Maryland is about 539 times bigger than Pitcairn Islands.

Pitcairn Islands is approximately 47 sq km, while Maryland is approximately 25,314 sq km, making Maryland 53,760% larger than Pitcairn Islands. Meanwhile, the population of Pitcairn Islands is ~50 people (5.8 million more people live in Maryland).
Tip: This to-scale comparison of Pitcairn Islands vs. Maryland uses the Mercator projection, which distorts the size of regions near the poles.