Saying you serve Denver tells an Aurora homeowner nothing useful
Denver is a city and county with separate jurisdictions on every side, so the word Denver on your homepage answers a question nobody asked.
A homeowner in Aurora, Lakewood or Thornton has learned to read the word Denver as a region, not a promise. They want to see their own town, or at least their own county, before they will believe you dispatch to them.
Put the coverage above the fold and make it specific. Name the counties and the places you actually serve, and make the list honest. Claiming the whole Front Range and then declining a Castle Rock call costs you a review as well as a job.
If your coverage changes by time of day or by job size, say so. A visitor who reads that you take same day work within a defined area and scheduled work further out will self select, which saves your dispatcher a call.
Put the same information in the page title and the header, not only on a buried service area page.