Hi @lefaivre, welcome to the iNaturalist Forum. The locations outside of the county that you are seeing on the map and in the data are the “obscured”, randomized localities. Observations can be obscured manually by the observer or in cases where the species is set to automatically obscure (usually because it’s sensitive to things like overharvesting). More info here: https://www.inaturalist.org/pages/help#geoprivacy
Check your exported data for items in the columns “geoprivacy” and “taxon_geoprivacy” that say “obscured” to exclude those datapoints, if desired.
Also, here’s a search that shows all observations in that county (not necessary to create a project):
https://www.inaturalist.org/observations?place_id=1122
And one that excludes obscured observations:
https://www.inaturalist.org/observations?place_id=1122&taxon_geoprivacy=open&geoprivacy=open
and even more search options at https://forum.inaturalist.org/t/how-to-use-inaturalists-search-urls-wiki/63