As people get older, their likelihood of living alone increases. The AARP reports that more and more older adults do not have children. That means that there are fewer family members to provide company and care as those adults become seniors.
While living alone does not inevitably lead to social isolation, it can certainly be a contributing factor. Another factor to consider is how often seniors engage in social activities.
Meetup.com has a great platform that allows you to search specifically for "Senior" groups on their site. Further more you can then refine your search by distance too. The variety of groups is as wonderful as the people you're likely to meet. Sports, Globetrotters, Jeep club, Coffee & Conversation, Lovers of Art and Pets! The Littleton Devine Divas are 145 members strong who generally meet during the day (because the large majority of us are retired) ,with an occasional weekend event.
If you don't find one that suits your interests that's no problem. Start your own group! If you find yourself feeling isolated, make it your resolution to connect in 2020.
Check it out
https://www.meetup.com/topics/seniors/us/co/denver/