Start with the geography you actually serve
The 2020–2024 ACS five-year population estimate is 6,975, with a margin of error of 841. For attribution, the more useful question is how your firm defines a Roslyn Heights inquiry. A person may live there, work there, land on a service page while elsewhere, or contact your firm about a matter connected to another place.
Recommended approach
Decide which geographic facts belong in your reporting: the location associated with the inquiry, the page visited, the service requested and the jurisdiction your firm accepts. Review whether Roslyn Heights should be treated as a location in your marketing analysis or simply as one part of a broader Nassau County service area.
