Overall
Diff +17.5 RPP
St. Louis vs Napa
Cost of living comparison based on BEA Regional Price Parities. Napa is 18.4% more expensive than St. Louis.
18.4% more expensive
Napa, CA is 18.4% more expensive than St. Louis, MO-IL on BEA Regional Price Parities (overall RPP 112.6 vs 95.1). A $100,000 salary in St. Louis buys about the same as $118,368 in Napa; the largest component gap is rents.
- Overall RPP 95.1 (St. Louis) vs 112.6 (Napa)
- $100k in St. Louis ≈ $118,368 purchasing power in Napa
- Rents drives the gap (+118.4 RPP points)
RPP parity plate
Pair MO:CA 95.1→112.6
TIER-GAP · CROSS-STATE · RENT-LED · BENCH-CROSS · PP-STEEP
- TIER-GAP Clear tier gap
- CROSS-STATE MO × CA
- RENT-LED Rent-led gap
- BENCH-CROSS Benchmark cross
- PP-STEEP Steep PP convert
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.
Salary Equivalents
What a salary in St. Louis would need to be in Napa for the same purchasing power:
| In St. Louis | In Napa | Difference |
|---|---|---|
| $50,000 | $59,184 | +$9,184 |
| $75,000 | $88,776 | +$13,776 |
| $100,000 | $118,368 | +$18,368 |
| $150,000 | $177,552 | +$27,552 |
$ in St. Louis = in Napa
Same BEA Regional Price Parity ratio as the table above (95.1 → 112.6), computed live from your number, nothing is sent anywhere.
What This Comparison Actually Tells You
St. Louis, MO-IL and Napa, CA sit in clearly different price tiers, separated by 17.5 RPP points. At this distance, treating the same nominal salary as equivalent would materially change purchasing power.
This route crosses the national benchmark: Napa is above 100 while St. Louis is below it. That makes the move a change of price regime, not merely a rank swap.
Rents leads the difference, with Napa 118.4 points higher than St. Louis. 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 St. Louis corresponds to $118,368 in Napa.
Category Breakdown
Goods
Diff +5.2 RPP
Services
Diff +86.6 RPP
Rents
Diff +118.4 RPP
| Category | St. Louis | Napa | Difference |
|---|---|---|---|
| Overall | 95.1 | 112.6 | +17.5 |
| Goods | 100.0 | 105.2 | +5.2 |
| Services | 69.9 | 156.5 | +86.6 |
| Rents | 79.0 | 197.4 | +118.4 |
Visual Comparison
Overall
St. Louis 95.1
Napa 112.6
Goods
St. Louis 100.0
Napa 105.2
Services
St. Louis 69.9
Napa 156.5
Rents
St. Louis 79.0
Napa 197.4
Vertical line = national average (100)
St. Louis
95.1
Cost Index
Napa
112.6
Cost Index
Frequently Asked Questions
Is Napa more expensive than St. Louis?
Napa is 18.4% more expensive than St. Louis. The overall cost index is 112.6 vs 95.1 (national average = 100).
What salary in Napa equals $100K in St. Louis?
A $100,000 salary in St. Louis has the same purchasing power as $118,368 in Napa. This is based on the BEA Regional Price Parity indexes.
How do rents compare between St. Louis and Napa?
Rents in St. Louis are indexed at 79.0 while Napa is at 197.4 (national average = 100). Napa has higher rents.
Data sources
- BEA Regional Price Parities (RPP), the cost-of-living indices shown on this page
- U.S. Census Bureau, American Community Survey (ACS), gross-rent observations behind the rents component
- BLS Consumer Price Index (CPI), goods and services price relatives
- BLS Occupational Employment and Wage Statistics (OEWS), labor-driven services component
- HUD Fair Market Rents (FMR), 40th-percentile rent cross-reference
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.