Arao is a city located in the Kumamoto Prefecture of Japan. It serves as a regional municipality characterized by its specific geographical location within the prefecture's administrative boundaries.
As of July 31, 2024, the city had an estimated population of 49,334 residents living in 24,092 households. The total land area of Arao is 57.37 km² (22.15 sq mi), resulting in a population density of approximately 860 persons per km².