How Cost of Living Indices Work
A cost of living index compares the relative expense of everyday goods and services between locations using a baseline of 100, which represents the national average. A city with an index of 150 is 50% more expensive than the national average. One at 85 is 15% cheaper. The index factors in housing, groceries, transportation, healthcare, utilities, and miscellaneous goods.
The most widely cited source is the Council for Community and Economic Research (C2ER), which collects quarterly pricing data from nearly 300 urban areas. The Bureau of Economic Analysis publishes Regional Price Parities (RPPs) that serve the same purpose at the state and metro level. Both use weighted baskets of consumer goods—housing typically carries the heaviest weight at around 30–35% of the total index.
When you divide the target city's index by your current city's index, you get an adjustment factor. Multiply your current salary by that factor and you have the equivalent income needed to maintain the same standard of living. It's that straightforward.
Most and Least Expensive US Cities in 2026
Manhattan remains the most expensive place to live in the US with a composite index above 230. San Francisco, Honolulu, and the greater New York metro area follow close behind, all above 170. On the affordable end, cities like McAllen, TX, Knoxville, TN, and Tulsa, OK consistently score below 90.
| City | Approx. Index | vs. National Avg. |
|---|---|---|
| New York City (Manhattan) | ~235 | +135% more expensive |
| San Francisco, CA | ~179 | +79% more expensive |
| Seattle, WA | ~152 | +52% more expensive |
| Denver, CO | ~108 | +8% more expensive |
| Austin, TX | ~95 | 5% cheaper |
| Houston, TX | ~90 | 10% cheaper |
| Tulsa, OK | ~82 | 18% cheaper |
Source: C2ER Cost of Living Index, 2025 Q4 estimates. Housing drives most of the variation—a one-bedroom in Manhattan averages $3,500/month versus $750 in Tulsa.
What Expenses Change Most Between Cities
Housing is the single largest variable. Rent and home prices can swing 300% or more between markets. A two-bedroom apartment that costs $1,200/month in Dallas might run $3,800 in San Francisco. This one category accounts for the majority of cost of living differences.
Transportation is the second biggest mover. In cities with strong public transit (New York, Chicago, DC), you can ditch a car entirely and save $8,000–$12,000 per year. In sprawling metros like Atlanta or Phoenix, car ownership is practically mandatory, adding insurance, gas, and maintenance to your budget.
Food and groceries vary less dramatically—typically 10–25% between the cheapest and most expensive metros. Healthcare costs fluctuate based on state regulations and provider density, but employer-sponsored insurance buffers much of the difference for salaried workers.
Salary Negotiation Tips for Relocation
- Lead with data, not feelings. Show your employer the exact COL adjustment factor. "My equivalent salary in San Francisco is $118K based on C2ER data" is more compelling than "rent is expensive there."
- Negotiate beyond base salary. If the company won't match the full COL adjustment, push for relocation stipends, signing bonuses, housing allowances, or accelerated review timelines. These cost the company less than permanent salary increases.
- Factor in taxes. State income tax varies from 0% (Texas, Florida, Nevada) to over 13% (California). A $100K salary in Austin keeps more take-home than $100K in Los Angeles. Use a take-home pay calculator to compare net income, not just gross.
- Don't forget remote work leverage. If you can work remotely from a lower-cost city, you effectively give yourself a raise without any negotiation. A San Francisco salary paid while living in Denver is a 40% purchasing power boost.
- Set a floor, not a ceiling. Calculate the minimum salary you need to maintain your current standard of living in the new city. That's your walk-away number. Anything above it is a genuine improvement.
To check how much rent you can comfortably afford in your new city, use our affordability calculator. If you're splitting expenses with roommates after the move, the rent split calculator helps divide costs fairly based on room size and features.