Start with the service area, not the population estimate
Thermalito is recorded as a CDP in Butte County. The available Census estimate is useful for identifying the place and its geographic relationship, but it cannot tell you how many people search for a lawyer, how many firms advertise, or whether a particular case type is commercially viable. Local Service Ads also involve service areas and proximity considerations, so the relevant question is not simply whether your firm serves Thermalito. It is whether the areas you select reflect where your firm actually accepts matters and can respond appropriately.
Recommended approach
Bring a precise service-area discussion to the consultation. Separate Thermalito from the rest of Butte County and from any broader California or metropolitan coverage you may consider. Decide which locations are appropriate for each practice area, then review whether the profile and targeting choices match your capacity. Do not use the population estimate as a forecast of leads.
