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UK Sales Territory Map

Divide the UK into sales territories by postcode. Add your bases, balance by population or distance, edit by hand, export to CSV. Free, no signup.

By Dan · Updated September 2026

Add your bases and split the UK into territories by nearest base, reach, or population. Every territory stays in one connected piece, and if an equal split isn't possible, the tool says so. Use it for sales territories, delivery zones, franchise or engineer patches, or any coverage area built around a set of base locations.

Bases

or

Drag a file here, or click to browse. CSV/TSV/TXT only. Map your own column headers to territory, postcode and any extra fields on the next screen.

Add one base at a time

Export

CSV: one row per postcode sector, with manual/locked flags. GeoJSON/KML: territory boundaries for GIS tools.

Northern Ireland is shown for reference but not covered. Its postcode data is licensed separately from the rest of the UK and isn't available under an open licence, so no Northern Ireland postcode is included in any territory.

How to Use the Territory Mapper

  1. Paste your base list (or upload a CSV) with a territory name and postcode per base.
  2. Choose how to split: nearest base, reach from each base, or balance by population.
  3. Click any sector on the map to reassign it to another territory.
  4. Export your territories to CSV, GeoJSON or KML.

Why Use a Territory Mapper?

Create a sales territory map for free

Split the UK between your depots, reps or franchises by postcode. There's no signup and no trial wall to work around: the tool is free to use from the first load, not free until a limit or a timer runs out.

Territory mapping that tells you the truth

Every territory stays in one connected piece as drawn, not scattered fragments joined only on a spreadsheet. If an equal population split isn't achievable from your bases, the tool reports the shortfall and shows the closest honest split instead of pretending one exists. If a manual edit would disconnect a territory, you get a warning at the point you make it, and the choice stays yours.

Balance territories by population or reach

Split by nearest base for the simplest starting point, by population to keep territory sizes fair, or by reach to cap how far any one territory extends beyond a base. Set reach as a straight-line radius from each base to match the way your territories actually need to work.

Export territories to CSV, GeoJSON or KML

Every export carries its own provenance. Sectors you've reassigned by hand are marked as manual, separately from sectors the solver placed and any you've locked in place, so a spreadsheet can filter your own decisions from the solver's without cross-referencing anything else.

Frequently Asked Questions

What is the difference between this and the Postcode Mapper?

The Postcode Mapper plots a list of postcodes on a map. The Territory Mapper divides the UK between your bases and lets you edit the result.

Can I colour a postcode map into territories?

Yes. Every postcode sector on the map is filled with a distinct colour for its territory, and a colourblind-safe palette is available. Reassign any sector by hand if you disagree with the automatic split and its colour updates immediately. This colours postcodes by territory membership, not by a data value like sales or population.

Can territories be balanced by population?

Yes. If an equal split is not achievable from your base locations, the tool says so and shows the closest split that keeps every territory connected.

Why is a sector in a territory I did not expect?

Some boundaries are decided by very small margins. Click any sector to see its distance to each base, and reassign it if you know better.

Are islands included?

Scottish islands and the Isle of Wight are included. The Isle of Man and Channel Islands have no location data in this tool and it says so rather than guessing. Northern Ireland is not covered.

Is Northern Ireland covered?

Northern Ireland is shown on the map for reference but not covered. Its postcode data is licensed separately from the rest of the UK and isn't available under an open licence, so no Northern Ireland postcode is included in any territory.

Is it free?

Yes, fully free, no signup.

Related Guides & Tools

Get more from your mapping with these resources:

  • UK Counties and Councils - Want your territories to line up with real council or constituency boundaries rather than a nearest-base split? Check them here first.
  • Postcode Mapper - Just want to plot a list of postcodes on a map? Use this instead.
  • Drive Time Map - See how far you can drive from a single base before splitting territories between several.
  • Radius Map - Draw a simple straight-line circle around one location.
  • Data Sources - Where our data comes from and how it's updated.
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