As was stated, every large city will have some sort of ethnic community.

In California, where I grew up, there is a large community near the Puente Hills Mall in La Puente/Industry Hills/Rowland Heights, California. I grew up with many Filipinos too. In Aurora and Denver there are a couple of areas with shops in Korean and Chinese. I've never spent time in either area other than driving past so I can't give first hand information.