Complex sentence: According to the 2000 US Census, there were 65,280 Armenian-born people in the United States: 57,482 in California, 1,981 in New York and 1,155 in Massachusetts.
Split into simpler sentences: According to the 2000 US Census, there were 65,280 Armenian-born people in the United States. Of these 57,482 lived in California, 1,981 in New York and 1,155 in Massachusetts.