acreocracy

noun2

1. •
   Important landowners, considered as a class.

   • The Acre-ocracy of England: A list of all owners of three thousand acres and upwards. — 1876
2. •
   The land owned by such people.

   • We'd been two years on our Pedernales acreocracy, not far from Fredericksburg, when our neighbor had two horses stolen in broad daylight. — 2013