North Richland Hills is a city in Tarrant County, Texas, United States. The population was 55,635 at the 2000 census but estimated to be 65,078 in 2006. In 2006, North Richland Hills was selected as the one of the "Top 100 Best Places to live in America" according to Money magazine. North Richland Hills is also third largest city in Tarrant County with more than 65,750 residents.