Where was the I Know What You Did Last Summer film series filmed?

The I Know What You Did Last Summer film series has 2 titles (1997 to 2006). Wikidata records no filming place for them; Wikipedia names Duke University, Sonoma County, Sonoma, Park City, Southport and 3 more places. Every place links to its source.

The productions, in order

Named in Wikipedia's own articles

Places named only in the titles’ Wikipedia articles.