1. Start with the service area, not a population assumption
Boiling Springs is a CDP in Spartanburg County, South Carolina. A firm may serve the CDP, other parts of the county, nearby communities or a broader South Carolina area, but those are different geographic decisions. The Census population estimate can identify the place being evaluated; it cannot tell you how many people search for a lawyer, which practice areas they need or how many firms compete for those searches. Bosseo’s LSA page describes category and geography targeting as part of program management.
Recommended approach
Bring a precise service-area map to the consultation. Separate locations the firm accepts from locations it merely mentions online, then decide which practice-area and geography combinations are worth testing. Keep Boiling Springs and Spartanburg County distinct in internal reporting so a local inquiry is not mistaken for countywide demand.
