A record-breaking 10.1 million overnight visitors came to or travelled within Western Australia (WA) over the course of 2015 and 2016.
These holidaymakers spent a combined total of $9.6 billion, with the two factors combining to spur significant growth in tourism for the region.
The growth is fuelled by a 16.6 per cent rise in staycationers - WA residents who are holidaying at home - with almost eight million people doing this over the course of the past 12 months.
Figures released by Tourism Research Australia as part of the National Visitor Survey (NVS) show that intrastate visitation in WA is not only continuing to grow but it is also increasing at a rate faster than the national average.
This applies across each of the three key measures of tourism growth - number of visitors, nights stayed and spend.
Colin Barnett, premier and tourism minister, said the NVS data also revealed the number of overseas holidays taken by West Australians dropped by four per cent.
Fewer trips taken to nearby Asian countries, such as Indonesia, Malaysia and Singapore, have fuelled this trend.
"This, combined with the strong growth seen in intrastate holiday travel, suggests more West Australians are taking domestic holidays instead of short-haul overseas holidays," Mr Barnett remarked.
"We have such a large state full of diverse experiences and landscapes and it's wonderful to see locals embracing that."
Intrastate visitor numbers in the 12 months ending June 2016 stood at 7.8 million, with the amount of nights they stayed increasing by 18.4 per cent to 31.7 million and the amount they spent up by a massive 24 per cent to $4.08 billion.
"These are significant results given interstate travel has been one of our weaker performing markets of late and a welcome positive reversal," Mr Barnett commented.