If you have plumbing for a single sink, do not purchase a double vanity. You will also need to ensure you understand the vanity's needs when it comes to sink type and fixtures. When purchasing items to go with your vanity, make sure you double-check specifications and fit.
It's also the 66th most populous city proper in the world, and the metropolitan area is the 18th largest. According to the 2010 Census, the Los Angeles metropolitan area had a population of more than 12.8 million residents, while the larger metropolitan region had an estimated population of 18.1 million.
The population of the Greater Los Angeles area (which includes the Inland Empire) is about 18 million people according to the 2010 United States Census, and is the second largest metropolitan region in the country.