Start with Millbrae’s actual service area
The U.S. Census Bureau records Millbrae as a municipality in San Mateo County, California, with a 2020–2024 ACS five-year population estimate of 22,689 and a margin of error of 27. That is geographic and population context, not evidence of search demand, competition, legal need, lead volume or revenue. Attribution should therefore be configured around the geographic scope your firm actually serves rather than treating the city estimate as a forecast.
Recommended approach
Use the consultation to define which inquiries count as Millbrae matters, which surrounding areas belong in the same reporting view, and whether location should be recorded at intake. Keep the distinction between Millbrae, San Mateo County, the wider Bay Area and California when reviewing channel performance.
