1. Start with the Arroyo Grande service area, not a population assumption
Arroyo Grande is a city in San Luis Obispo County, California. The Census population estimate helps identify the municipality and its scale, but it cannot establish legal demand, competition, search volume, call volume, language preference, staffing requirements or revenue. Attribution therefore should not be justified by a population forecast. It should be evaluated against the geographic questions your firm already needs to answer: which inquiries identify Arroyo Grande, which service pages they reach, and whether those inquiries progress through your intake and matter process.
Recommended approach
Ask Bosseo to show how the proposed attribution view would distinguish geography available during intake from the source journey. Keep Arroyo Grande, San Luis Obispo County and any wider service area as separate fields or reporting questions rather than treating them as interchangeable. Review the result with your intake and marketing owners before using it for budget decisions.
