In order to qualify for Canadian citizenship, a Permanent Resident needs to reside in Canada for 4 out of 6 years immediately preceding your application. To qualify for Canadian citizenship you must:
Children need not meet the residency requirement,but they must be a permanent resident of Canada and an adult applying on their behalf must either be a Canadian citizen or be applying for citizenship as a family. Certain people may not apply for citizenship; for example, those subject who have recently been or are in prison, on parole or probation, are serving a conditional sentence or have been charged or convicted of an indictable crime.
Individuals born outside Canada to Canadian parents may already be citizens. If so, they may apply for a formal determination of whether or not they are a citizen.