1. Separate Monticello’s market boundary from the data you measure
Monticello is recorded as a municipality in Piatt County, Illinois. The 2020–2024 ACS five-year population estimate for Monticello city is 6,304, with a margin of error of 218. That is geographic and population context—not evidence of legal demand, search volume, competition, calls, cases or revenue. A useful attribution plan should therefore distinguish Monticello city from other places your firm serves and should not use the population figure as a forecast.
Recommended approach
Decide which geography belongs in each report: Monticello city, Piatt County, Illinois, or another service area your firm intentionally serves. Review leads by the geography represented in the inquiry record or marketing path, rather than applying one city label to every contact.
