There has been much discussion about the ‘divides’ in the US election. Race, gender, and income status all play a part. I would add a cultural divide between Cities and beyond the Cities, which revealed itself in the US election and also in Brexit. In both elections, the popular vote was very close nation-wide but very concentrated (either way) at the local levels.
US presidential results by County:
Democrats mainly concentrated in big cities and university districts with notable exceptions of black and hispanic voting clusters, and some rural Democrats (eg. Vermont). In Democratic states like Washington, Oregon, and Illinois, you see the polarization where most of the geography went Trump while the major cities went with Hillary.
Focusing on England itself, it was London (Remain) versus the countryside and regional cities (Leave).
Source: Vancouver Sun