Denver is around the same size as Las Vegas.

Las Vegas (map shows its 26 named neighbourhoods; the area covers the whole city) is approximately 367 sq km, while Denver is approximately 396 sq km, making Denver 8% larger than Las Vegas.
Tip: This to-scale comparison of Las Vegas vs. Denver 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.