1. Start with Erwin’s actual service boundary
Erwin is recorded as a municipality in Unicoi County, Tennessee. The 2020–2024 ACS five-year estimate records 5,988 people, with a margin of error of 27. That figure describes the town’s population; it does not establish legal demand, search volume, competition, lead volume or revenue. Your attribution plan should therefore preserve the distinction between an inquiry associated with Erwin, an inquiry from elsewhere in Unicoi County and a matter your firm accepts from a wider Tennessee service area.
Recommended approach
Before reviewing marketing performance, decide which geographic fields your team needs to distinguish: Erwin, Unicoi County, other Tennessee locations and any broader area your firm serves. Do not treat the town population as a forecast. Use it only as a reason to make geographic reporting precise.
