What is biggest city in kerala?

The biggest city in Kerala is Thiruvananthapuram, also known as Trivandrum. It is the capital city of Kerala and has a population of over 2.5 million people in its urban agglomeration. Thiruvananthapuram is located on the west coast of India, overlooking the Arabian Sea. It is a major academic and research hub, with several reputed universities and research institutes located in the city. The city is also known for its rich cultural heritage, with a number of museums, art galleries, and historical monuments. Thiruvananthapuram is also a major tourist destination, with several popular attractions such as Kovalam beach, the Padmanabhaswamy Temple, and the Vizhinjam Lighthouse. The city is well-connected by air, rail, and road, with an international airport and several major railway stations serving the city.