Overall
Diff +11.7 RPP
Cost of living comparison based on BEA Regional Price Parities. Napa is 11.6% more expensive than Ann Arbor.
Napa, CA is 11.6% more expensive than Ann Arbor, MI on BEA Regional Price Parities (overall RPP 112.6 vs 100.9). A $100,000 salary in Ann Arbor buys about the same as $111,572 in Napa; the largest component gap is rents.
RPP parity plate
Pair MI:CA 100.9→112.6
TIER-GAP · CROSS-STATE · RENT-LED · BOTH-ABOVE · PP-SHIFT
Instrument codes from this pair's BEA Regional Price Parities (overall · goods · services · rents · national benchmark 100 · purchasing-power conversion), not a ranking or recommendation.
What a salary in Ann Arbor would need to be in Napa for the same purchasing power:
| In Ann Arbor | In Napa | Difference |
|---|---|---|
| $50,000 | $55,786 | +$5,786 |
| $75,000 | $83,679 | +$8,679 |
| $100,000 | $111,572 | +$11,572 |
| $150,000 | $167,358 | +$17,358 |
Same BEA Regional Price Parity ratio as the table above (100.9 → 112.6), computed live from your number, nothing is sent anywhere.
Both metros exceed the U.S. benchmark of 100. The choice is between two national premiums, so local wages need to clear the higher baseline in either market.
Ann Arbor, MI and Napa, CA sit in clearly different price tiers, separated by 11.7 RPP points. At this distance, treating the same nominal salary as equivalent would materially change purchasing power.
Rents leads the difference, with Napa 72.1 points higher than Ann Arbor. Goods, services, and rents all point in the same broad direction, making the headline comparison more transferable across household types.
Comparable population context is incomplete for this pair, so no market-scale explanation is inferred from the price indexes.
For a housing-sensitive move, validate the rent gap first: HUD Fair Market Rent and the actual unit size can overturn what the blended index implies. On the BEA ratio alone, $100,000 in Ann Arbor corresponds to $111,572 in Napa.
Diff +11.7 RPP
Diff +11.5 RPP
Diff +58.4 RPP
Diff +72.1 RPP
| Category | Ann Arbor | Napa | Difference |
|---|---|---|---|
| Overall | 100.9 | 112.6 | +11.7 |
| Goods | 93.7 | 105.2 | +11.5 |
| Services | 98.2 | 156.5 | +58.4 |
| Rents | 125.3 | 197.4 | +72.1 |
Vertical line = national average (100)
Ann Arbor and Napa share 17 published annual releases from 2008 through 2024. Their overall gap held broadly steady, moving from 11.6 to 11.7 RPP points. Napa remained the higher-index metro in the latest release.
Rents changed the most within this pair: its gap moved 59.8 points between the first and latest shared releases (12.4 to 72.1 points). This describes a relative price-index history, not a forecast or a household budget.
| Release Year | Ann Arbor RPP | Napa RPP | Relative Gap |
|---|---|---|---|
| 2008 | 103.6 | 115.2 | 11.6 points Napa higher |
| 2012 | 100.9 | 111.6 | 10.8 points Napa higher |
| 2016 | 98.4 | 117.8 | 19.4 points Napa higher |
| 2020 | 98.6 | 112.2 | 13.7 points Napa higher |
| 2024 | 100.9 | 112.6 | 11.7 points Napa higher |
Annual BEA Regional Price Parity releases; a higher index means a higher price level relative to the national average of 100. Selected years shown from the full shared series.
Napa is 11.6% more expensive than Ann Arbor. The overall cost index is 112.6 vs 100.9 (national average = 100).
A $100,000 salary in Ann Arbor has the same purchasing power as $111,572 in Napa. This is based on the BEA Regional Price Parity indexes.
Rents in Ann Arbor are indexed at 125.3 while Napa is at 197.4 (national average = 100). Napa has higher rents.
Every figure on PlainCost is rendered directly from BEA Regional Price Parity source data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, our changelog, or report a data error. Data current as of 2026-08-11. Rankings measure the published cost-of-living index only; we don't recommend where to live or rate any metro's quality of life.