How many babies in Australia have been named Sebastian?

Between 2000 and 2025, Sebastian was registered for 11,819 babies in the available state datasets.

Is Sebastian a popular name in Australia?

In 2025, Sebastian ranked #30 among boys' names in Australia, with 535 registrations.

boys' name 2000–2025

Sebastian is making a comeback — from #86 in 2000 to #30 in 2025.

#30 ranked in 2025

535 registrations in 2025

11,819 total 2000–2025

That's a jump of 56 positions. Registrations grew from 144 to 535 (+272%).

Peak popularity: 2014 (642 registrations, ranked #36).

Peak 2014 · 642

Low 2000 · 144

Years tracked 26

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#30 Sebastian 535

How often Sebastian was registered in each of the 8 Australian states and territories.

Sebastian — popularity by state & territory in 2025. Hover a state for details, click to view the full Top 50 for that state.

Show full data table

Most popular in Victoria (183 babies) , least popular in South Australia (49).

Victoria

183 #29

New South Wales

179 #31

Queensland

124 #36

South Australia

49 #22

Australian Capital Territory

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Northern Territory

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Tasmania

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Western Australia

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In 2025: 535 babies named Sebastian across 4 of 8 states and territories.

How many babies in Australia have been named Sebastian?: Between 2000 and 2025, Sebastian was registered for 11,819 babies in the available state datasets.
Is Sebastian a popular name in Australia?: In 2025, Sebastian ranked #30 among boys' names in Australia, with 535 registrations.