Serbia is around the same size as New Brunswick.

New Brunswick is approximately 72,908 km² (28,150 sq mi), while Serbia is approximately 77,474 sq km, making Serbia 6% larger than New Brunswick.
Tip: This to-scale comparison of New Brunswick vs. Serbia 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.