San Marcello 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 25 km west 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....

.

The municipality of San Marcello contains the frazione

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...

(subdivision) Acquasanta.

San Marcello 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....

, Jesi

Jesi

thumb|250px|Teatro Pergolesi.Iesi is a town and comune of the province of Ancona in the Marche, Italy.It is an important industrial and artistic center in the floodplain on the left bank of the Esino river before its mouth on the Adriatic Sea.-History:Iesi was one of the last towns of the Umbri...

, 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....

, Monsano

Monsano

Monsano is a comune in the Province of Ancona in the Italian region Marche, located about 20 km west of Ancona.Monsano borders the following municipalities: Jesi, Monte San Vito, San Marcello....

, Monte San Vito

Monte San Vito

Monte San Vito is a comune in the Province of Ancona in the Italian region Marche, located about 20 km west of Ancona, in the lower Esino valley....

, Morro d'Alba

Morro d'Alba

Morro d'Alba is a comune in the Province of Ancona in the Italian region Marche, located about 25 km west of Ancona.Morro d'Alba borders the following municipalities: Belvedere Ostrense, Monte San Vito, San Marcello, Senigallia....

. Founded in 1234 by a community of people from Jesi

Jesi

thumb|250px|Teatro Pergolesi.Iesi is a town and comune of the province of Ancona in the Marche, Italy.It is an important industrial and artistic center in the floodplain on the left bank of the Esino river before its mouth on the Adriatic Sea.-History:Iesi was one of the last towns of the Umbri...

, it has a notable line of walls and the Renaissance Palazzo Marcelli.