That's because pretty much all states in the NE US have high vax percentages. If the rest of the country did what MA has done - We'd be a very different position.
Massachusetts has received 10,634,070 doses so far, administering 90% or 9,581,708 of the doses. In Massachusetts, 5,243,987 people or 76.08% of the population have received at least one dose. Overall, 4,594,215 people or 66.66% of Massachusetts's population have been fully vaccinated.
How is Massachusetts progressing in its mission to vaccinate the population? See how many people are fully vaccinated state-wide and parse the numbers by demographics.
usafacts.org