Bulgaria is about 894 times bigger than Boston.

Boston is approximately 124 sq km, while Bulgaria is approximately 110,879 sq km, making Bulgaria 89,319% larger than Boston.
Tip: This to-scale comparison of Boston vs. Bulgaria uses the Mercator projection, which distorts the size of regions near the poles.
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.