Well, we have 328.8 Million people.
Roughly 70 million under 16, not eligible yet.
We have roughly 75 million already fully vaccinated.
We have another roughly 50 million with one shot done of the two shots done.
Trump got roughly 74 million votes, of Trump supporters, polling has been consistent saying roughly 40% will refuse to get the vaccine. That's another 30 million.
Then you have the 10% of Democrats that say they won't get it either. That's another 8 million.
Add in undisclosed anti-vaxxers, medically compromised, pregnant, invalids, shut-ins. etc
That brings us to 225/330. With roughly 100 million people remaining, roughly equal to the number of adults that didn't vote in the last election.