1. Start with the geographic question, not a guessed market size
Newcastle is recorded by the U.S. Census Bureau as a municipality in King County, Washington. Its 2020–2024 ACS five-year population estimate is 12,989, with a margin of error of 26. That is geographic and eligibility context; it does not establish legal demand, competition, search activity, language preference, lead volume or revenue. Your attribution decisions should therefore begin with the actual service area and the inquiries your firm receives, rather than a population-based forecast. The useful question is whether your records can distinguish a Newcastle inquiry from another service location and connect that inquiry to a measurable journey.
Recommended approach
Confirm which geographic labels matter to your practice, including Newcastle and the wider areas you intentionally serve. Then review whether those labels can be compared with source, landing page, intake answers and matter outcome without claiming that any location produces demand.
