1. Keep Coal City geography separate from the service area you actually manage
The U.S. Census Bureau records Coal City village as a municipality in Illinois, with recorded county relationships to Grundy County and Will County. Its 2020–2024 ACS five-year population estimate is 5,317, with a margin of error of 340. That figure describes the municipality; it does not establish legal demand, search activity, competition, call volume or likely case revenue. It also does not describe every person or household your firm may serve. For attribution, the useful geographic question is narrower: can your records distinguish a Coal City inquiry from an inquiry elsewhere in Grundy County, Will County or another Illinois location?
Recommended approach
Define the geographic fields and reporting views you want to review before changing budget or coverage decisions. Treat Coal City, each county relationship and the wider Illinois service area as distinct reporting questions rather than using the village population as a forecast.
