Wichita is about 1.2 times bigger than Portland.

Portland is approximately 346 sq km, while Wichita (map shows its 73 named neighbourhoods; the area covers the whole city) is approximately 428 sq km, making Wichita 24% larger than Portland.
Tip: This to-scale comparison of Portland vs. Wichita 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.