Robots are now active in virtually every major industry, from factory floors to operating rooms to hotel hallways. The global count of operational industrial robots alone hit 4 million units in 2023, according to the International Federation of Robotics, and that number doesn’t include the millions of service, medical, and consumer robots working alongside them. Here’s where you’ll find them and what they’re actually doing.
Manufacturing and Factory Work
Factories remain the single largest employer of robots. The global average robot density reached a record 162 units per 10,000 employees in 2023, double what it was just seven years earlier. South Korea leads the world at 1,012 robots per 10,000 workers, driven largely by its electronics and automotive sectors, which are the two biggest customers for industrial robots worldwide.
On a typical automotive assembly line, robots handle welding, painting, part assembly, and quality inspection. They work in conditions that are dangerous or repetitive for humans: extreme heat near welding arcs, toxic fumes in paint booths, and the physically punishing pace of lifting heavy components thousands of times a shift. Electronics manufacturing relies on robots for a different reason. Circuit boards and semiconductor components require placement precision measured in fractions of a millimeter, far beyond what human hands can consistently deliver at speed.
China has built the largest robot stock of any single country, with nearly 1.8 million operational units in its factories as of 2023. That’s more than any other nation and reflects the country’s massive push to automate manufacturing as labor costs rise.
Surgery and Hospital Care
Robotic-assisted surgery has moved well past the experimental stage. In 2024, roughly 2.68 million surgical procedures were performed using Intuitive Surgical’s da Vinci systems alone, a 17% jump from the previous year. The fastest-growing categories were general surgery procedures in the United States (up 19%) and cancer-related procedures outside the U.S. (up 23%).
During a robotic-assisted operation, the surgeon sits at a console a few feet from the patient, controlling miniaturized instruments through small incisions. The robot translates the surgeon’s hand movements into smaller, steadier motions, filtering out the natural tremor in human hands. For patients, this typically means less blood loss, smaller scars, and shorter hospital stays compared to traditional open surgery. Prostate removals, hysterectomies, hernia repairs, and certain cardiac procedures are among the most common applications.
Beyond the operating room, hospitals use robots for pharmacy dispensing, transporting lab samples through hallways, and disinfecting patient rooms with UV light. These logistics robots free up clinical staff to spend more time on direct patient care.
Hotels, Restaurants, and Service Industries
If you’ve stayed at an Aloft hotel (part of Marriott), you may have had a robot deliver your toothbrush. Their Relay robot navigates hallways and elevators independently, carrying snacks, towels, and room service items directly to guest rooms. It was one of the first autonomous delivery robots deployed by a major U.S. hotel brand.
The Keenon W3 delivery robot has become especially popular in the hospitality industry, operating in Hilton and Hyatt properties among more than 10,000 venues globally. A single unit can handle over 300 deliveries per day, roughly equivalent to the workload of one and a half full-time staff members. YOTEL hotels in New York and Singapore use a robotic luggage storage system called Yobot that stashes and retrieves bags automatically. Japan’s Henn-na Hotel chain has leaned even further into the concept, staffing its front desk and concierge services with robots.
Restaurants use similar technology. Delivery bots from companies like Bear Robotics carry plates from kitchen to table, handle bussing, and navigate around diners. These are most common in fast-casual and high-volume establishments where the repetitive loop of carrying food is a bottleneck.
Agriculture and Farming
Farming robots are gaining ground, though commercial adoption varies widely by crop. Autonomous tractors and GPS-guided equipment for planting and spraying are already standard on large-scale grain farms. The newer frontier is precision weeding: small, lightweight robots that move under crop canopies using artificial intelligence to distinguish weeds from crops, then remove or spray only the weeds. These machines are environmentally friendly because they dramatically reduce the volume of herbicide needed.
For row crops like corn and soybeans, robotic weeding systems are still in development and not yet commercially available. But for specialty crops like lettuce, strawberries, and grapes, commercial robotic harvesters and weeders are already operating in fields. Fruit picking is one of the hardest problems in agricultural robotics because it requires the robot to identify ripe produce, grasp it gently enough to avoid bruising, and work around irregular plant structures. Progress has been steady, driven by chronic labor shortages in seasonal farmwork.
Warehouses and Delivery
E-commerce has transformed warehouses into some of the most robot-dense environments outside of automotive plants. Amazon alone operates hundreds of thousands of mobile robots in its fulfillment centers, shuttling shelving units to human pickers who then select individual items. This approach cuts the walking time that used to consume a huge portion of a warehouse worker’s shift.
Autonomous mobile robots (often low, flat platforms that slide under shelving) sort packages, move pallets, and stage orders for shipping. Outside the warehouse, delivery robots are a growing presence on sidewalks in select cities and on college campuses, carrying food and small packages the final stretch to a customer’s door. Drone delivery has also launched commercially in limited areas, with companies operating in parts of the U.S., Europe, and Australia for lightweight pharmacy and grocery orders.
Disaster Response and Public Safety
When buildings collapse, floodwaters rise, or hazardous materials spill, robots increasingly go in first. Disaster robotics uses three main types of platforms: aerial drones, ground robots, and underwater vehicles. Each fills a different role.
Aerial drones provide a bird’s-eye view that helps rescue teams locate survivors, assess structural damage, and identify safe routes for navigation. Ground robots, often tracked vehicles resembling small tanks, can enter unstable rubble to search for signs of life using cameras and sensors, keeping human rescuers out of danger. Underwater robotic vehicles have been deployed after hurricanes to inspect submerged bridge foundations and scan for underwater landslide activity using sonar. After Hurricane Ike struck Galveston, Texas in 2008, underwater robots were used for post-disaster bridge inspection. Unmanned surface vehicles were also tested after Hurricane Wilma in 2005, checking their ability to navigate underneath small docks and operate around bridges in strong currents.
Police and military bomb disposal teams have used ground robots for decades, and the technology has expanded into routine building searches and hazardous material handling.
Everyday Life and Consumer Robots
The most common robot most people interact with is the robotic vacuum cleaner. Millions of units from brands like iRobot and Roborock operate in homes worldwide, mapping rooms and cleaning floors autonomously. Robotic lawn mowers work on the same principle, cutting grass within a defined boundary without human supervision.
Personal assistant robots and companion robots for elderly care are a smaller but growing category. In Japan, social robots are used in senior care facilities to provide conversation, remind residents to take medication, and lead light exercise sessions. Educational robots teach coding and problem-solving to children, while telepresence robots let remote workers or patients “attend” meetings or classrooms through a mobile screen on wheels.
The range of places robots operate continues to expand rapidly. Mining companies use autonomous haul trucks in open-pit mines. Underwater robots inspect oil pipelines and offshore wind turbines. Robots clean solar panels in desert installations where water is scarce. Construction sites are beginning to use bricklaying and rebar-tying robots. In nearly every case, the pattern is the same: robots take on tasks that are dangerous, physically exhausting, or require a level of precision and consistency that humans struggle to maintain over long shifts.