale page, a Cook County page, and a broader Illinois page may represent different audiences and different service decisions. Attribution should help you see which geographic entry points are associated with inquiries and matters, rather than treating the municipality’s population as a forecast.
Recommended approach
Define the geographic labels your firm already uses in intake and reporting. Ask whether Riverdale inquiries need to be separated from broader Cook County or Illinois inquiries, and review whether landing-page, referrer and case-outcome data can preserve that distinction without turning population into a demand claim.
