Overall
- Springfield
- 92.7
Diff -0.0 RPP
Cost of living comparison based on BEA Regional Price Parities. Slidell-Mandeville-Covington is 0% less expensive than Springfield.
Slidell-Mandeville-Covington, LA is 0% less expensive than Springfield, IL on BEA Regional Price Parities (overall RPP 92.7 vs 92.7). A $100,000 salary in Springfield buys about the same as $99,980 in Slidell-Mandeville-Covington; the largest component gap is services.
RPP parity plate
Pair IL:LA 92.7→92.7
PHOTO-FINISH · CROSS-STATE · SPLIT-BUDGET · BOTH-BELOW · PP-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.
Springfield, IL and Slidell-Mandeville-Covington, LA are a photo finish on overall price level, only 0.0 RPP points apart. A salary conversion is therefore a fine adjustment, not evidence of a fundamentally different cost regime.
Services creates the largest separation: Slidell-Mandeville-Covington is 18.8 points lower. But rents and goods 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 Springfield to $99,980 in Slidell-Mandeville-Covington, but it is not a personal spending weight.
Diff -0.0 RPP
Diff +0.0 RPP
Diff -18.8 RPP
Diff +13.8 RPP
| Category | Springfield | Slidell-Mandeville-Covington | Difference |
|---|---|---|---|
| Overall | 92.7 | 92.7 | -0.0 |
| Goods | 93.6 | 93.7 | +0.0 |
| Services | 90.4 | 71.7 | -18.8 |
| Rents | 71.6 | 85.4 | +13.8 |
Vertical line = national average (100)
What a salary in Springfield would need to be in Slidell-Mandeville-Covington for the same purchasing power:
| In Springfield | In Slidell-Mandeville-Covington | Difference |
|---|---|---|
| $50,000 | $49,990 | $-10 |
| $75,000 | $74,985 | $-15 |
| $100,000 | $99,980 | $-20 |
| $150,000 | $149,969 | $-31 |
Same BEA Regional Price Parity ratio as the table above (92.7 → 92.7), computed live from your number, nothing is sent anywhere.
Slidell-Mandeville-Covington is 0% less expensive than Springfield. The overall cost index is 92.7 vs 92.7 (national average = 100).
A $100,000 salary in Springfield has the same purchasing power as $99,980 in Slidell-Mandeville-Covington. This is based on the BEA Regional Price Parity indexes.
Rents in Springfield are indexed at 71.6 while Slidell-Mandeville-Covington is at 85.4 (national average = 100). Slidell-Mandeville-Covington 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.