A new report shows more than half of South Australians would wait until they are threatened by fire before leaving, but communities on Kangaroo Island and the Fleurieu are better prepared than most.

The report was released on Bushfire Resilience Day, which commemorates Ash Wednesday on 16 February 1983 when 75 people died and thousands of homes were lost across South Australia and Victoria.

It remembers and honours people who have died in South Australian bushfires and encourages positive actions for communities to prepare for the next bushfire.

Chief Officer Brett Loughlin AFSM says Bushfire Resilience Day is a significant date in South Australia's history.

"It is important to honour the lives lost to bushfires in the state and acknowledge the strength and resilience of those who have recovered and adapted post-fire," he says.

"The CFS continues to improve our response to incidents and has strong partnerships with our key stakeholders to improve bushfire preparedness within the community and increase the communities understanding of threats."

Preparedness attitudes and beliefs gathered from almost 2000 South Australians across the state has informed the Bushfire Archetypes Report released by the CFS, which describes the SA community in eight bushfire archetypes.

"Having solid data that describes the SA communities is pivotal in the work CFS is doing to understand bushfire preparedness attitudes and ensure public messaging and community engagement is meaningful to all communities and inspires action," Mr Loughlin says.

The report shows the most prepared archetypes are in the Adelaide Hills, Fleurieu Peninsula and Kangaroo Island, whilst the least prepared are in the Arid Lands, Murraylands and Riverland.

Minister for Emergency Services Joe Szakacs says Bushfire Resilience Day is the perfect day for South Australians to consider how they can be better prepared for the next bushfire.

"Resilience building is a shared responsibility between government, emergency management agencies, partner organisations, and local communities."

"The CFS is doing important work in rethinking how to communicate preparedness messaging with the aim of keeping South Australian communities safe and ready to respond in an emergency situation," he says.

"With climate change significantly impacting the predictability and length of the bushfire season, it is critical that we increase our understanding of how South Australians asses their risk so we can ensure they are prepared for the next bushfire."

The Bushfire Archetypes Report will be used by CFS and other key stakeholders to inform how to best improve bushfire preparedness and increase the communities understanding of threats.

Red Cross Community Resilience lead Shanti Ramasundram says the report will be helpful in developing more tailored approaches to target the community.

"We value the collaborative relationship we have with the CFS and there are numerous ways in which this research will benefit Red Cross' RediCommunities program, which is a place-based, community-led disaster resilience program that works alongside communities to strengthen their collective disaster resilience," she says.