Pitcairn Islands is about 432 times smaller than Massachusetts.

Massachusetts is approximately 20,306 sq km, while Pitcairn Islands is approximately 47 sq km, making Pitcairn Islands 0.23% the size of Massachusetts. Meanwhile, the population of Massachusetts is ~6.5 million people (6.5 million fewer people live in Pitcairn Islands).
Tip: This to-scale comparison of Massachusetts vs. Pitcairn Islands uses the Mercator projection, which distorts the size of regions near the poles.