Kathmandu is a melting pot of Nepal's diverse ethnicities, though the indigenous Newar people are the original creators of the city's distinctive monument architecture.
| Demographic Category | Primary Groups / Statistics | Notes | | :--- | :--- | :--- | | **Ethnic Composition** | Newar, Hill Brahmin, Chhetri, Tamang | The Newars are the historical inhabitants and architects of the Valley's heritage. | | **Primary Religions** | Hinduism (~81%), Buddhism (~9%), Islam, Christianity | Hinduism and Buddhism heavily syncretize in Kathmandu's monuments. | | **Languages Spoken** | Nepali (official), Nepal Bhasa (Newari), English | English is widely spoken in tourist and monument areas. | | **Age Distribution** | Median age ~25 years | A highly youthful urban population driven by internal migration for education and work. |