- Continental United States: California is located on the West Coast of the continental United States, while Hawaii is an archipelago in the middle of the Pacific Ocean.
- Size: California is the third largest state in the US by area, while Hawaii is the 50th and smallest.
- Population: California has a population of over 39 million people, making it the most populous state in the US, while Hawaii has a population of just over 1.4 million.
- Climate: California has a variety of climates, from the Mediterranean climate of the coast to the desert climate of the inland valleys, while Hawaii has a tropical climate.
- Economy: California has a large and diverse economy, with a GDP of over $2 trillion, while Hawaii's economy is smaller and more focused on tourism.
- Infrastructure: California has an extensive network of highways, railways, and airports, while Hawaii's infrastructure is less developed.
- Culture: California has a diverse culture, with a mix of American, Latin American, and Asian influences, while Hawaii's culture is more Polynesian and Asian.