The global prevalence of chronic cough(CC) is highly variable ranging from 2–18%. There is a lack of data on the prevalence and incidence of CC from the general population. The objective of this study was to investigate the prevalence and incidence of CC in a sample of Canadian adults, and how these influenced by age, sex, smoking, respiratory symptoms, medical co-morbidities, and lung function.Participants with chronic cough were identified from the Canadian Longitudinal Study on Ageing (CLSA) based on a self-reported daily cough in the last 12 months. This is a prospective, nationally generalisable, stratified random sample of adults aged 45–85 at baseline recruited between 2011–2015, and followed-up 3 years later. The prevalence and incidence per-100-person-years are described, with adjustments for age, sex and smoking.Of the 30 097 participants, 29 972 completed the CC question at baseline and 26 701 at follow-up. The prevalence of CC was 15.8% at baseline and 17.6% at follow-up with 10.4%–17.1% variation across 7 provinces included in the CLSA comprehensive sample. Prevalence increased with age, current smoking, and was higher in males(15.2%), Caucasians(14%), and those born in North America, Europe or Oceania(14%). The incidence of CC adjusted for age, sex and smoking was higher in males, underweight and obese. Respiratory symptoms, airways diseases, lower FEV1%predicted, cardio-vascular diseases, psychological disorders, diabetes and chronic pain had a higher incidence of CC.The prevalence and incidence of CC is high in the CLSA sample with geographic, ethnic and gender differences which is influence by a number of medical co-morbidities.