Orange and Osceola are one circuit with two courthouses
The Ninth Judicial Circuit covers both counties, but the answer a client actually needs depends on which one their case sits in, and that is two sets of pages rather than one.
The Ninth has served Orange and Osceola in its present configuration since 1973 and is one of the largest circuits in the state. Same circuit, same bench structure, two counties, and clients who type a county name because the circuit number means nothing to them.
Search follows that instinct. A parent in St. Cloud or Poinciana rarely searches for Orlando, and a firm whose entire site is written around the word Orlando is invisible to that query even though the matter will be heard by the same court.
So build one page for filing in Orange and one for filing in Osceola. Where the courthouse is, what the first appearance generally involves, which documents tend to get asked for early, what the practical rhythm of a case looks like there. Keep the language general and say plainly that procedure varies and is worth confirming with the clerk or with counsel.
The law is not what differs. What differs is that the person searching believes their county is their problem, and the page that names their county gets the click.