Local Rank Tracking: How Grid Tracking Works and Why

Grid-based local rank tracking checks where your business ranks for a keyword from many points spread across a map, instead of from one location. Each point returns a position, and the results form a heatmap. It works because local rankings change with the searcher’s location, so a single rank number can mislead.

BrightLocal’s guide to geo-grid ranking tools explains that local-intent results can vary with the geolocation of the person searching, giving the example that someone searching in the centre of a city for “restaurant” is likely to see very different results from someone on the outskirts. That variation is exactly what a single “position 3” figure hides.

Why a single local rank number is unreliable

If you check your rank for “dentist” from your office, you see how you rank for someone standing at your office. A customer three kilometres away sees a different list, because Google’s local results take distance into account. Google’s guidance on local ranking names three factors, relevance, distance and prominence, and describes distance as how far each business is from the person searching. It also says that if the searcher has not shared their location, Google estimates it from their search behaviour.

So the question “where do I rank?” has no single answer. A better question is “where do I rank, and for whom?” Grid tracking answers that by sampling many places. I use it mainly to spot geographic patterns: where I am strong, where a competitor takes over, and how fast the strength fades with distance.

If you are new to how the local pack is decided, read my guide on how to rank in the Google Maps local pack first, then come back here to measure the result.

How grid tracking works

The principle is simple, even if the tool behind it is not.

You choose a centre point. Normally this is your business address or the middle of your service area.
You choose a grid size and spacing. The tool places a square of points over the map, such as three by three (9 points), five by five (25 points) or seven by seven (49 points), as BrightLocal describes. Some tools offer larger grids.
The tool searches your keyword from each point. It simulates a search made at that location and records where your business appears.
The results are plotted. Each point shows a position, usually coloured from strong to weak, which forms the heatmap.
The scan repeats on a schedule. Running the same scan monthly or weekly shows trends instead of one-off snapshots.

The names of the metrics vary by tool. Many show an average position, and some show the share of grid points where you appear in the top three. Read the definitions in your own tool before you compare numbers between tools, because they are not interchangeable.

Your competitors are in the map pack. Are you?

See what is keeping you out of the local results.

Check my Maps visibility

Choosing keywords to track

Do not track fifty keywords. A short, deliberate list is easier to act on and usually costs less in tool credits. Use my rules:

Start with revenue. Pick the five to ten searches that, if you won them, would bring the most valuable customers.
Use the words customers use. Check your own enquiries, review text and search data rather than guessing. The category label may not match the way customers search.
Keep generic head terms. A phrase such as “dentist” or “plumber” is usually where the local pack appears, so it is the one to protect.
Add one or two specific services. For example “emergency plumber” or “teeth whitening”, if those are profitable lines.
Do not track your brand name. You will probably rank for it, and it tells you little.

Your categories heavily influence which searches you appear for, so if you see poor results across all keywords, check them first with my guide to Google Business Profile categories.

Choosing grid size and radius

The grid should match where your customers really come from, not where you hope to rank. A neighbourhood clinic may only care about a couple of kilometres. A plumber covering a whole city may want a wider grid.

Business type	Sensible grid approach	Reasoning
Walk-in shop or cafe	Small radius, tight spacing	Customers rarely travel far, so detail near the shop matters
Clinic or professional office	Medium radius	Patients and clients travel across a district
Service-area business	Wider radius, centred on the main service area	Customers are spread across a city or region
Multi-branch business	Separate grid per branch	Each profile has its own centre and competitors

A bigger grid is not automatically better. As BrightLocal notes, more points give more insight but use more credits. Start with a modest grid, such as five by five, and enlarge it only if you need more detail. For service-area businesses, my guide to service-area business local SEO explains how to define the area in the first place.

How to read a heatmap

A typical result shows the strongest positions around your address, which weaken as you move away. That is normal and expected: distance is a major factor. The useful questions are the following.

How far does your strength reach? If you are in the top three at the centre but drop off within a short distance, a competitor may be closer or stronger in those areas.
Is the pattern symmetrical? If one side is weak, look at what is there. A cluster of competitors, a different district, or a physical barrier such as a river or motorway can explain it.
Where are the gaps inside your service area? Weak spots inside areas you serve are the best opportunities.
What changed since the last scan? Trends matter more than a single reading.

Next, turn the pattern into a decision. This is the rule of thumb I use. It is a guide for investigation, not a diagnosis.

What the grid shows	What to look at first
Strong near the address, collapsing quickly	Prominence: reviews, links and citations, and how the nearest competitors compare
Weak everywhere, even at the centre	Relevance: categories, services, description, and whether the profile is complete
Strong for one keyword, weak for another	Page and profile content for the weaker service; whether the category supports it
Strong in one direction only	Competitor concentration, or where your reviews and links come from

If prominence looks like the issue, work on genuine links using my guide to local link building. If the weak spots are towns where you have no distinct page, consider whether you honestly need one, using the advice in local landing pages.

Here is an illustrative example. Imagine a physiotherapy clinic whose grid shows top-three positions for “physiotherapist” within a short distance of the clinic, but poor positions in a residential district to the east where many of its patients live. The clinic would first compare the profiles that win there: their review counts, their categories and whether they sit closer to those streets. That comparison, not the colour of the map, tells it what to fix.

Limitations you should know about

Grid tracking is a useful instrument, not an exact copy of what customers see. Keep these limits in mind.

It simulates locations. A tool searches as if from a point, but a real person’s results can also depend on their device, history and settings.
Results fluctuate. Local results can shift between scans. One scan is a snapshot, so compare several.
It measures positions, not business results. A high rank that does not produce calls is not a win, and a modest rank that brings customers might be fine.
The grid is only as good as your keywords. The wrong terms produce confident but irrelevant maps.
Tools differ. Different tools sample and score differently, so do not mix their figures.
Cost. More points and more keywords use more credits, so scope the scan to the decision you need to make.

I therefore pair grid data with business data: calls, direction requests and website clicks from the profile. The guide to Google Business Profile performance metrics shows how to read those. If rank improves and enquiries do not, investigate the profile and website before you celebrate.

A simple monthly routine

Run the same scan, with the same keywords, grid size and spacing, each month.
Save the screenshots or exports with dates.
Note what you changed that month: categories, reviews, new pages, links.
Compare the map with last month’s, and with the profile’s calls and direction requests.
Choose one action for next month, not ten.

Keeping the settings identical matters. If you change keywords or spacing between scans, you cannot tell whether a difference is real or an artefact.

Questions people ask about local rank tracking

What is a geo-grid rank tracker?

It is a tool that checks your local ranking for a keyword from many points across a map and plots the results as a heatmap. It shows how your visibility changes with distance and direction, which a single rank check cannot.

How big should my tracking grid be?

Match it to where your customers live or work. Start with a modest grid such as five by five and increase it only if you need more detail, since larger grids use more credits in most tools.

Why does my rank look different from what customers see?

Local results depend on the searcher’s location, and tools simulate that. Real people may also see differences from their device and settings, so treat the heatmap as a strong indication, not an exact copy.

How often should I run a scan?

Monthly is enough for most small businesses. Weekly can help while you are testing a change, but frequent scans make it easy to react to noise.

The wider programme is in my local SEO checklist for small businesses. If you want help setting up tracking that matches how your customers actually search, see my local SEO services or request a free audit.

More in this series (Local SEO in depth): start with Local SEO Checklist for Small Businesses, then explore: