California is not the most expensive state to live in, though it consistently ranks among the top three. Hawaii holds the number one spot with a cost-of-living index of 179.7, and Massachusetts comes in second at 150.8. California’s index sits at 136.7, meaning everyday costs run about 37% above the national average. That’s undeniably expensive, but the gap between California and Hawaii is significant.
How Cost-of-Living Rankings Work
The cost-of-living index uses 100 as the national baseline. A state scoring 136.7, like California, means that a basket of typical expenses (housing, groceries, transportation, healthcare, utilities) costs roughly 36.7% more than the national average. Hawaii’s 179.7 means residents there pay nearly 80% more than the average American for the same goods and services.
These composite scores blend several spending categories together, which can mask where a state is truly punishing. California’s housing costs, for instance, are far more extreme than its grocery or healthcare costs. A state can rank third overall yet lead the nation in one or two specific categories.
Where California Actually Leads: Housing
Housing is the single biggest reason California feels so expensive, and it’s the category where the state rivals or exceeds every other state. The California Association of Realtors forecasts a 2026 median home price of $905,000, up from $873,900 in 2025 and $865,400 in 2024. The national median hovers around $400,000, so a typical California home costs more than double what the average American pays.
Rent follows the same pattern. Major metro areas like the San Francisco Bay Area, Los Angeles, and San Diego consistently rank among the most expensive rental markets in the country. Even inland areas that were once considered affordable alternatives have seen sharp rent increases over the past decade. For many residents, housing alone consumes 40% or more of their take-home pay.
Taxes Add Another Layer
California has the highest top marginal state income tax rate in the country at 13.3%, which applies to taxable income above $1 million. The rate starts at 1% on the first dollars of taxable income and climbs through nine brackets. For comparison, most states with an income tax top out between 4% and 7%, and several states have no income tax at all.
The state sales tax base rate is also among the highest nationally, and local jurisdictions add their own surcharges on top of it. Combined with high property tax assessments driven by elevated home values (even though the property tax rate itself is capped), the overall tax burden in California is heavier than in most states. High earners feel the income tax most acutely, but sales taxes and vehicle registration fees affect everyone.
Energy Costs Run Well Above Average
Californians pay 33.22 cents per kilowatt-hour for residential electricity as of early 2026. The national average is closer to 17 cents, meaning California residents pay roughly double. Over a year, that difference can add $1,500 or more to a household’s utility bills depending on home size and climate zone.
Gasoline prices in California also consistently rank among the highest in the nation, driven by state fuel taxes, environmental regulations, and a requirement for a specially formulated blend of gasoline. Drivers routinely pay $1 to $1.50 more per gallon than the national average.
Higher Incomes Offset Some of the Cost
California’s real median household income was $100,600 in 2024, measured in inflation-adjusted dollars. The national median sits closer to $80,000. That roughly 25% income premium helps absorb higher costs, but it doesn’t fully close the gap when housing runs more than double and electricity costs twice as much.
The income advantage also varies dramatically by region and occupation. Tech workers in Silicon Valley or entertainment professionals in Los Angeles may earn well above the state median, while service workers, teachers, and retail employees often earn wages that barely keep pace with local costs. The result is that California’s affordability depends heavily on what you do for a living and where in the state you live. A household earning $100,000 in the Central Valley has a very different experience than one earning the same in San Francisco.
Why California Feels Like the Most Expensive
Even though Hawaii technically costs more, California dominates the conversation about expensive states for a few reasons. Its population of nearly 40 million means far more people experience those high costs firsthand. Hawaii’s population is under 1.5 million. California also has enormous variation within its borders: coastal cities are among the priciest places in the world, while some inland and rural areas are much closer to the national average.
The visibility of California’s housing market also shapes perception. Stories about $1 million starter homes in the Bay Area or $3,500 one-bedroom apartments in Los Angeles circulate widely. These are real prices in real neighborhoods, but they represent the most expensive pockets of an already expensive state. Someone living in Fresno or Bakersfield faces a meaningfully different cost structure than someone in Santa Monica.
California ranks third overall in cost of living, but it leads or nearly leads in housing, taxes, energy, and gasoline. For most people weighing a move or evaluating their financial situation, those individual categories matter more than the composite ranking. Whether California “feels” like the most expensive state depends largely on where you’d live, what you’d earn, and how much of your budget goes to a roof over your head.