1. Start with Derby’s actual service boundary
Derby is a municipality in Sedgwick County, Kansas. The 2020–2024 American Community Survey 5-year population estimate for Derby city is 26,062, with a margin of error of 38. That is geographic and population context only; it does not establish legal demand, search volume, competition, lead volume, or revenue. Attribution should therefore be configured around the areas and matters your firm actually accepts, rather than treating the city population as a forecast. Decide whether an inquiry should be recorded as Derby, another Sedgwick County community, or outside your service boundary. Then decide which case types require separate reporting.
Recommended approach
Bring your accepted geography, practice areas, consultation criteria, and outcome definitions to the review. Ask to see how those distinctions would appear in a lead journey and how a managing partner could compare them without treating population as a demand estimate.
