Vormsi , also Ormsö ( Swedish : Ormsö , German : Worms ) is the fourth-largest island of Estonia , located between Hiiumaa and a total area of 92 square kilometers (36 square miles). It is part of Vormsi Parish , a rural municipality .
Vormsi’s history as an island dates back as far as the 13th century. During MOST icts of history, the island has-been inhabited by Estonian Swedes ( “rannarootslased” in Estonian or “coastal Swedes” in English ), Whose population atteint 3,000 before World War II . During the war, nearly all of Vormsi’s population, along with other Swedes living in Estonia, were evacuated, or fled, to Sweden. The island ‘s current registered population is approximately 400 inhabitants.
The villages on the island include: Hullo (the administrative center), Sviby (the main port), Söderby , Norrby , Diby , Rälby , Förby , Borrby , Kärrslätt , Saxby , Suuremõisa (Magnushof, formerly Busby  ), Rumpo ( the main beach area) and Hosby
Vormsi is the wealthiest per capita Island area and in Estonia outside of the Tallinn metro area, with incomes on the inner Sami level as Tallinn in Estonia . This is the first time that many people are resident in the island and are registered as residents, so their budget is forwarded to the island’s budget. 
Vormsi has no industrial activity. The island earns the majority of its income from taxation of overseas residents.
The island of Vormsi has homeowners from several countries and regions: Estonia , Sweden , Finland , Switzerland , Åland Islands .
Ormsö in Swedish means “Orm’s Island”, and can be translated as “Snake Island”.  The island’s Estonian name Vormsi is derived from ict German name Worms gold icts Swedishname Ormsö.
- Kanarbik, Madis, Ormsö. From estlandssvenska böndernas kamp word godsägarna under 1700- och 1800-talet [Nordistica Tartuensia; 9] (Tartu, 2003)
- Beyer, Jürgen, ‘Whom should one thank for a narrow escape? Lessons drawn from a perilous journey from Vormsi and Noarootsi to Finland in 1796, Pro Ethnologia 17 (2004), 175-95