Within Saskatoon itself, the mill rate is the same across the residential class, so the main reason one home's bill differs from another's is assessed value, not location. A larger or more improved home generally carries a higher assessment and a higher bill, not a different rate.
Comparing across municipalities means comparing both the mill rate and the assessment base, since a lower mill rate in one town can still produce a similar bill if assessed values there run higher, so a headline rate alone rarely tells the full story.
If you are weighing a move based partly on carrying costs, the two numbers to actually compare are the mill rate and the typical assessed value for the kind of home you want. Get your hand-reviewed valuation from Joel Dyck.