Overall
- Springfield
- 92.7
Diff -0.3 RPP
Louisville/Jefferson County vs Springfield
Cost of living comparison based on BEA Regional Price Parities. Springfield is 0.4% less expensive than Louisville/Jefferson County.
0.4% less expensive
Springfield, IL is 0.4% less expensive than Louisville/Jefferson County, KY-IN on BEA Regional Price Parities (overall RPP 92.7 vs 93.1). A $100,000 salary in Louisville/Jefferson County buys about the same as $99,647 in Springfield; the largest component gap is services.
- Overall RPP 93.1 (Louisville/Jefferson County) vs 92.7 (Springfield)
- $100k in Louisville/Jefferson County ≈ $99,647 purchasing power in Springfield
- Services drives the gap (+15.4 RPP points)
RPP parity plate
Pair KY:IL 93.1→92.7
PHOTO-FINISH · CROSS-STATE · SPLIT-BUDGET · BOTH-BELOW · PP-PAR
- PHOTO-FINISH Photo finish
- CROSS-STATE KY × IL
- SPLIT-BUDGET Split budget
- BOTH-BELOW Both below 100
- PP-PAR PP near-par
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.
Louisville/Jefferson County
93.1
Cost Index
Springfield
92.7
Cost Index
What This Comparison Actually Tells You
Louisville/Jefferson County, KY-IN and Springfield, IL are a photo finish on overall price level, only 0.3 RPP points apart. A salary conversion is therefore a fine adjustment, not evidence of a fundamentally different cost regime.
Services creates the largest separation: Springfield is 15.4 points higher. But services move against the overall direction, so this is a split budget rather than a clean across-the-board winner.
Comparable population context is incomplete for this pair, so no market-scale explanation is inferred from the price indexes.
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.
For a service-heavy household, test childcare, health, and other locally supplied costs before relying on rent alone. The BEA ratio converts $100,000 in Louisville/Jefferson County to $99,647 in Springfield, but it is not a personal spending weight.
Category Breakdown
Goods
- Springfield
- 93.6
Diff -2.6 RPP
Services
- Springfield
- 90.4
Diff +15.4 RPP
Rents
- Springfield
- 71.6
Diff -6.9 RPP
| Category | Louisville/Jefferson County | Springfield | Difference |
|---|---|---|---|
| Overall | 93.1 | 92.7 | -0.3 |
| Goods | 96.2 | 93.6 | -2.6 |
| Services | 75.0 | 90.4 | +15.4 |
| Rents | 78.6 | 71.6 | -6.9 |
Visual Comparison
Overall
Louisville/Jefferson County 93.1
Springfield 92.7
Goods
Louisville/Jefferson County 96.2
Springfield 93.6
Services
Louisville/Jefferson County 75.0
Springfield 90.4
Rents
Louisville/Jefferson County 78.6
Springfield 71.6
Vertical line = national average (100)
Salary Equivalents
What a salary in Louisville/Jefferson County would need to be in Springfield for the same purchasing power:
| In Louisville/Jefferson County | In Springfield | Difference |
|---|---|---|
| $50,000 | $49,823 | $-177 |
| $75,000 | $74,735 | $-265 |
| $100,000 | $99,647 | $-353 |
| $150,000 | $149,470 | $-530 |
$ in Louisville/Jefferson County = in Springfield
Same BEA Regional Price Parity ratio as the table above (93.1 → 92.7), computed live from your number, nothing is sent anywhere.
Frequently Asked Questions
Is Springfield more expensive than Louisville/Jefferson County?
Springfield is 0.4% less expensive than Louisville/Jefferson County. The overall cost index is 92.7 vs 93.1 (national average = 100).
What salary in Springfield equals $100K in Louisville/Jefferson County?
A $100,000 salary in Louisville/Jefferson County has the same purchasing power as $99,647 in Springfield. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Louisville/Jefferson County and Springfield?
Rents in Louisville/Jefferson County are indexed at 78.6 while Springfield is at 71.6 (national average = 100). Louisville/Jefferson County 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.