Frankfurt, officially Frankfurt am Main, is the most populous city in the German state of Hesse. Its 763,380 inhabitants as of December 31, 2019 make it the fifth-most populous city in Germany. On the River Main, it forms a continuous conurbation with the neighboring city of Offenbach am Main and its urban area has a population of 2.3 million. The city is the heart of the larger Rhine-Main Metropolitan Region, which has a population of 5.5 million... Show more

source