I hope this helps.
Keller Williams Realty
DRE Lic No. 01474901
A close friend of mine and fellow real estate agent used to live on the corner of Castro and 21st on the West side of the street, and she considered herself to live in Land Park. Of course, I also have clients who live the other side of W Street going north on 22nd and because their ZIP is 95818, they consider themselves to live in Curtis Park, but I don't.
Lyon Real Estate
Dan was pretty right-on with the exception of Freeport Blvd. There is a small number of homes that are still considered Land Park that are east of Freeeport. A better divison would be the homes east of the Union Pacific railroad tracks.