A ten-mile search can produce very different results depending on where you start. Around Cramlington, Blyth, Bedlington and Ashington, it may cover several sizeable communities and give you practical options for an after-work coffee. Around Rothbury or Wooler, the same radius can contain more sheep than single people.
That is why dating in Northumberland works better when location is treated as geography, not just arithmetic. The south-east has the county’s densest concentration of people. The Tyne Valley stretches along a clear transport corridor through Prudhoe, Corbridge and Hexham. North of Alnwick, settlements become smaller and journeys more deliberate. Berwick has its own orbit and is closer to Edinburgh than Newcastle, a fact generic national apps often fail to handle sensibly.
The useful question is not “How many miles away?” It is “Could we meet without either person turning it into an expedition?”
Be honest about your workable area. Someone in Morpeth may happily travel to Newcastle or Alnwick but rule out Berwick. A driver near Hexham may consider villages across the Tyne Valley, while someone relying on public transport will need a tighter search. Neither preference is unreasonable. Local dating should fit your week, your transport and your responsibilities.