What is the largest US city without an NFL franchise?

The largest US city without an NFL franchise is San Diego, California. It used to have a team called the San Diego Chargers, but they moved to Los Angeles in 2017. San Diego is a big city with a population of about 1.4 million people, but it doesn't have a football team in the NFL anymore. Some other examples of big cities without an NFL team include Portland, Oregon and Orlando, Florida. These cities have other sports teams like basketball or soccer, but they don't have an NFL franchise.