Chesterfield is twelve miles from Sheffield and twenty-four from Derby, and its commercial orientation is genuinely ambiguous. Many local businesses serve customers in South Yorkshire as readily as in Derbyshire, and a page that leaves that unclear loses enquiries from both directions.
The useful move is simply to say it. Naming the towns you actually cover on either side of the county boundary captures searches a county-level claim will never reach.
The commercial value here is unusually high
Cost per click for Chesterfield terms runs well above the regional average, which tells you the customers are worth more than the town's size suggests. That makes organic and AI visibility disproportionately valuable, because the paid route is expensive.
The former coalfield and the Peak edge
Chesterfield sits between two quite different landscapes. To the east lies the former north Derbyshire coalfield — Bolsover, Clay Cross, Staveley — with its own economy and demographics. To the west the ground rises into the Peak District within a few miles, bringing tourism, holiday accommodation and rural property services.
Those are different customers. A business serving both should say which towns and which villages, rather than claiming north Derbyshire generally.
The crooked spire is a genuine asset
Chesterfield has a real visitor draw and a substantial market tradition, which supports hospitality, retail and tourism businesses serving people planning a trip rather than residents. That audience searches differently and usually needs its own page.
What we would do first
State the catchment explicitly, including the Sheffield side. Then the fundamentals — the competition here is moderate rather than thin, but nothing about it is out of reach.