1. Start with Duncan’s actual service area
The 2020–2024 ACS five-year population estimate for Duncan is 22,958, with a margin of error of 35. Your attribution design should therefore distinguish Duncan from Stephens County and from any broader Oklahoma service area your firm chooses to serve. A source record that says only “Google” or “Duncan” may be too broad for a budget decision. You need to know which page and channel produced the inquiry, then compare that information with the geography your firm actually accepts.
Recommended approach
Define the geographic fields and service-area rules you want reviewed before judging performance. Keep Duncan, Stephens County and any wider territory separate in reporting.
