See also: County of Montgomery
The county of Montgomery - in English: in Montgomery County - is one of the 88 counties of the State of the Ohio, with the the United States.
Its seat is fixed at Dayton.
According to the data of the Office of the census of the United States, the county of Montgomery has a surface of: 1203 km ² (either 464 semi ²), of which: 1196 km ² (either 462 m ²) on the terrestrial surfaces and 7 km ² (or 3 semi ²) on the watery surfaces.
County of Miami, in north
The county was populated, at the time of the census of 2000, of: 559062 inhabitants.