Relative to which city in the US? Not the person you're replying to but I feel like it applies to me as well, and it's easy to find US places more densely popu

Relative to which city in the US? Not the person you're replying to but I feel like it applies to me as well, and it's easy to find US places more densely populated, or less densely. Density isn't even a large factor here, I'm building a house in a place with 140 inhabitants/km² (4000 total) and other than the ground (which is a minor part of the total price) it's not significantly cheaper than in my current city of 2600 inhabitants/km² (500 000 total within city limits, 1,5 million metro area).