1. Start with the geographic relationship, not a population assumption
Markham’s recorded county relationship is Cook County. For a firm serving Markham, that distinction matters when reviewing landing pages, referral records and case-location fields: Markham, Cook County and the wider Illinois service area are not interchangeable labels. The Census population estimate is useful context for defining the municipality, but it cannot tell you how many people search for a lawyer, which practice areas are active, or which channel produces qualified inquiries. Lead Attribution is most useful when your records preserve the geographic context that your firm actually uses.
Recommended approach
Before a consultation, decide whether you need to distinguish Markham inquiries from other Cook County matters and from inquiries elsewhere in Illinois. Ask to review how a lead’s source, landing page, intake answers and outcome would be connected without treating population as a demand forecast.
