Wisconsin is about 401 times bigger than Atlanta.

Atlanta (map shows its 114 named neighbourhoods; the area covers the whole city) is approximately 350 sq km, while Wisconsin is approximately 140,663 sq km, making Wisconsin 40,034% larger than Atlanta.
Tip: This to-scale comparison of Atlanta vs. Wisconsin 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.