Overall
Diff -0.3 RPP
Cost of living comparison based on BEA Regional Price Parities. Slidell-Mandeville-Covington is 0.4% less expensive than Louisville/Jefferson County.
Slidell-Mandeville-Covington, LA 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 $99,626 in Slidell-Mandeville-Covington; the largest component gap is rents.
RPP parity plate
Pair KY:LA 93.1→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.
Louisville/Jefferson County, KY-IN and Slidell-Mandeville-Covington, LA 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.
Rents creates the largest separation: Slidell-Mandeville-Covington is 6.9 points higher. But rents 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 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 Louisville/Jefferson County corresponds to $99,626 in Slidell-Mandeville-Covington.
Diff -0.3 RPP
Diff -2.5 RPP
Diff -3.3 RPP
Diff +6.9 RPP
| Category | Louisville/Jefferson County | Slidell-Mandeville-Covington | Difference |
|---|---|---|---|
| Overall | 93.1 | 92.7 | -0.3 |
| Goods | 96.2 | 93.7 | -2.5 |
| Services | 75.0 | 71.7 | -3.3 |
| Rents | 78.6 | 85.4 | +6.9 |
Vertical line = national average (100)
What a salary in Louisville/Jefferson County would need to be in Slidell-Mandeville-Covington for the same purchasing power:
| In Louisville/Jefferson County | In Slidell-Mandeville-Covington | Difference |
|---|---|---|
| $50,000 | $49,813 | $-187 |
| $75,000 | $74,720 | $-280 |
| $100,000 | $99,626 | $-374 |
| $150,000 | $149,439 | $-561 |
Same BEA Regional Price Parity ratio as the table above (93.1 → 92.7), computed live from your number, nothing is sent anywhere.
Slidell-Mandeville-Covington is 0.4% less expensive than Louisville/Jefferson County. The overall cost index is 92.7 vs 93.1 (national average = 100).
A $100,000 salary in Louisville/Jefferson County has the same purchasing power as $99,626 in Slidell-Mandeville-Covington. This is based on the BEA Regional Price Parity indexes.
Rents in Louisville/Jefferson County are indexed at 78.6 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.