Alzheimer Europe estimates the number of people with dementia in Switzerland in 2012 as being 133,722. This represents 1.73% of the total population of 7,733,709. The number of people with dementia as a percentage of the population is somewhat higher than the EU average of 1.55%. The following table shows the estimated number of people with dementia between 30 and 59 and for every 5-year age group thereafter.

In 2004, the Swiss Alzheimer Association carried out a survey and found that 1/3 of people with dementia had not been diagnosed (Nationale Umfrage, 2004). Today, the association estimates that approximately 50% of people with dementia have not been diagnosed. (Schweizerische Alzheimervereinigung, 2004)