Filter Sharepoint View
What's the least painful way to filter a least of people by their age
e.g. only show people over the age of 60 based on their birthday
Use a Content Query web part.
Assuming a Date field called DOB, add the content query web part to a page and edit the web part. Expand the query section and add your list to Show items from the following list.
Then under Additional Filters > Show items when: select DOB field and is less than or equal to and in Custom Value or Query enter -21915 then click Ok and the web part should show people over the age of 60.