Leggia is a former municipality in the district of Moesa in the Swiss canton of Graubünden.

Of the rest of the land, 2.7% is settled (buildings or roads) and the remainder (24.7%) is non-productive (rivers, glaciers or mountains).

Most of the population (as of 2000[update]) speaks Italian (84.3%), with German being second most common (11.8%) and Spanish being third (2.4%).

[6] The age distribution, as of 2000[update], in Leggia is; 13 children or 10.2% of the population are between 0 and 9 years old.

[5] In the 2007 federal election, the most popular party was the SP which received 32.3% of the vote.