Edo, officially known as Edo State, is a state in the South-South geopolitical zone of the federal republic of Nigeria. As of 2022, the state was ranked as the 22nd most populous state in Nigeria. The estimated state population is around 4,777,000 in 2022. Edo State is the 22nd largest state by landmass in Nigeria. The state's capital and largest city, Benin City, is the fourth largest city in Nigeria, and the centre of the country's rubber industry.