The essentials
- Definition: your catchment area is the geographic perimeter most of your customers come from; online, it becomes the area where you want to appear in the local pack.
- On the listing: an address (a business receiving the public) and/or a service area (up to 20 areas, within roughly two hours' drive).
- What Google does with it: the service area doesn't extend your ranking; distance from the address remains the criterion. It informs the user and Google about your perimeter.
- The lever: concentrate reviews, local pages and citations on your real area rather than aiming wide.
Enhanced measurement your catchment area is the territory your customers come from: a few streets for a bakery, a conurbation for a tradesperson, a county for a specialist. In local SEO, it is also the area where you seek to appear in the local pack. The most frequent confusion is believing that declaring a wide service area in Google Business Profile is enough to be visible there. It isn't; here is how it works and what to do.
Defining your real catchment area
| Source | What it reveals |
|---|---|
| Billing or delivery addresses over the last 12 months | The real map of your customers, often more concentrated than you think |
| The Google listing's statistics: queries containing town or neighbourhood names | Where people search for you from |
| GA4, the by-town report of sessions and conversions | The areas that convert, not only those that visit |
| The travel time acceptable to your customers (or to you) | The physical limit of the area |
The result is generally a main area (70 to 80% of customers) and a secondary one. The first deserves all your effort; the second, a minimal presence. A business discovering that 75% of its customers come from three towns stops spending to cover twenty.
How to declare it in Google Business Profile
| Situation | Setting | Effect |
|---|---|---|
| You receive customers at an address | The address shown | Eligible for the local pack around the address; distance is calculated from that point |
| You travel to customers, with no premises open to the public | The address hidden + service areas | The listing shows with no address, with the areas; the ranking stays centred on the business's real location |
| Both (premises and call-outs) | The address shown + service areas | Both combined |
Google accepts up to 20 service areas (towns, postcodes, counties), within roughly two hours' drive. Declare the areas you genuinely serve, with the names people actually type. Three common mistakes: declaring the whole country (no effect, and a loss of credibility), creating listings with false addresses in every town in the area (suspension), and hiding the address when you do receive the public (lost visibility).
What Google really does with the service area
The service area is information shown on the listing and read by Google, but it doesn't replace distance: to rank businesses, Google relies on the company's location (the address, even hidden) and on the user's position. A plumber based in Nantes who declares Angers as a service area won't appear in Angers' local pack against Angers plumbers. The service area serves to qualify searches ("works in Rezé") and to reassure the user; it doesn't extend the ranking radius. That mechanism is detailed in understanding local ranking.
Attracting the right customers from the area
- Measure your current visibility radius with grid tracking (see tracking your position on Google Maps) and compare it with your real catchment area: the gap is your workstream.
- Concentrate the reviews : ask the customers in your main area first and invite them to mention their town ("a job in Vertou"). The words in reviews feed relevance.
- Create local pages for the towns in your main area where you have completed jobs, with their own content; see structuring your local pages.
- Publish localised completed jobs on the listing, with the neighbourhood or town named.
- Earn local citations and links in the area: associations, the press, partners (see local link building).
- Add local Google Ads with targeting by radius or by town, to cover the secondary area or the part of the main area where the local pack stays out of reach; see bringing local into SEO and SEA.
When the area exceeds what one listing can cover
A tradesperson working across a whole conurbation won't be in the local pack everywhere: the ranking radius is limited to a few kilometres in a dense area. Three responses, in order of cost: accept it and target the most profitable towns; cover the rest through the site (local pages ranking well in the organic results, which don't depend on distance) and through advertising; open a second real location (premises, a team) in the uncovered area, with its own listing, as described in multi-location local SEO.
How GreenRed helps
Rather than juggling several tools, GreenRed's Google Business Profile module brings these metrics together in a single dashboard, compares them over time and tells you which actions come first. You can try it free, with no card, from the Pricing.
Frequently asked questions
What is the service area in Google Business Profile?
The list of towns, postcodes or counties where you work, declared on the listing (up to 20 areas, within roughly two hours' drive). It is shown to users and read by Google, but it doesn't replace distance in the ranking: it informs, it doesn't extend the visibility radius.
Should you hide your address on the Google listing?
Only if you don't receive customers at that address (a tradesperson, a home service): Google then requires you to hide it and declare service areas. If you welcome the public, show the address: it is what makes the listing eligible for the local pack and what allows direction requests.
How do you appear in a neighbouring town's local pack?
Ranking depends on the distance between the user and your location; a neighbouring town outside your visibility radius is hard to reach with the listing alone. The levers are prominence (reviews, citations, local links) to widen the radius, the site's local pages for the organic results, and local Google Ads for immediate coverage.
How do you find your real catchment area?
Plot on a map the addresses of your customers over the last twelve months (billing, delivery, signed quotes) and identify the towns concentrating 70 to 80% of them. Complete it with the towns in the queries from the listing's statistics and the by-town conversion report in GA4.