[2] Iragna was one of the ten village cooperatives (Vicini), which formed the municipality of Levantine.

It belonged to the valley community in 1441 when the entire Levantine along with Lodrino and its hamlets were conquered by Uri.

Under Milan, the long-established citizens of the village were allowed to select their own bailiff.

In the first half of the 17th century, the population of Iragna was involved in a series of witch trials.

[2] Iragna's chestnut forests were used to provide wood to residents of the middle and upper Leventina.

Granite mining has been a major source of income since the end of the 19th century.

[2] Iragna has an area, as of 1997[update], of 18.39 square kilometers (7.10 sq mi).

The blazon of the municipal coat of arms is Vert a tau cross inverted wavy between two bells or.

[7] Most of the population (as of 2000[update]) speaks Italian language (449 or 91.4%), with German being second most common (12 or 2.4%) and Serbo-Croatian being third (9 or 1.8%).

[6] The age distribution, as of 2009[update], in Iragna is; 55 children or 9.7% of the population are between 0 and 9 years old and 66 teenagers or 11.6% are between 10 and 19.

[7] The historical population is given in the following chart:[2][11] In the 2007 federal election the most popular party was the SP which received 33.79% of the vote.

In the federal election, a total of 150 votes were cast, and the voter turnout was 44.0%.

[12] In the 2007[update] Gran Consiglio election, there were a total of 340 registered voters in Iragna, of which 215 or 63.2% voted.

[13] In the 2007[update] Consiglio di Stato election, The most popular party was the PS which received 76 or 35.3% of the vote.

[7] There were 239 residents of the municipality who were employed in some capacity, of which females made up 35.6% of the workforce.

The number of jobs in the secondary sector was 62, of which 27 or (43.5%) were in manufacturing, 11 or (17.7%) were in mining and 24 (38.7%) were in construction.

In the tertiary sector; 1 or 2.7% were in wholesale or retail sales or the repair of motor vehicles, 9 or 24.3% were in the movement and storage of goods, 16 or 43.2% were in a hotel or restaurant, 2 or 5.4% were in the information industry, 1 or 2.7% were technical professionals or scientists, 4 or 10.8% were in education.

[7] From the 2000 census[update], 418 or 85.1% were Roman Catholic, while 3 or 0.6% belonged to the Swiss Reformed Church.

In the lower secondary school system, students either attend a two-year middle school followed by a two-year pre-apprenticeship or they attend a four-year program to prepare for higher education.

The professional program lasts three years and prepares a student for a job in engineering, nursing, computer science, business, tourism and similar fields.