1. Start with the geography your firm can actually serve
The U.S. Census Bureau records South Portland as a municipality in Cumberland County, Maine, with a 2020–2024 ACS five-year population estimate of 26,930 and a margin of error of 31. That establishes a geographic reference point. It does not establish legal demand, competition, search volume, leads, cases or revenue. It also does not mean that every household or individual in the city is a prospective client. For your firm, the relevant question is narrower: do you accept matters from South Portland, and which services can you responsibly offer there? Bosseo states that its programmatic system can be scoped statewide or to counties selected by the firm.
Recommended approach
Treat South Portland as one location in a serviceable footprint. Before choosing statewide coverage or a Cumberland County focus, list the services you actively offer, the client types you accept and any geographic limits imposed by your practice. Ask whether a page for South Portland would add useful guidance rather than merely repeat a city name.
