The decline by age is substantial
Ever-use among adults under 30 was about four times the rate among adults 65 and older. The 30–49 group sat between those endpoints, while one in five adults 50–64 reported having tried online dating.
The values come from one survey using one question. That consistency makes the age comparison more defensible than combining platform marketing numbers from different years.
Tinder’s age curve is steeper
Among people who had ever used online dating, 79% of users under 30 said they had used Tinder. That figure was 44% among users ages 30–49 and lower among older users.
This denominator is online-dating users, not all adults in the age group. Pew separately reported Tinder use as 14% of all U.S. adults.
Age changes the meaning of a pool
A national population estimate includes people who have never used an app. An app-use estimate includes former users. Neither is the same as the number of recently active, locally reachable profiles.
For a standards calculation, start with age and location from a population source, then label app participation as a separate unknown unless current platform data are available.