The population of NYC is equal to the combined populations of Vermont, Alaska, New Mexico, North Dakota, South Dakota, Wyoming, Montana, and West Virginia. Here's what that looks like on a map.
Put another way: 16 US Senators represent as many people in those states as a fraction of one of New York States' Senators represent the population of NYC. A Senator from Wyoming represents 290,000 people while one from New York represents 9.8 million people...and in California, there are 19 million people per Senator. That gives a Wyoming resident 65 times the voting power of a California resident.