Rigia proper is mostly everything west of and including the Rockies, from as far north as the north coast of Alaska, to as far south as the tip of Baja California.
The New Zealand and Oceanian Dominion
The Indonesian Dominion
The Municipal Dominion of Shanghai
Special Administration Territories**
The Galapagos Islands
The Falkland Islands
*Colonial Dominions are semi-autonomous, and are able to enact laws and taxes so long as they do not contradict or supersede Rigian law. They are allowed to take seats on the Rigian Grand Council, but are not represented internationally at the UN.
**Special Administrative Territories are under direct administration of Rigia, but due to extreme distances and low populations, are not provinces, and are instead collectively given 5 seats on the Grand Council