Jackson is about 2.1 times smaller than Tokyo.

Tokyo is approximately 619 sq km, while Jackson (map shows its 125 named neighbourhoods; the area covers the whole city) is approximately 289 sq km, making Jackson 46.73% the size of Tokyo.
Tip: This to-scale comparison of Tokyo 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.