Jackson is about 1.3 times smaller than Birmingham.

Birmingham (map shows its 87 named neighbourhoods; the area covers the whole city) is approximately 381 sq km, while Jackson (map shows its 125 named neighbourhoods; the area covers the whole city) is approximately 289 sq km, making Jackson 75.94% the size of Birmingham.
Tip: This to-scale comparison of Birmingham vs. Jackson uses the Mercator projection, which distorts the size of regions near the poles.
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