In Hong Kong and Macau: 粤语 is the dominant language of everyday life. It's used in business, government, education, and the media. Any visitor or expatriate living there will find learning at least basic Cantonese essential for deep cultural integration.
In Guangdong Province: In cities like Guangzhou (Canton) and Shenzhen, 粤语 is still the primary language for informal, daily communication among locals. You'll hear it in markets, on local buses, and in family homes. However, Mandarin is the language of schooling, official business, and is increasingly used by younger generations and migrants from other provinces.
Overseas: For much of the 20th century, Cantonese was the lingua franca of Chinatowns across North America, Europe, and Australia due to migration patterns from Guangdong and Hong Kong. While recent migration from other parts of China has increased the prevalence of Mandarin, Cantonese remains a vital community language in these historic diasporas.
For Learners: Students often choose to learn 粤语 for specific reasons: to connect with their family heritage, to work or live in Hong Kong, or because of a passion for Hong Kong culture (film, music, cuisine).