Someone posted the default config file online, it looks as such:

Ruins
- 0 Residents
- Spirit
- Block limit: 1

Settlement
- 1 Residents
- Hermit
- Block limit: 16

Hamlet
- 2 Residents
- Chief
- Block limit: 32

Village
- 6 Residents
- Baron Von
- Block limit: 96

Town
- 10 Residents
- Viscount
- Block limit: 160

Large Town
- 14 Residents
- Count Von
- Block limit: 224

City
- 20 Residents
- Earl
- Block limit: 320

Large City
- 24 Residents
- Duke
- Block limit: 384

Metropolis
- 28 Residents
- Lord
- Block limit: 448


These values are consistent with noobstown, with the exception of number of residents. My town has 31 residents and is only a Large City, so it appears the minimum residents is raised slightly, with the exception of Ruins and Settlement.