What is the density of the Earth's crust?

The uppermost layer of the mantle and the crust tend to act together as a rigid shell. Together they are called the ... Modeling the density of the center of the Earth yields densities of about 14 times that of water, which could be obtainable by compressing iron and nickel, but not surface type rocks. read more

The increase in density with depth in the Earth is a result of both phase changes and buoyancy driven segregation. Phase changes have a minor effect on density layering. read more

As another person answered, the Earth’s crust has different density in different locations and at different depths. The main difference is between continental crust and oceanic crust. The average density of the continental crust used to be taken as 2.67 g/cm^3 (2670 kg/m^3 in SI units). read more