Miki is located in the southwestern part of Hyogo prefecture, northwest of Kobe, on the 135th meridian east line.

There is an old town along the Mino River, and a new residential area near the border with Kobe City in the southeastern part.

The town of Miki was established within Mino District, Hyōgo with the creation of the modern municipalities system on April 1, 1889.

Miki has a mayor-council form of government with a directly elected mayor and a unicameral city council of 16 members.

In terms of national politics, the city is part of Hyōgo 4th district of the lower house of the Diet of Japan.

Miki has had an industrial economy based on metalworking from the early Edo Period, and continues to promote itself nationwide as the main production area for hand tools and hardware.

Agriculture, notably the growing of "Yamada Nishiki" brand rice and vineyards for the production of grapes is also important.