Key Takeaways
- 18.6 billion IoT devices connected globally as of 2024
- 64.6% increase in just four years (from 11.3B in 2020)
- 55 billion devices projected by 2035, nearly tripling current count
- Each device is a potential entry point for cyberattacks
The Story Behind the Numbers
The Internet of Things (IoT) is expanding faster than most people realize. IoT devices are everyday objects connected to the internet – from smart thermostats and fitness trackers to security cameras, connected cars, and industrial sensors.
As of 2024, there are 18.6 billion connected IoT devices worldwide. That’s more than double the human population. Just four years earlier in 2020, that number was only 11.3 billion. This represents a 64.6% increase in active IoT connections in just four years, which helps explain how the world now generates 402 million terabytes of data every day.
The growth isn’t slowing down. Forecasts suggest we’ll reach 55.0 billion devices by 2035, nearly tripling today’s count. This explosion of connected devices means more of our world – from home appliances to city infrastructure – will be online and vulnerable without proper security measures.
Why This Data is Important
Every connected device is a potential entry point for hackers. More IoT devices mean a larger attack surface for cybercriminals to exploit.
Many IoT devices ship with weak default passwords or outdated firmware. As the number of devices grows from 18.6 billion to a projected 55.0 billion, the security risks multiply. A compromised smart camera or thermostat can expose your entire home network, making it easier for attackers to track your IP address and monitor your activity.
For users with smart home devices or gaming online, securing your network with proper encryption protocols becomes essential as device counts increase.
Looking Ahead: Future Outlook
The IoT landscape will continue expanding rapidly. By 2030, we’re projected to hit 39.0 billion devices – more than doubling current levels in just six years.
This growth creates both opportunity and risk. Users must prioritize network security now, before their homes become digital ecosystems with dozens of vulnerable endpoints. The time to act is today, not when you’re managing 50+ connected devices.
Source & Methodology
All data comes from IoT Analytics, which tracks global IoT device deployments. Figures from 2020-2024 represent actual counted devices. Projections from 2025-2035 are forecasts based on industry trends, adoption rates, and market analysis.