Is the State/Territory search filter limited to one State/Territory?

No. The Interactive Widget Code Generator shows how you can restrict address searches to one State/Territory but you can include more than one if you wish.

To do this, add the address parameter "state_codes" into your widget Javascript and include the abbreviated state codes you wish to search as per the example below.

  
    var widget, initAF = function() {
      widget = new AddressFinder.Widget(
        document.getElementById("address_line_1")
        "WJPEXCD9AT8H63N7GQUY",
        "AU",
        {
          "address_params": {
            "state_codes": "NSW,VIC,ACT,SA"
          }
        }
      )
    }