Castelplanio is a comune

Comune

In Italy, the comune is the basic administrative division, and may be properly approximated in casual speech by the English word township or municipality.-Importance and function:...

(municipality) in the Province of Ancona

Province of Ancona

The Province of Ancona is a province in the Marche region of central Italy. Its capital is the city of Ancona. The province has an area of 1940 km² and a 2006 population of 465,906 in 49 comuni , see Comunes of the Province of Ancona....

 in the Italian

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

 region Marche

Marche

The population density in the region is below the national average. In 2008, it was 161.5 inhabitants per km2, compared to the national figure of 198.8. It is highest in the province of Ancona , and lowest in the province of Macerata...

, located about 35 km southwest of Ancona

Ancona

Ancona is a city and a seaport in the Marche region, in central Italy, with a population of 101,909 . Ancona is the capital of the province of Ancona and of the region....

. As of 31 December 2004, it had a population of 3,303 and an area of 15.1 km².

The municipality of Castelplanio contains the frazioni (subdivisions) Macine, Pozzetto, Borgo Loreto and Piagge.

Castelplanio borders the following municipalities: Belvedere Ostrense

Belvedere Ostrense

Belvedere Ostrense is a comune in the Province of Ancona in the Italian region Marche, located about 30 km west of Ancona....

, Maiolati Spontini

Maiolati Spontini

Maiolati Spontini is a comune in the Province of Ancona in the Italian region Marche, located about 35 km southwest of Ancona. It is the birthplace of musician Gaspare Spontini....

, Poggio San Marcello

Poggio San Marcello

Poggio San Marcello is a comune in the Province of Ancona in the Italian region Marche, located about 35 km southwest of Ancona. As of 31 December 2004, it had a population of 763 and an area of 13.5 km²....

, Rosora

Rosora

Rosora is a comune in the Province of Ancona in the Italian region Marche, located about 40 km southwest of Ancona.Rosora borders the following municipalities: Arcevia, Castelplanio, Cupramontana, Maiolati Spontini, Mergo, Montecarotto, Poggio San Marcello.-History:The origins of Rosora are...

.