1) Midieval cultures tend to be agricultural; these inspire large families, and multi-generation houses. A farmhouse could have a set of grandparents, a set of parents, and ~4-5 kids, easy. Add in a farm hand, and that's 10... put a bunch of those around the city.
They suggested 11 buildings were random structures; often business people live in their work buildings; the blacksmith lives not in the forge itself, but in an attached living area; as do his apprentice(s). Same for the baker, the priest, the general store owner, etc. If the church is 1 building, that's 10 buildings with ~5-10 occupants, and 6 houses, with 5-10 occupants... Even at max, that's 150 +priest and acolyte(s) in the town proper. That leaves 800 people to make up... which is quite a few.
Then again, in a story I read recently, the master/apprentice ratio was more like 1/20. Master had 2 senior apprentices, 8 midling apprentices, and ~10 noobs. Also had a couple other adults helping manage the crowd; a cook, a teacher, etc. Took in 8 year olds, taught them reading, writing, math, and thier trade(gemcutting), released them 9 years later as journeymen.. the ones who stayed that long. Only 2 made it out of each yearly n00b class of 10. Others moved to less prestigious shops.
So if some of those random buildings are craft-shops like that... we're still short a bunch. Eighty out-lying farms seems like a LOT for a village. Even 40 seems like a lot; and 20 people on a farm seems like it'd be... cozy; and I thought all adventurers came from farms where they were raised by their parents alone, and half the time one of them was already dead, too.