Households I can count off hand
Asben and Dala's
Ginah
Aranel
Raim
Jenai and Corwin
Morgan and Ro
The House near the Temple of Ellistraee (I don't remember who owns it)
Jalya (Cave up by Morgan's if I'm not mistaken)
The Temple of Sune
Sara
Ironhand Armory
The Temple of Ellistraee (if anyone actually lives there not sure)
So really there are 12 households. If you are going to do the "household" voting, I personally go for one vote per household no matter what the size of the household. Yes, we could "pack" lots of people in the Temple of Sune or Asben and Dala's for that matter. But I don't think people would do that.
If I've forgotten anyone, please just post here and let me know.

I wanted to explain who I was counting and why.
*Edit*
I read Lalant's post so if we include one from each household adding the "businesses"
That's 16 households
Adding....
Mirtho Tailor's shop
Celestial Aspirations
Starlight Inn
Trek
Now....
Note on the Amazons:
Most of the active members of the Amazons have homes already around Mirtho. If there are any who actively live at the Hall, please forgive me, but to my knowledge (both OOC and IC) no one stays there calling that home much. That is why I did not include them in the Household listing.