As of July 2023, the country with the highest number of unicorns in the world is the United States. The United States has a total of 666 unicorns, followed by China with 316 unicorns, and India with 68 unicorns.

There are a number of factors that contribute to the high number of unicorns in the United States. These include:

• A strong venture capital ecosystem: The United States has a long history of venture capital investment, which provides funding for early-stage startups.
• A large and sophisticated technology market: The United States is home to some of the world's largest technology companies, which creates a demand for innovative new startups.
• A favorable regulatory environment: The United States has a relatively favorable regulatory environment for startups, which makes it easier for them to operate and grow.

China is also home to a large number of unicorns, due to its strong economic growth and its large population. India is also a rising star in the unicorn world, with a number of successful startups in the technology, e-commerce, and financial services sectors.

The number of unicorns in a country is a good indicator of the health of its startup ecosystem. It shows that there is a strong demand for innovative new businesses, and that there is a supportive environment for startups to grow and succeed.