Secondly Trulia uses Google for its maps. Google corrected the "Adams North" mistake about a year ago, yet if you select "map" on Trulia, they are identifying a location that is not a San Diego neighborhood.
To say "Trulia isn't doing it" is false. They promote in their searches and they actively add it as a neighborhood on a map program that does not.
If you need to sell or refinance, it's best to contact an agent for an idea of value. Neither agents nor appraisers use online consumer real estate web sites to estimate value.