I'm curious. I've heard many say this. Why is Disneyland more a local park and Disneyworld is more a tourist destination? I mean people come from all over the world to go to Disneyworld. This doesn't happen at Disneyland?
Mostly because the local area is very densely populated, much moreso than Orlando. Disneyland has been a locals park since it opened. Back then, many peoples didn't fly at all, and even fewer flew all the way to California regularly. WDW was created as a vacation destination, in a place that was already popular for vacation goers. WDW serves the European and South American market more because of its geographic location. Also, the majority of Americans live east of the Mississippi, making a trip to Florida shorter and more do able by driving.
Disneyland gets tourists, especially from Asia and Australia. There is a constant stream of our of state visitors, but it is much smaller than WDW. I don't have numbers, but my guess would be less than 20% of the guests at DL are from out of state on any given day.
It is just SO easy to go to Disneyland for the day. Several million people live within an hour drive, and the process to get there is less of a hassle than at WDW.