INTRODUCTION
This page show statistics about UFOs including geographic distribution of sightings, shape of UFOs, number of sightings in different periods and other interesting facts.
Charts
1. Share of UFO Sightings 1940 – Present by Global Region
2. Notable UFO Sightings 1940 – Present by Global Region and Decade
3. Number of UFO Sightings in USA Investigated by Air Force and Outcome of Investigation 1947 – 1969
4. UFO Sightings by Shape in National UFO Reporting Center
This chart shows the regional distribution of notable UFO sightings from 1940 to the present based on Wikipedia’s list of well-known incidents. While this dataset is not scientific and reflects only “notable” cases rather than all reported sightings, it still provides some interesting patterns about where UFO reports tend to gain attention.
North America overwhelmingly dominates the list, accounting for about 63.6% of notable sightings. This is largely due to the long history of UFO culture in the United States, where events such as the 1947 Roswell incident helped popularize the subject. The U.S. also has a large aviation industry, extensive radar coverage, and a strong media environment that publicizes unusual sightings.
Western Europe ranks second with around 20%, reflecting several well-known incidents in countries such as France and the United Kingdom. Other regions—including Latin America, Sub-Saharan Africa, Eastern Europe, and Oceania—make up much smaller shares.
Overall, the distribution likely reflects differences in media coverage, reporting culture, and documentation rather than the actual global frequency of unexplained aerial phenomena.
This chart shows notable UFO sightings from 1940 to the present, broken down by decade and global region using the same Wikipedia-based dataset. As with the previous chart, the data reflects widely reported or “notable” sightings rather than all reported incidents, but it still reveals several interesting historical patterns.
The 1940s and 1950s show the largest number of notable sightings, particularly in North America. This period coincides with the early Cold War, when rapid advances in aviation, missile technology, and radar systems led to increased attention to unusual aerial phenomena. The famous 1947 Roswell incident and the broader rise of UFO culture in the United States helped generate significant public interest during this era.
Sightings decline somewhat in later decades but remain heavily concentrated in North America and Western Europe. Smaller numbers of cases appear in Latin America, Sub-Saharan Africa, Eastern Europe, and Oceania.
Overall, the distribution over time likely reflects changing levels of media attention, government secrecy during the Cold War, and evolving public interest in unexplained aerial phenomena rather than a true change in the frequency of sightings.
This chart shows the number of UFO sightings in the United States investigated by the U.S. Air Force between 1947 and 1969, along with whether the sightings were ultimately explained or remained unexplained. The data comes from investigations conducted under programs such as Project Blue Book, which examined thousands of reported incidents during the early Cold War period.
One year stands out clearly: 1952. That year saw an enormous spike in reported sightings, with far more cases investigated than in any other year in the dataset. Much of this surge has been linked to a wave of sightings across the United States during the summer of 1952, including several highly publicized radar and visual sightings around Washington, D.C. The sudden increase generated intense media coverage and public interest in UFOs.
Despite the high number of reports, the vast majority of cases investigated by the Air Force were eventually explained as natural phenomena, aircraft, balloons, or observational errors. Only a small fraction remained officially unexplained.
After the early 1950s peak, the number of investigations fluctuated but generally declined toward the end of the 1960s, before Project Blue Book was eventually closed in 1969.
This chart shows the distribution of UFO sightings by reported shape based on data from the National UFO Reporting Center. Interestingly, the most common reported shape is not the classic “flying saucer” often depicted in popular culture. Instead, orb-shaped objects account for the largest share of sightings at around 28%. These are typically described as glowing spheres or balls of light moving through the sky.
Triangular objects are the second most frequently reported shape, making up about 19% of sightings. Triangle sightings have often attracted attention because witnesses sometimes describe large, silent craft with lights at the corners. Other commonly reported shapes include fireballs and discs, each accounting for roughly 9–10% of sightings.
The classic disc or saucer shape—closely associated with UFO imagery in films and media—appears less frequently in reported sightings than many people might expect.
Overall, the data suggests that real-world UFO reports tend to involve simple light-like shapes such as orbs rather than the more elaborate spacecraft designs often portrayed in popular culture.