Almost every figure quoted about Punjab exists in several versions.
Village counts differ between the census, the revenue record and the panchayat department, because they count different things: a revenue village, an inhabited settlement and a panchayat are not the same unit.
Farm suicide counts differ between the state's own door-to-door survey and the police returns by a large factor.
Groundwater block classifications shift between assessment rounds with methodology changes. Emigration is not measured at all. Drug prevalence rests on one survey from 2015. Cancer incidence is disputed.
This site quotes figures with their source and rounds them, and where two sources disagree it says so.
Anybody using a Punjab statistic for anything should find out which department produced it and what it was counting, because the answer is frequently not what the number appears to say.
The census has not been conducted since 2011. Every population figure in use for Punjab is a projection from a count now fourteen years old, and every rate that uses population as its denominator inherits that.
Land records are being digitised and the digitised record does not always agree with the paper one it came from. Disputes about what the record says are among the largest categories of litigation in the state.
Where this site gives a figure without a year, read it as approximate. Where two sources conflict, both are given.