The largest city by population in Oceania is Sydney, which is located in Australia. As of 2021, the estimated population of Sydney is approximately 5.4 million people, making it not only the largest city in Oceania but also the most populous city in Australia.

Sydney, the vibrant metropolis situated in Australia, stands as the largest city by population in the Oceania region. As of the latest available data in 2021, Sydney boasts an estimated population of approximately 5.4 million people, solidifying its status as the most populous city not only in Oceania but also within the boundaries of Australia.

Nestled along the southeastern coast of Australia, Sydney is renowned for its iconic landmarks, diverse cultural offerings, and picturesque landscapes. The city's population growth reflects its attractiveness as a global destination and a hub of economic, cultural, and social activities.

Sydney's appeal extends beyond its sheer population size; it encompasses a dynamic blend of modernity and history. The iconic Sydney Opera House, with its distinctive architectural design, and the Sydney Harbour Bridge, spanning the scenic waters of Sydney Harbour, contribute to the city's international recognition.

The diverse population of Sydney represents a rich tapestry of cultures and backgrounds, creating a cosmopolitan atmosphere that adds to the city's allure. From its stunning beaches, such as Bondi and Manly, to the thriving business districts and bustling neighborhoods, Sydney continues to be a magnet for residents and visitors alike.

In conclusion, Sydney's position as the largest city in Oceania is not just a testament to its population size but also to its status as a global city that seamlessly blends modernity, cultural diversity, and natural beauty. The ongoing growth and vibrancy of Sydney contribute significantly to its standing as a key player in the Oceania region.