Northern Ireland is around the same size as Connecticut.

Connecticut is approximately 12,548 sq km, while Northern Ireland is approximately 14,130 km² (5,456 sq mi), making Northern Ireland 13% larger than Connecticut.
Tip: This to-scale comparison of Connecticut vs. Northern Ireland 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.