As of 2001[update] India census, Sikka had a population of 17,699. Males constitute 52% of the population and females 48%. Sikka has an average literacy rate of 44%, lower than the national average of 59.5%: male literacy is 54%, and female literacy is 34%. In Sikka, 15% of the population is under 6 years of age.
Most residents are of Gujarat and speak Gujarati and Kachhi language. Kachchi language is written in the Gujarati script but is not mutually intelligible with Gujarati. Major communities include Muslim Waghers, Ahirs(Yadav), Patels, Rajputs, Rajgor Brahmins, Mers, Lohanas etc.
Sikka is also a home to the traditional sailing vessel industry (also referred to as Indian dhows) where one can see wooden cargo vessels dry docked, repaired and newly constructed at the sikka creek also locally called as Hoda Nar or tawai bunder. In the recent past a full-fledged sailing vessel industry flourished here and was the main source of income for this village.
One of the main occupations of the people living in this coastal village is sea faring.
Reliance Industries Limited is operating one of the largest grass root refineries in the world here. This plant covers an area of approximately 25 square kilometers.
In 1960s it was only an Industrial city with a cement factory of Somani's, known as Digvijay Cement Co. (also known as DCC). there are also many co-opertive society's known as Sikka kaamna greens etc. Today also the Google map of Sikka shows the factory as Digvijay Cement Co. in addition to temples etc. Saurashtra Electricity Board also had a Power plant in a separate Power station building to supply mainly to this industry.
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