Birmingham is around the same size as Denver.

Denver is approximately 396 sq km, while Birmingham (map shows its 87 named neighbourhoods; the area covers the whole city) is approximately 381 sq km, making Birmingham 96.08% the size of Denver.
Tip: This to-scale comparison of Denver vs. Birmingham 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.