Collagna 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 Reggio Emilia

Province of Reggio Emilia

The Province of Reggio Emilia is one of the eight provinces of the Italian Region of Emilia-Romagna. The capital city, which is the most densely populated comune in the Province, is Reggio Emilia....

 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 Emilia-Romagna

Emilia-Romagna

Emilia–Romagna is an administrative region of Northern Italy comprising the two historic regions of Emilia and Romagna. The capital is Bologna; it has an area of and about 4.4 million inhabitants....

, located about 90 km west of Bologna

Bologna

Bologna is the capital city of Emilia-Romagna, in the Po Valley of Northern Italy. The city lies between the Po River and the Apennine Mountains, more specifically, between the Reno River and the Savena River. Bologna is a lively and cosmopolitan Italian college city, with spectacular history,...

 and about 50 km southwest of Reggio Emilia

Reggio Emilia

Reggio Emilia is an affluent city in northern Italy, in the Emilia-Romagna region. It has about 170,000 inhabitants and is the main comune of the Province of Reggio Emilia....

. As of 31 December 2004, it had a population of 1,004 and an area of 67.0 km².

The municipality of Collagna contains the frazioni

Frazione

A frazione , in Italy, is the name given in administrative law to a type of territorial subdivision of a comune; for other administrative divisions, see municipio, circoscrizione, quartiere...

(subdivisions, mainly villages and hamlets) Acquabona, Cerreto Alpi, Cerreto Laghi, Oratorio, Ponte Barone, Porali, Valbona, and Vallisnera.

Collagna borders the following municipalities: Busana

Busana

Busana is a comune in the Province of Reggio Emilia in the Italian region Emilia-Romagna, located about 80 km west of Bologna and about 45 km southwest of Reggio Emilia....

, Comano, Fivizzano

Fivizzano

Fivizzano, a walled city in the province of Massa-Carrara, Tuscany , became part of the Republic of Florence in the 15th century thus gaining the Tuscan republic an important foothold in Lunigiana, a key region which Genoa, Pisa, Milan and Florence had sought to dominate since the early Middle Ages...

, Ligonchio

Ligonchio

Ligonchio is a comune in the Province of Reggio Emilia in the Italian region Emilia-Romagna, located about 80 km west of Bologna and about 50 km southwest of Reggio Emilia...

, Ramiseto

Ramiseto

Ramiseto is a comune in the Province of Reggio Emilia in the Italian region Emilia-Romagna, located about 90 km west of Bologna and about 45 km southwest of Reggio Emilia...

, Sillano

Sillano

Sillano is a comune in the Province of Lucca in the Italian region Tuscany, located about 90 km northwest of Florence and about 45 km northwest of Lucca...

.