Jackson is about 2.1 times smaller than Seoul.

Seoul is approximately 605 sq km, while Jackson (map shows its 125 named neighbourhoods; the area covers the whole city) is approximately 289 sq km, making Jackson 47.79% the size of Seoul.
Tip: This to-scale comparison of Seoul vs. Jackson 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.