5 Major Cities In California - World's Largest Sub-National Economy

Los Angeles is the top major and most populous city in California. The city is known for Hollywood Hills
San Diego, San Francisco, San Jose and Fresno are four other major cities in California

Top 5 Major Cities in California: The largest state in USA by population and third largest by area is California. Nicknamed The Golden State California is home to 40 million residents. The state constitutes the largest economy among all states in USA with GSP (Gross State Product) of more than $4.3 trillion making it the world’s largest sub-national economy. As an Independent country California would be the world’s fourth largest country by nominal GDP.

The economy of California is led by agriculture with an annual revenue of close to $60 billion. The state has 25.3 million acres of farmland on which farming of 400 different types of crops are done. California is primarily known for almonds production. It is interesting to note that 80% of world’s commercial almonds are produced in California. It is also the undisputed leader in dairy sector as it supplies 20% of total milk production in USA via 1,100 specialized farms located throughout the state, majority of them are concentrated in Central Valley.

90% of all grapes produced in USA are grown in California. The state produces 80 different varieties of grapes which includes Wine grapes, Table grapes, Raisin grapes etc. The grapes industry alone in California is valued at $3 billion. Apart from grapes California is also the top tomato producing state in USA.

The iconic landmark Hollywood Hills is in Los Angeles, California. It is considered as the heart of American Film Industry and it constitutes a major part in the state’s economy. As of 2025 this industry has an economic output of $5 billion on the state. 40% of the goods imported to USA channels through California. This marks the state’s importance in nation’s supply chain.

*Hollywood Hills captured in a beautiful sunset view*

Table of Contents

Los Angeles – The Most Populous City in California

Home to 4 million residents Los Angeles is the most populous and top major city in California. The city is also known as The Entertainment Capital of the world as it is the oldest hub in USA for television production. Many also call Los Angeles The Heart of American Film Industry. Infamous Hollywood Sign on Mount Lee is located here. It is a 45-foot tall structure erected in 1923 as a temporary advertisement.

Los Angeles has one of the busiest ports in America and the busiest port in North America known as The Port of Los Angeles that generates a revenue of $750 million annually. Paramount Pictures is one of the few big production houses located in Los Angeles in Hollywood. Famous celebrities like Ice Cube, Jennifer Aniston, Gigi Hadid were born here. This city used to be the headquarters of aerospace and defence company Northrop Grumman till 2011. Still it is one of the largest employer in the Los Angeles County that employs 18,000 people.

San Diego – City of Year-Round Sunshine

The second major city in the list is San Diego. Known for 70-miles of pristine beaches the city has year-round sunshine and so laid back surface culture is quite popular here. San Diego is home to several defense institutions like Marine Corps Recruit Depot, Naval Information Warfare Systems Command and several naval bases of US Navy. Apart from US Navy, several Marine Corps and US Coast Guard stations are located here. This is the primary reason of defense becoming top sector in San Diego economy.

The Naval Base of San Diego is the largest employer here with a workforce of close to 34,000 cadets. Due to large presence of naval bases San Diego is often referred to as The Birthplace of Naval Aviation.

One of the world’s known telecom and semiconductors manufacturer Qualcomm is headquartered in San Diego. After defense and technology, tourism too plays a pivotal role in the city’s economy. San Diego is visited by close to 33 million tourists annually. The cruise ship industry here is one of the largest in USA which is used by most of the tourists.

*San Francisco skyline captured with The Golden Gate Bridge*

San Francisco – Home to The World’s Most Photographed Bridge

Known for The Golden Gate Bridge (The world’s most photographed bridge) San Francisco is the third major city in California. It is home to just over 800,000 residents. The Bay Area of San Francisco has a GDP of more than $1.3 trillion which is one of the highest in USA. San Francisco is home to several MNCs like Salesforce, Uber, Airbnb, Levi’s, OpenAI etc.

All big MNCs that are headquartered in San Francisco have their base in Financial District. This district has the highest number of corporate headquarters of various law firms, insurance companies and tech companies. Some big names includes Wells Fargo, Salesforce and GAP.

San Francisco welcomes more than 20 million national and international tourists every year. This pushes the San Francisco International Airport to be one of the busiest in the world. This airport acts as a hub for United Airlines and it is the world’s 32nd and California’s 2nd busiest airport after Los Angeles International Airport. In USA the San Francisco International Airport sits at 13th spot in traffic.

*PayPal headquarters 2211 N First St, San Jose, CA 95131, United States*

San Jose – Oldest Civilian Settlement in California

Founded way back in November, 1777 San Jose is officially recognised as the oldest civilian settlement in California. Founded by two Spanish explorers the city was established as a farming community to supply food to military outposts but now it leads the nation in tech.

Several big tech companies like PayPal, Cisco, Adobe, Zoom and eBay are headquartered in San Jose. The tech development in San Jose is such that the city is often referred to as The Capital of Silicon Valley. The city is known for expensive housing which ranked 5th most expensive in the world. One of the world’s largest overseas Vietnamese population can be found here in San Jose.

*Pacific SouthWest Building – The tallest building in Fresno*

Fresno – Home To Bank Of Italy Building

The last city in the list is Fresno which is also the fifth most populous city in California. It has one of the highest poverty rates in USA driven by a unemployment rate of 8%. The city is known for two major buildings – Pacific SouthWest Building and Bank of Italy Building.

Pacific SouthWest Building is the tallest building in Fresno which stands at 315-feet above the ground. It is a residential building having 16 stories and its construction was completed way back in 1925 making it older than 100 years. Many also refer to it as a Security Bank Building.

Bank of Italy Building is a 125-feet tall building constructed originally for the Bank of Italy which became Bank of America that left the building in 1973. In 1918 this building was completed and it still stands tall. The building is lying vacant since 1973. In 2025 Fresno authorities stalled the building’s renovation due to high cost.

So these were the 5 major cities in California. If you find this article interesting then please share. THANK YOU!