Overall
- Walla Walla
- 98.5
- Sierra Vista-Douglas
- 89.2
Diff -9.3 RPP
Walla Walla vs Sierra Vista-Douglas
Cost of living comparison based on BEA Regional Price Parities. Sierra Vista-Douglas is 9.4% less expensive than Walla Walla.
9.4% less expensive
Sierra Vista-Douglas, AZ is 9.4% less expensive than Walla Walla, WA on BEA Regional Price Parities (overall RPP 89.2 vs 98.5). A $100,000 salary in Walla Walla buys about the same as $90,585 in Sierra Vista-Douglas; the largest component gap is rents.
- Overall RPP 98.5 (Walla Walla) vs 89.2 (Sierra Vista-Douglas)
- $100k in Walla Walla ≈ $90,585 purchasing power in Sierra Vista-Douglas
- Rents drives the gap (-24.7 RPP points)
RPP parity plate
Pair WA:AZ 98.5→89.2
TIER-GAP · CROSS-STATE · RENT-LED · BOTH-BELOW · PP-SHIFT
- TIER-GAP Clear tier gap
- CROSS-STATE WA × AZ
- RENT-LED Rent-led gap
- BOTH-BELOW Both below 100
- PP-SHIFT 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.
Salary Equivalents
What a salary in Walla Walla would need to be in Sierra Vista-Douglas for the same purchasing power:
| In Walla Walla | In Sierra Vista-Douglas | Difference |
|---|---|---|
| $50,000 | $45,292 | $-4,708 |
| $75,000 | $67,938 | $-7,062 |
| $100,000 | $90,585 | $-9,415 |
| $150,000 | $135,877 | $-14,123 |
$ in Walla Walla = in Sierra Vista-Douglas
Same BEA Regional Price Parity ratio as the table above (98.5 → 89.2), computed live from your number, nothing is sent anywhere.
What This Comparison Actually Tells You
Both metros remain below the U.S. benchmark of 100. This comparison chooses between two below-average price levels; “more expensive” here does not mean nationally expensive.
Walla Walla, WA and Sierra Vista-Douglas, AZ sit in clearly different price tiers, separated by 9.3 RPP points. At this distance, treating the same nominal salary as equivalent would materially change purchasing power.
Rents leads the difference, with Sierra Vista-Douglas 24.7 points lower than Walla Walla. 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 Walla Walla corresponds to $90,585 in Sierra Vista-Douglas.
Category Breakdown
Goods
- Walla Walla
- 105.0
- Sierra Vista-Douglas
- 96.2
Diff -8.8 RPP
Services
- Walla Walla
- 94.3
- Sierra Vista-Douglas
- 91.9
Diff -2.4 RPP
Rents
- Walla Walla
- 86.6
- Sierra Vista-Douglas
- 61.9
Diff -24.7 RPP
| Category | Walla Walla | Sierra Vista-Douglas | Difference |
|---|---|---|---|
| Overall | 98.5 | 89.2 | -9.3 |
| Goods | 105.0 | 96.2 | -8.8 |
| Services | 94.3 | 91.9 | -2.4 |
| Rents | 86.6 | 61.9 | -24.7 |
Visual Comparison
Overall
Walla Walla 98.5
Sierra Vista-Douglas 89.2
Goods
Walla Walla 105.0
Sierra Vista-Douglas 96.2
Services
Walla Walla 94.3
Sierra Vista-Douglas 91.9
Rents
Walla Walla 86.6
Sierra Vista-Douglas 61.9
Vertical line = national average (100)
Walla Walla
98.5
Cost Index
Sierra Vista-Douglas
89.2
Cost Index
Frequently Asked Questions
Is Sierra Vista-Douglas more expensive than Walla Walla?
Sierra Vista-Douglas is 9.4% less expensive than Walla Walla. The overall cost index is 89.2 vs 98.5 (national average = 100).
What salary in Sierra Vista-Douglas equals $100K in Walla Walla?
A $100,000 salary in Walla Walla has the same purchasing power as $90,585 in Sierra Vista-Douglas. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Walla Walla and Sierra Vista-Douglas?
Rents in Walla Walla are indexed at 86.6 while Sierra Vista-Douglas is at 61.9 (national average = 100). Walla Walla 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.