In the 19th century the local economy was dominated by fishing, weaving and handicrafts.

In 1824 a steamship company began providing regular service, which allowed the economy to grow.

Towards the end of the 19th century cattle, dairy farming and fruit growing became common in the municipality.

After the opening of the SBB line Romanshorn-Rorschach in 1869, the bleaching company, Radun AG (1888), and the oil and fat factory Sais (1916–17), were established in Horn.

After Radun AG closed the mill in 1989 and the oil factory shut down in 2000, only Unisto AG (later specializing in security seals, name badges and brand profiling[4]) as well as Sabo Specialities, successor of Sais, continued to provide manufacturing jobs.

[3] Horn has an area, as of 2009[update], of 1.72 square kilometers (0.66 sq mi).

Most of the population (as of 2000[update]) speaks German (90.1%), with Italian being second most common ( 2.7%) and Portuguese being third ( 1.5%).

[7] The age distribution, as of 2009[update], in Horn is; 236 children or 9.1% of the population are between 0 and 9 years old and 284 teenagers or 11.0% are between 10 and 19.

[13] In the 2007 federal election the most popular party was the SVP which received 39.71% of the vote.

In the federal election, a total of 687 votes were cast, and the voter turnout was 42.3%.

[14] The historical population is given in the following table:[3][15] As of  2007[update], Horn had an unemployment rate of 1.64%.

[8] From the 2000 census[update], 1,161 or 48.0% were Roman Catholic, while 824 or 34.0% belonged to the Swiss Reformed Church.

Of the children in kindergarten, 22 or 51.2% are female, 4 or 9.3% are not Swiss citizens and 4 or 9.3% do not speak German natively.

The lower and upper primary levels begin at about age 5-6 and lasts for 6 years.

At the lower primary level, there are 28 children or 41.8% of the total population who are female, 11 or 16.4% are not Swiss citizens and 9 or 13.4% do not speak German natively.

In the upper primary level, there are 36 or 43.4% who are female, 14 or 16.9% are not Swiss citizens and 13 or 15.7% do not speak German natively.

In Horn, there are 76 teenagers who are in special or remedial classes, of which 42 or 55.3% are female, 4 or 5.3% are not Swiss citizens and 4 or 5.3% do not speak German natively.