What a price index measures, why almost all of the difference between places is one category, and when a raise for moving is really a pay cut. General information, not personalized financial advice.
The figures behind the cost of living comparison are the Bureau of Economic Analysis's Regional Price Parities. They answer one question: what does the same basket of things cost here, compared with the national average? The average is set to 100 by construction, so 110.7 means about 10.7% dearer than the country as a whole, and 86.9 means about 13.1% cheaper.
Two consequences follow from that and are constantly missed. First, the index is a relative number and never tells you what you need to earn anywhere — there is no dollar figure hiding inside it. Second, it describes the price of an average national basket, not of your life. If your spending looks nothing like the average, neither does your cost of living.
BEA publishes the index split three ways: goods, rents, and other services. Fitting the overall index to those three across all fifty-one places recovers their weights almost exactly — roughly 29% goods, 17% rents, and 53% other services. Hold on to that 17%. It is the source of the most useful thing on this page.
Rents correlate with the overall index at 0.96 — close to a straight line. Goods manage 0.81 and services 0.84. When a state is expensive, it is expensive because of housing, and when it is cheap it is cheap because of housing. The rest barely moves.
The top and bottom of the table make the pattern obvious. California sits at 110.7 overall with rents at 154.3 and goods at 106.1. Arkansas sits at 86.9 overall with rents at 58.2 and goods at 93.6. Between those two states, rents differ by a factor of 2.7; groceries and clothes differ by about 13%.
| State | Overall | Goods | Rents | Services |
|---|---|---|---|---|
| District of Columbia | 109.9 | 106.5 | 155.0 | 103.0 |
| California | 110.7 | 106.1 | 154.3 | 102.6 |
| New York | 107.9 | 107.3 | 122.2 | 104.1 |
| Mississippi | 87.0 | 96.2 | 56.5 | 96.1 |
| Arkansas | 86.9 | 93.6 | 58.2 | 95.3 |
| West Virginia | 89.5 | 96.5 | 54.2 | 99.9 |
This is also why the same comparison can look wildly different depending on whether you rent or own outright. Someone whose housing cost is fixed by a paid-off mortgage is genuinely facing the 1.19× goods spread and almost nothing else. Someone signing a new lease is facing the 2.86× one.
The index weights rent at about 17% of the basket, because that is roughly what housing is across all US households — a figure pulled down by everyone who owns their home outright or is locked into an old mortgage.
Rent is not 17% of a renter's budget. The conventional affordability ceiling is 30%, and a large share of renters are above it. If housing is 35% of what you spend rather than 17%, you are exposed to roughly twice as much of the rent gap as the index prices in. The headline difference between two places understates your move, and the understatement is largest exactly where the rent gap is biggest.
Worked through: the overall index says Texas at 97.1 and California at 110.7, a 14% difference — the raise you would need just to stand still. But the rent components are 96.5 and 154.3 — a 60% gap, not a 14% one. A renter spending a third of their money on housing feels much more of that second gap and much less of the first, and 14% will not cover it.
The practical version is dull but it works: price the actual apartment, then use the index only for everything else. Nobody moves into an average.
An index compares prices. A budget adds up what a specific household actually has to buy, which is a more useful thing to know and a harder thing to build. The Economic Policy Institute publishes one for all 3,143 US counties: the annual income a family needs for a modest but adequate standard of living, priced locally.
The spread there is far wider than any price index suggests. A single adult needs $36,221 a year in Danville city, Virginia and $105,985 in Santa Cruz County, California — a factor of 2.93 where the state price index spans only 1.27. Two adults with two children run from $75,884 to $245,257, a factor of 3.23, against a national average of $101,771.
And again it is housing doing it. Across counties the total budget varies 3.2× while its housing line varies 7.8×, from $6,481 to $50,676. Every other category is comparatively flat. Housing is not merely the largest difference between places; it is very nearly the only one.
One finding here is genuinely surprising, and it is worth stating carefully. In the EPI budgets, the transportation line exceeds the housing line in 87% of counties for a single adult — a median of 30.5% of the budget against 19.8%. That is not a claim that Americans spend more on cars than on homes; it is a claim about this particular standard, which prices housing as a modest local rental and assumes car ownership nearly everywhere because in most counties there is no alternative. Where you live sets your rent, and it also quietly decides whether you need a car at all.
It cannot. It is a ratio against a national average of 100, with no dollars in it anywhere. For a dollar figure you want a budget, like EPI's county numbers — and those come out far more spread out than any index.
Sometimes, but it is a separate question from prices and the two move independently. Tax is one line on a comparison, not the comparison; the paycheck calculator prices the tax side and the index prices the rest.
Housing is dramatically cheaper. Between the cheapest and dearest states, goods differ by about 19% and other services by about 14% — while rents differ by 186%. A cheap state is a cheap place to sleep and a very slightly cheap place to do everything else.
Only if your spending matches the national basket. If you rent, your exposure to the gap is roughly double what the index weights, and the raise has to clear the rent difference specifically rather than the average one.
Index figures are BEA Regional Price Parities for 2024 across the fifty states and DC. Budget figures are EPI's 2026 edition in 2025 dollars, covering all 3,143 counties. The spreads, the correlation and the implied weights were computed from those two files directly.
Nothing is saved or sent anywhere; this just checks your answers in the page itself.
Price parities are state-level and hide large variation inside a state; a rural county and its state capital can differ more than two states do. The implied weights are recovered by fitting published components rather than taken from BEA's own methodology, so treat 17% as a close estimate rather than an official figure. EPI's budgets price one specific standard of living for one household composition and are not a poverty line, a wage recommendation or a prediction about any particular family. This page is general information, not financial advice.