THE TOLL

* 25 deaths, including three RFS volunteers and three aerial firefighters from the US

* 2448 homes destroyed (14,440 homes saved)

* 5.5 million hectares destroyed

* 11,400 bush and grass fires reported

THE RECORDS

* For six days over the season at least one region's fire rating was classified as "catastrophic"

* Most NSW properties lost in a single season

* Most hectares burnt in NSW in a single season

THE IMPACT

* Tourism sector is estimated to have lost $4.5 billion due to the blazes

* Between 650 million and 1.2 billion tonnes of carbon dioxide was emitted, equal to that emitted each year by commercial aircraft worldwide

* NSW government is considering elevating the koala's status from a 'vulnerable' to an 'endangered' species

* A wildlife survey conducted three months after fires in northwest NSW recorded a 90 per cent drop in ground-dwelling species, such as wallabies, bandicoots and skinks

Sources: NSW RFS, Climate Council

Australian Associated Press