BACKGROUND: Traumatic dental injuries (TDIs) are becoming a worldwide phenomenon owing to their variable prevalence, and their etiology is considered multifactorial and complex in interactions among various risk factors. These are preventable if risk factors are analyzed and interpreted in all possible scientific manners. The objective of this study was to assess the various environmental risk factors (places of occurrence of TDI) among World Health Organization (WHO) index-aged children and adolescents (12 and 15 years). MATERIAL AND METHODS: This was the epidemiological cross-sectional study conducted in Aligarh City, Uttar Pradesh, India, in the year 2018, with a sample size of 1000. Multistage random sampling technique was employed. Study data were collected by doing dental examination and structured interview with self-prepared pro forma in ten randomly selected sampling sites (schools) from different regions of the city. Subsequently, data were entered in an Excel sheet and then analyzed with the Chi-square test using the Statistical Package for the Social Sciences (SPSS) software. RESULTS: Overall, school (63; 46.7%) was found to be the most prevalent environmental risk factor for TDI followed by home (37; 27.4%), roadside (10; 7.4%), and playground (9; 6.7%). Fifteen (11.1%) affected individuals were not able to recall the place of the TDI incident, while 0.7% (1) had TDI occurrence in other places. Among 12-year index-aged children, home (15; 34.1%) was the most common place of TDI in rural regions, while school (27; 67.5%) was the most frequent place of TDI in urban regions. Among 15-year index-aged adolescents, school (19; 59.4%) was found to be the most common place in rural regions, whereas school (9; 47.4%) was the most frequent place of TDI in urban regions. CONCLUSION: Environmental factors, especially school premises, infrastructure, and playing facilities, need to be upgraded and built with an emphasis on a safer environment for children. Teachers, parents, and school children should be educated and made aware of the preventive measures for dental injuries in schools and homes. Appropriate safety gears should be mandatory to use among children and adolescents during outdoor sports and recreational activities.