Overall
Diff -17.5 RPP
Napa vs St. Louis
Cost of living comparison based on BEA Regional Price Parities. St. Louis is 15.5% less expensive than Napa.
15.5% less expensive
St. Louis, MO-IL is 15.5% less expensive than Napa, CA on BEA Regional Price Parities (overall RPP 95.1 vs 112.6). A $100,000 salary in Napa buys about the same as $84,482 in St. Louis; the largest component gap is rents.
- Overall RPP 112.6 (Napa) vs 95.1 (St. Louis)
- $100k in Napa ≈ $84,482 purchasing power in St. Louis
- Rents drives the gap (-118.4 RPP points)
RPP parity plate
Pair CA:MO 112.6→95.1
TIER-GAP · CROSS-STATE · RENT-LED · BENCH-CROSS · PP-STEEP
- TIER-GAP Clear tier gap
- CROSS-STATE CA × MO
- 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 Napa would need to be in St. Louis for the same purchasing power:
| In Napa | In St. Louis | Difference |
|---|---|---|
| $50,000 | $42,241 | $-7,759 |
| $75,000 | $63,362 | $-11,638 |
| $100,000 | $84,482 | $-15,518 |
| $150,000 | $126,723 | $-23,277 |
$ in Napa = in St. Louis
Same BEA Regional Price Parity ratio as the table above (112.6 → 95.1), computed live from your number, nothing is sent anywhere.
What This Comparison Actually Tells You
Napa, CA and St. Louis, MO-IL 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 St. Louis 118.4 points lower than Napa. 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 Napa corresponds to $84,482 in St. Louis.
Category Breakdown
Goods
Diff -5.2 RPP
Services
Diff -86.6 RPP
Rents
Diff -118.4 RPP
| Category | Napa | St. Louis | Difference |
|---|---|---|---|
| Overall | 112.6 | 95.1 | -17.5 |
| Goods | 105.2 | 100.0 | -5.2 |
| Services | 156.5 | 69.9 | -86.6 |
| Rents | 197.4 | 79.0 | -118.4 |
Visual Comparison
Overall
Napa 112.6
St. Louis 95.1
Goods
Napa 105.2
St. Louis 100.0
Services
Napa 156.5
St. Louis 69.9
Rents
Napa 197.4
St. Louis 79.0
Vertical line = national average (100)
Napa
112.6
Cost Index
St. Louis
95.1
Cost Index
Frequently Asked Questions
Is St. Louis more expensive than Napa?
St. Louis is 15.5% less expensive than Napa. The overall cost index is 95.1 vs 112.6 (national average = 100).
What salary in St. Louis equals $100K in Napa?
A $100,000 salary in Napa has the same purchasing power as $84,482 in St. Louis. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Napa and St. Louis?
Rents in Napa are indexed at 197.4 while St. Louis is at 79.0 (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.