Gresso is a former municipality in the district of Locarno in the canton of Ticino in Switzerland.

[2] The discovery of a Roman tomb from the 1st-2nd century AD, with pottery and coins, proves that Gresso was part of the outer-most reaches of the Vicus of Muralto.

[3] Gresso had an area, as of 1997[update], of 11.08 square kilometers (4.28 sq mi).

[4] The former municipality is located in the Locarno district, at an elevation of 999 m (3,278 ft) on the steep, left side of the Vergeletto valley.

The blazon of the municipal coat of arms is Azure a dove displayed argent and in a chief of the last a cross gules.

Most of the population (as of 2000[update]) speaks Italian (94.3%), with German and French making up the rest (2.9% each).

[9] The age distribution, as of 2009[update], in Gresso is; 2 children or 6.7% of the population are between 0 and 9 years old and there are no teenagers.

[7] The historical population is given in the following table:[3][12] The entire village of Gresso is designated as part of the Inventory of Swiss Heritage Sites.

[14] In the 2007[update] Gran Consiglio election, there were a total of 37 registered voters in Gresso, of which 19 or 51.4% voted.

[15] In the 2007[update] Consiglio di Stato election, The most popular party was the PLRT which received 13 or 68.4% of the vote.

[7] There were 12 residents of the municipality who were employed in some capacity, of which females made up 58.3% of the workforce.

[7] From the 2000 census[update], 32 or 91.4% were Roman Catholic, while or 0.0% belonged to the Swiss Reformed Church.