The human brain's storage capacity is incalculable by modern technology. There is no way to quantify the storage capability of a synaptic neural-network, as humans can't recreate it. All electrical circuits we've created are logic gates and loops.
I have a 4TB hard drive.
If the brain were so simple we could understand it, we'd be so simple we couldn't.
The build height for the United States would need to be from 1 layer of flat bedrock with a single layer above it as the first visible layer would be 6,286 blocks on 1:1 scale. The X would come out to about 4.313×10^6 blocks and the Z to 2.546×10^6 blocks. We're talking somewhere in the neighborhood of 4.289×10^13 blocks or about 69 penta-blocks in volume. Granted this does NOT include Alaska or Hawaii. This map would be HUGE (roughly 220TB). Now if each state was done separately, it would be MUCH easier; although Alaska would still be roughly 39TB (based on sqare meters of both).