There's a faction/territory/zone called "The Culture"!?Local in some systems jumped as high as 3600. Local does only count characters, not people, but that's still a lot of logged in accounts in the same space.
Edit: This is the current sovmap:
Most of the north/north-west is CFC aligned. The last Coalition map shows the rough CFC area, although it's a bit out of date with the loss of CO2.
If I was a player I'd choose this one because Iain M. Banks.