A market town 20 miles north of York and 20 miles south of Middlesborough, in the Vale of York, between the Yorkshire Dales and Yorkshire Moors. In the District of Hambleton and County of North Yorkshire. It is symptomatic that any description of Thirsk starts out by describing other places - this is not York, Middlesborough; The Yorkshire Moors or Dales.
For external Thirsk, Sowerby and South Kilvington area links, try here. I don't propose to write another dull description of my home town.
A map showing where Hambleton (and Thirsk) are. I think it was produced by the District Council to demonstrate the place is strategically placed at the centre of the country and equidistant between the Shetland and Channel Islands; an ideal headquarters for any enterprise manufacturing in St. Hellier to sell its product in Sullom Voe.
Some of my rantings about Thirsk's failure to grow up.
A street map of Thirsk in pdf format, stolen from Hambleton District Council