Sikhism by country

Sikhism can be found predominantly in the Punjab state of India but Sikh communities exist on every inhabited continent, with the largest total emigrant population being in the United States, Canada and the United Kingdom. At 1.7% and 1.54% respectively, India and Canada have the largest proportional representation of Sikhs. Outside of India, Canada is home to the largest proportion of Sikhs worldwide, forming a majority of the Canadian population with Punjabi ancestry and a large proportion of those with Indian and South Asian ancestry. Further, there is a growing minority of Sikh converts of various origins. 
Despite centuries of emigration and a large Punjabi diaspora, as of 2021, the majority of the world's 23 million Sikhs live in the India, specially in East Punjab region of India comprising today's (Punjab, Haryana, Himachal Pradesh and Chandigarh as well as Sri Ganganagar and Hanumangarh) where Sikhism traces its roots in late 15th century.
Methodology.
The figures on this list are either based on each of the country's respective censuses or are calculated by specific organisations. Some of these figures are rounded off. In case of conflicting estimates, both the lowest and highest estimates are included.
By region.
These percentages were calculated by using the above numbers. The first percentage, 4th column, refers to the percentage of Sikhs in a region (Sikhs in the region/total population of the region). The last column shows the Sikh percentage compared to the total Sikh population of the world (Sikhs in the region/total Sikh population of the world).
See also.
General: