States such as Montana and Wyoming are referred to as “districts at-large”. The seven district-at-large states have just one statewide district because population is too low to split — doing so would result in overrepresentation of these citizens. In district-at-large states, median age hovers around the average of all districts: 37.6 years old.
District-at-large states
This is where you can find the oldest and youngest voters, but does that matter when it comes to elections?