1. Separate Gretna geography from attribution assumptions
The 2020–2024 ACS 5-year population estimate is 17,389, with a margin of error of 31.
Recommended approach
During a consultation, ask Bosseo how Gretna and Jefferson Parish will be represented in the records you review. Decide whether your firm needs to distinguish a Gretna landing page, a broader Jefferson Parish page, a referral, a paid source or another path. The useful question is not how large the place is; check whether your records can show which source and response path produced a qualified inquiry and what happened next.
