| Index | Diamond Bar | California | National |
| Cost of living | 182 | 141 | 100 |
| Groceries | 111 | 111 | 100 |
| Health care | 116 | 116 | 100 |
| Housing | 336 | 197 | 100 |
| Transportation | 117 | 118 | 100 |
| Utilities | 120 | 119 | 100 |
| Lifestyle & Entertainment | 119 | 120 | 100 |
| Household Items | 111 | 111 | 100 |
| Education & Childcare | 121 | 127 | 100 |
Knowing the cost of living in Diamond Bar allows individuals to create a realistic budget. This helps them understand how their income will cover expenses and whether they need to make financial adjustments. The cost of living in any region can fluctuate due to various factors. To assess the cost of living consistently across different areas, a national average of 100 serves as the basis for the cost of living index. The cost of living in Diamond Bar stands at 182, marking it 82% higher than the national average.
If you prioritize affordability when seeking a new place to live, Diamond Bar may not be your ideal choice, as it ranks among the most expensive locations in the entire United States. A very small amount of areas exhibit a cost of living at least 20% higher than the national average, and unfortunately, Diamond Bar falls into this category, which may not align with your preferences for a budget-friendly living environment.
When it comes to the cost of living in Diamond Bar, housing costs are a real heavyweight, often hogging a significant chunk of your earnings. Sadly, in this area, housing expenses for both buying and renting were 235.7% more expensive compared to your average city. That means you'll be shelling out more for homes, rents, mortgage rates and insurance.
Household expenses make up 8% of the total cost of living index score and cover the everyday essentials needed to keep your home running smoothly. These items may include cleaning supplies, laundry detergent, toiletries, clothing basics, and kitchen essentials. In Diamond Bar, you can expect to pay 10.8% more than average for these everyday necessities, making it a more expensive place to live.
The surge in grocery costs is indeed alarming, especially when groceries make up a large portion of your monthly expenditures. Over the past two years, there has been an inflation of over 10% in grocery prices. Unfortunately, Diamond Bar does not fare better, with grocery expenses coming in at 11.3% higher than the national average.
Is Diamond Bar an affordable place to live? That's a valid question to ask when you're thinking about moving to a new city. After all, how much it costs to live somewhere can be a huge factor in your decision. Affordability can be broken down into 3 common categories. The cost of living index (we talked about it earlier), housing expenses and income levels all play a big role in figuring out if a place is affordable. For instance, in Diamond Bar, the median home price is 286.5% higher than what most folks pay across the country, and monthly rent prices are 117% higher than the usual rates. Income levels in Diamond Bar come in at $152,498, which is 87.5% higher than the national average.
Transportation: In areas where public transportation is scarce or unavailable, residents often find themselves compelled to own and upkeep vehicles, thereby increasing the overall cost of living. Monthly expenses encompass fuel, insurance, routine maintenance and potentially lease or financing payments. In Diamond Bar, the transportation index is 16.5% higher than the national average.
Healthcare: Healthcare costs and insurance premiums can fluctuate greatly based on the city or state. Access to healthcare facilities, out-of-pocket expenses for doctor\’s visits, dentist costs, medication costs and specialized care costs can all impact the cost of living. In Diamond Bar, the healthcare costs are 16% higher than the national average.
Taxes: Locations with elevated tax rates, encompassing both sales and income taxes, can be a factor in driving up the cost of living. When you're paying more in taxes for everyday household expenses, it naturally translates into higher expenses. Similarly, a higher income tax rate can also contribute to an overall higher cost of living. In Diamond Bar, the standard sales tax rate starts at 7.25%, and the income tax rates commence at 1%.
The cost of living data for Diamond Bar shown above is based on a U.S. average baseline score of 100, making it easier to compare how far your dollar may go from one city to another. Housing uses U.S. Census home price and rental data, while all remaining values are AI-assisted estimates informed by regional pricing, climate, transportation dynamics, and local economic factors. These scores are best used for directional comparisons between cities.
| Cost of living index | |
| Groceries index | |
| Health care index | |
| Housing index | |
| Transportation index | |
| Utilities index | |
| Lifestyle index | |
| Household index | |
| Educare index |
| Median Income | Per Year | Per Month | Max Budget (28% DTI) | Max Budget (36% DTI) |
| Owners | $164,195 | $13,683 | $3,831 | $4,926 |
| Renters | $100,420 | $8,368 | $2,343 | $3,013 |
| State | General Sales Tax | With Max Surtax |
| California | 7.25% | 10.5% |
| State | Income Tax (Low) | Income Tax (High) |
| California | 1% | 13.3% |
| City | Population | Cost of Living Index | National Avg. |
| Industry, CA | 269 | 137 | 37.1% |
| Montclair, CA | 41,014 | 139 | 38.5% |
| South San Jose Hills, CA | 19,654 | 142 | 42.0% |
| Ontario, CA | 185,250 | 143 | 43.4% |
| Pomona, CA | 156,853 | 145 | 45.3% |
| Diamond Bar, CA | 57,925 | 182 | 81.8% |
| City | Population | Cost of Living Index | National Avg. |
| Valdosta, GA | 57,835 | 92 | 8.0% |
| Pocatello, ID | 57,833 | 95 | 5.3% |
| Smyrna, GA | 58,048 | 118 | 17.6% |
| Tamiami, FL | 57,787 | 127 | 26.7% |
| Dearborn Heights, MI | 57,763 | 92 | 8.0% |
| Diamond Bar, CA | 57,925 | 182 | 81.8% |
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