Raleigh is about 2.5 times bigger than Washington.

Washington is approximately 158 sq km, while Raleigh is approximately 391 sq km, making Raleigh 147% larger than Washington.
Tip: This to-scale comparison of Washington vs. Raleigh 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.