old folks

noun[plural only]3

1. •
   (informal) The old people of a particular place or social situation.

   • Let's plan a block party that's just as fun for the old folks as the younger folks.
2. •
   (informal) Senior citizens.

   • Some old folks prefer the amenities of 55+ communities, while others prefer a cabin in the woods.
3. •
   (informal) One's elderly relations.

   • We're hoping to see all our old folks at the wedding reception.