Definition
Proximity is the distance signal in Google's local ranking: how far the business is from the searcher's location, or from the centre of the town named in the search. It is one of the three local signal groups alongside relevance and prominence. Because proximity depends on where the search is made, the same business holds a different Map Pack position on every street, and "near me" searches lean on it most.
Why it matters on the Georgian Bay shoreline
One rank per location
A rank report that says "position 2" for a Collingwood business is a report from one point. At the Blue Mountain village the same business may be position six, and in Stayner it may not appear. Grid rank tracking, which measures from a lattice of points across the service area, is the only honest way to read proximity.
A lever, not a verdict
Proximity is the signal owners can do least about directly, but it is not fixed. A verified location closer to the customers, a service area set to the towns that matter, town pages that give Google a relevance reason to reach past the nearest competitor, and reviews that mention the neighbourhood all extend the radius a business ranks inside. The businesses that hold the pack across a whole shoreline town have built prominence strong enough to overrule distance.
Example
Picture a landscaper based in Nottawa who ranks first for "landscaping collingwood" in Nottawa and the south end of Collingwood, and sits at position seven in Cranberry, six kilometres north, where two competitors are closer. The base cannot move. What can change is relevance and prominence for Cranberry: a town page, reviews that name Cranberry and Georgian Meadows, and citations that carry the Collingwood address. That is the work that narrows a proximity gap.
The common mistake
Reading one rank number and calling it the rank. An owner in Thornbury checks from the office, sees position one, and does not understand why the phone is quiet. The customers are searching from Clarksburg and Lora Bay, where the pack is different.