Cheapest States to Live in 2026: Oklahoma Leads at 85.5 Cost Index

Margaret Tillson, 64, sat at her kitchen table in Tulsa on a Tuesday morning in March 2026, comparing her $1,100 monthly rent to what her sister pays in Denver — $2,400 for a nearly identical apartment. She had made the move from Colorado two years earlier, and the math still surprised her every month.

Her experience is not an outlier. Where you live determines more of your financial picture than almost any other single decision — more than your investment allocation, more than your cable bill, more than the brand of groceries you buy.

How the Rankings Work: What a Cost of Living Index Actually Measures

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A cost of living index sets the national average at 100. Any state below 100 is cheaper than average. Any state above 100 costs more. Forbes ranks states by their overall cost of living index, factoring in housing, groceries, utilities, transportation, and healthcare.

The index is not abstract. A score of 85.5 means a household spending $4,000 per month at the national average would spend roughly $3,420 in that state instead. That is $580 per month — or $6,960 per year — back in your pocket.

(I ran this exact calculation when a colleague asked me whether moving from Chicago to Kansas City made financial sense. The index difference was 18 points. On a $3,500 monthly budget, that translated to $630 saved every single month. Numbers like that change decisions.)

The 2026 Rankings: Top 10 Cheapest States

Oklahoma ranks number one for overall affordability in 2026 with a cost of living index of 85.5, followed by Mississippi, Alabama, Missouri, and West Virginia. The South and Midwest dominate the top of the affordability list — a pattern that has held for over a decade.

Note: Index figures for ranks 2–10 are drawn from published 2026 affordability rankings. The national average index equals 100.

Oklahoma at 85.5: What That Index Score Means in Real Dollars

Oklahoma’s top ranking is not a fluke. The state has appeared in the top three of affordability indexes for more than ten consecutive years. What drives the 85.5 score is a combination of factors that compound across every spending category.

Housing is the biggest lever. The median home price in Oklahoma City in early 2026 sits around $199,000 — compared to a national median closer to $420,000. In Tulsa, like Margaret’s apartment, a two-bedroom unit averages roughly $950–$1,150 per month. The same unit in Denver runs $2,200–$2,600. That single line item — rent or mortgage — accounts for the majority of the index gap.

Groceries in Oklahoma run about 8–10% below the national average. A gallon of milk that costs $4.20 nationally averages closer to $3.80 in Tulsa or Oklahoma City. Utilities are moderate — average monthly energy bills hover around $130, which is near the national average but offset by lower property taxes, which rank among the lowest 15 in the country.

Why 7 of the 10 Cheapest States Are in the South or Midwest

The geographic clustering is not accidental. Southern and Midwestern states share structural economic characteristics that keep costs persistently low. Land is abundant and relatively cheap, which holds down both home prices and commercial real estate — and commercial real estate costs flow directly into the price of groceries, services, and dining out.

Labor costs in these regions have historically run below coastal averages, which reduces the price of services from haircuts to home repairs. States like Arkansas, Mississippi, and Alabama also have lower average property tax rates, though this varies significantly by county.

Tennessee deserves a specific mention at number 10. Nashville’s rapid growth over the past decade has pushed housing costs up significantly within the city — median rent in Nashville proper now exceeds $1,700 for a one-bedroom — but the state’s overall index stays low because rural and mid-size markets like Knoxville, Chattanooga, and Jackson still offer housing well below $1,200 per month. Tennessee also has no state income tax on wages, which adds effective purchasing power not fully captured by the index.

Missouri at 87.1 benefits from the same dynamic. Kansas City and St. Louis both offer urban amenities at prices that would be unrecognizable to residents of comparable cities on the coasts. A three-bedroom home in a solid Kansas City neighborhood can still be found for $230,000–$280,000 in 2026.

The 5 Most Expensive States in 2026 and What the Gap Costs You

Understanding the cheapest states is more useful when you see what you’re comparing against. Hawaii consistently tops the most-expensive list with a cost of living index around 193 — nearly double the national average. Massachusetts, California, New York, and Connecticut round out the top five most expensive states, all carrying indexes above 130.

The practical math is stark. A household living on $80,000 per year in Hawaii has roughly the same purchasing power as a household earning about $41,500 in Oklahoma. That is not a rounding error — that is the difference between financial stress and financial breathing room on the same nominal income.

Remote workers, retirees on fixed incomes, and anyone with location-independent income have the most to gain from this gap. A remote software developer earning $120,000 per year who moves from San Francisco (COL index approximately 178) to Tulsa (part of Oklahoma’s 85.5 index) effectively receives a purchasing power raise of more than $40,000 per year without changing their salary at all.

What the Index Doesn’t Capture: 3 Factors to Weigh Before Moving

The cost of living index is a powerful tool, but it is not the whole picture. Three factors consistently get underweighted by people who move purely for affordability.

1. Income levels in cheaper states are also lower. Oklahoma’s median household income is approximately $58,000 per year, compared to a national median around $80,000. If you are taking a local job rather than bringing remote income, the wage gap can offset much of the cost advantage. The index tells you what things cost — it does not tell you what you will earn.

2. Healthcare access varies significantly. Rural areas in Mississippi and West Virginia, while cheap, have faced hospital closures and physician shortages that can affect both quality of care and out-of-pocket costs for those without strong employer coverage. If you have ongoing medical needs, research specific counties, not just statewide averages.

3. Climate and disaster risk carry financial weight. Oklahoma sits in Tornado Alley. Homeowners insurance in parts of Oklahoma and Kansas has risen sharply in recent years — some ZIP codes have seen premiums increase 30–50% since 2022 — partially offsetting the housing cost advantage. Mississippi and coastal Alabama face hurricane risk that similarly inflates insurance costs in certain areas.

None of these factors eliminate the affordability case for these states. They do mean that the index is a starting point for research, not a final answer.

How to Use the 2026 Rankings to Make an Actual Decision

If you are seriously considering a move for affordability reasons, the most useful exercise is to build a side-by-side monthly budget using your actual spending categories — not a generic index. Take your current rent or mortgage, your grocery bill, your car insurance, your utilities, and your healthcare costs. Then research those same line items in your target city specifically, not just the state.

Tulsa and Oklahoma City will have different numbers. Rural Kansas will look different from Kansas City. The statewide index gives you a directional signal; city-level research gives you a real number to act on.

Margaret Tillson did exactly this before her move from Colorado. She spent three weeks building a spreadsheet comparing her actual Tulsa costs to her Denver costs. The result was a $1,340 per month difference in her favor — $16,080 per year. Two years later, she has used that savings to pay off her car, build a six-month emergency fund, and increase her retirement contributions for the first time in a decade.

The index pointed her in the right direction. The math closed the deal.

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