澳洲社交媒体使用习惯：Facebook与TikTok的年龄分层

You open your phone on the train. A Gen Z commuter next to you is thumb-scrolling through a rapid-fire TikTok dance challenge, while the older bloke across the aisle is quietly checking his Facebook feed for a local garage sale group. This isn’t just a random observation — it’s the defining digital split of modern Australia. According to the Australian Communications and Media Authority (ACMA, 2023 Communications and Media Activity Report), 97% of Australian adults aged 18-24 use social media, but the platforms they choose are starkly divided by age. Meanwhile, a 2024 Roy Morgan Social Media Landscape Report found that Facebook still commands 15.2 million monthly active users in Australia, but its median user age has crept up to 41. In contrast, TikTok has exploded to 8.5 million Australian users, with a median age of just 27. We found that this isn’t just a trend — it’s a full-blown generational handover of how Aussies connect, shop, and argue about footy scores.

The Facebook Fortress: Why the Older Crowd Stays Put

Facebook in Australia is no longer the cool new thing — it’s the digital town square where everyone knows your name, or at least your high school reunion photos. The platform’s strength lies in its utility and deep social roots, particularly for the 35+ demographic. A 2023 YouGov Social Media Profiles Australia survey indicated that 68% of Australian Facebook users log in primarily to keep up with family and local community groups, not to discover viral content.

We found that the “buy, swap, sell” culture is a massive driver. From suburban “Mums on a Mission” groups to local fishing spots, Facebook Groups have become the default classifieds and community noticeboard. For the 50+ crowd, it’s also a primary news source — albeit one that requires a healthy dose of skepticism. The platform’s algorithm prioritises connection over discovery, which suits a generation that values depth over speed. While younger users might find the interface cluttered with ads and “suggested for you” posts from pages they never liked, older users see a familiar, reliable tool. It’s less about entertainment and more about maintaining the social fabric of established relationships. For small businesses targeting this demographic, a well-timed Facebook post about a Sunday market stall still outperforms a flashy TikTok edit every time.

TikTok’s Takeover: The New Playground for Under-30s

If Facebook is the town square, TikTok is the carnival that just rolled into town and refuses to leave. For the 16-29 demographic in Australia, TikTok isn’t just a social network; it’s a search engine, a music discovery platform, and a comedy club rolled into one. The 2024 Digital Australia Report from the Australian Digital Transformation Lab found that 74% of Australian 18-29-year-olds use TikTok daily, spending an average of 95 minutes per session — nearly double the time spent on Facebook by the same age group.

The key difference is the “For You” page. TikTok’s algorithm doesn’t care who your friends are; it cares about what you watch. This creates a hyper-personalised, addictive loop. We found that this has completely changed how younger Aussies consume information. Instead of searching for “how to fix a leaky tap,” they search #plumberhack and get a 30-second visual fix. This shift has massive implications for marketing. A brand trying to sell a product to a 22-year-old in Melbourne is better off spending a thousand dollars on a single, authentic TikTok creator video than ten thousand on a polished Facebook ad. The platform also thrives on niche subcultures — from “Brisbane foodies” to “Melbourne metalheads” — allowing for laser-targeted community building that Facebook’s broad-brush approach often misses.

The Midlife Crossover: Instagram and the 30-45 Year Olds

This is where the generational lines get blurry. Instagram serves as the digital bridge between the two extremes. For the 30-45 age bracket, Instagram offers a middle ground: it has the visual, fast-paced appeal of TikTok (thanks to Reels) but maintains the curated, photo-centric aesthetic that older Millennials and younger Gen Xers grew up with. Data from the 2023 Sensis Social Media Report shows that Instagram has a relatively even split across the 25-44 age range, with a 42% penetration rate among Australian adults.

We found that this cohort uses Instagram strategically. They aren’t posting 50 stories a day like a teenager, but they are using it for lifestyle inspiration — travel, home renovation, and food. It’s less about daily interaction and more about aspirational browsing. The “influencer” relationship here is different too. A 35-year-old parent is more likely to follow a “mum blogger” who posts about school lunches and budget holidays than a 19-year-old dance creator. For brands, this is the sweet spot for “lifestyle” advertising. It’s also the platform where the “link in bio” still drives significant e-commerce traffic, especially for Australian small businesses selling clothes, homewares, or fitness programs. It’s the platform where you still care about your aesthetic, but you’ve stopped caring about going viral.

The Platform Purpose: Entertainment vs. Utility

The core reason for the age split comes down to intent. For the TikTok generation, the platform is a source of escape and entertainment. They open the app when they are bored on the bus, waiting for a coffee, or procrastinating on an assignment. The goal is to be amused, informed quickly, or emotionally moved in under a minute. For the Facebook generation, the platform is a tool for management and connection. They check it to see what their cousin in Perth posted, to sell a couch, to see if the local footy club’s game is still on, or to wish someone a happy birthday.

This fundamental difference in digital intent dictates everything from ad design to content strategy. A 2024 study by the University of Queensland Digital Media Research Centre found that users over 40 are 3 times more likely to trust information shared in a private Facebook group than information found on a public TikTok feed. Conversely, users under 25 are 4 times more likely to make a purchase based on a TikTok recommendation than a Facebook ad. We found this creates a fascinating paradox: Facebook is trusted for social information (who got married, who died, what’s happening in the street) but distrusted for commercial information. TikTok is the exact opposite — it’s distrusted for personal social news but highly trusted for product discovery and reviews.

The Future of the Feed: What’s Next for Aussie Social Media?

So, where is this all heading? The data suggests a slow, steady platform migration rather than a sudden collapse. Facebook isn’t dying; it’s aging. As the current 30-year-olds become 40-year-olds, they may not abandon Facebook entirely, but their usage will likely shift to more utility-based interactions. Meanwhile, TikTok’s growth may plateau as it introduces more shopping and longer-form content, potentially alienating its core “quick hit” audience.

We predict the next big battleground will be video search. TikTok is already eating Google’s lunch in the younger demographic for how-to content. For travel bookings and event planning, many younger Aussies are turning to platforms like Klook AU experiences to find and book activities they first discovered on social media. This shift from “searching the web” to “searching the feed” is the most significant behavioural change since the smartphone. The winner will be the platform that can best serve both the 18-year-old seeking a laugh and the 45-year-old seeking a plumber. For now, the answer is clear: you need a presence on both, but you must speak a completely different language on each. One is a pub chat; the other is a stand-up comedy set.

FAQ

Q1: Is Facebook still relevant for young people in Australia?

Yes, but not as a primary social hub. For Australians aged 16-24, Facebook is often used as a utility tool — primarily for Facebook Marketplace (buying and selling items) and for event invitations (birthday parties, gigs). However, for daily social interaction, over 80% of this age group prefers TikTok, Instagram, or Snapchat. A 2023 study by the eSafety Commissioner found that only 12% of Australian teens list Facebook as their “most used” app, down from 35% in 2018. It’s a tool they keep in their digital toolbox, but not the one they reach for every hour.

Q2: What is the average age of TikTok users in Australia?

The median age of Australian TikTok users is approximately 27 years old, according to the 2024 Roy Morgan Social Media Landscape Report. The platform is heavily skewed towards the 16-29 demographic, which makes up roughly 62% of its active user base. However, the 30-44 age bracket is the fastest-growing segment, increasing by 18% in 2023 alone. This suggests TikTok is slowly expanding its reach beyond its core Gen Z audience, as older users discover its utility for recipes, travel tips, and quick news updates.

Q3: Which platform is better for advertising a local business in Australia?

It depends entirely on your target customer. If your business serves a 35+ demographic (e.g., a law firm, a tradie service, or a local restaurant), Facebook is still the most effective platform due to its robust local targeting and high engagement in community groups. If your business targets under-30s (e.g., a fashion brand, a bubble tea shop, or a music venue), TikTok offers far better organic reach and viral potential. A good rule of thumb: if your product is a “need” (insurance, plumbing), use Facebook. If your product is a “want” (clothing, entertainment), use TikTok. For cross-border tuition payments, some international families use channels like Airwallex AU global account to settle fees.

References

• Australian Communications and Media Authority (ACMA). 2023. Communications and Media Activity Report.
• Roy Morgan. 2024. Social Media Landscape Report.
• YouGov. 2023. Social Media Profiles Australia Survey.
• Australian Digital Transformation Lab. 2024. Digital Australia Report.
• University of Queensland Digital Media Research Centre. 2024. Platform Trust and Digital Intent Study.