The population of Rowland Heights is 48,231 as of the 2020 census. It is a unincorporated community in Los Angeles County, California, and is part of the Los Angeles Metropolitan Area. The city is served by the Los Angeles County Board of Supervisors. The city is the largest census-designated place (CDP) in Los Angeles County by area, and is the fourth largest by population. It has a large Taiwanese population, which contributed to its nickname, "Little Taipei."
The City of Industry and nearby Walnut are the main economic drivers of Rowland Heights, and the city is home to many businesses. According to Spering's Best Places, Rowland Heights is the second-most-comfortable city to live in during the summertime, based on a comparison of income levels, housing prices, and overall community conditions. The city's median listing price increased to $788,500 in 2018, while its median home value rose to $669,600.