Overall
- Sumter
- 88.0
- Naples-Marco Island
- 103.2
Diff +15.2 RPP
Sumter vs Naples-Marco Island
Cost of living comparison based on BEA Regional Price Parities. Naples-Marco Island is 17.2% more expensive than Sumter.
17.2% more expensive
Naples-Marco Island, FL is 17.2% more expensive than Sumter, SC on BEA Regional Price Parities (overall RPP 103.2 vs 88.0). A $100,000 salary in Sumter buys about the same as $117,246 in Naples-Marco Island; the largest component gap is rents.
- Overall RPP 88.0 (Sumter) vs 103.2 (Naples-Marco Island)
- $100k in Sumter ≈ $117,246 purchasing power in Naples-Marco Island
- Rents drives the gap (+68.6 RPP points)
RPP parity plate
Pair SC:FL 88.0→103.2
TIER-GAP · CROSS-STATE · SPLIT-BUDGET · BENCH-CROSS · PP-STEEP
- TIER-GAP Clear tier gap
- CROSS-STATE SC × FL
- SPLIT-BUDGET Split budget
- 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.
Category Breakdown
Goods
- Sumter
- 96.3
- Naples-Marco Island
- 96.2
Diff -0.1 RPP
Services
- Sumter
- 87.3
- Naples-Marco Island
- 87.8
Diff +0.5 RPP
Rents
- Sumter
- 60.8
- Naples-Marco Island
- 129.4
Diff +68.6 RPP
| Category | Sumter | Naples-Marco Island | Difference |
|---|---|---|---|
| Overall | 88.0 | 103.2 | +15.2 |
| Goods | 96.3 | 96.2 | -0.1 |
| Services | 87.3 | 87.8 | +0.5 |
| Rents | 60.8 | 129.4 | +68.6 |
Visual Comparison
Overall
Sumter 88.0
Naples-Marco Island 103.2
Goods
Sumter 96.3
Naples-Marco Island 96.2
Services
Sumter 87.3
Naples-Marco Island 87.8
Rents
Sumter 60.8
Naples-Marco Island 129.4
Vertical line = national average (100)
What This Comparison Actually Tells You
Rents creates the largest separation: Naples-Marco Island is 68.6 points higher. But goods move against the overall direction, so this is a split budget rather than a clean across-the-board winner.
Sumter, SC and Naples-Marco Island, FL sit in clearly different price tiers, separated by 15.2 RPP points. At this distance, treating the same nominal salary as equivalent would materially change purchasing power.
This route crosses the national benchmark: Naples-Marco Island is above 100 while Sumter is below it. That makes the move a change of price regime, not merely a rank swap.
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 Sumter corresponds to $117,246 in Naples-Marco Island.
Sumter
88.0
Cost Index
Naples-Marco Island
103.2
Cost Index
Salary Equivalents
What a salary in Sumter would need to be in Naples-Marco Island for the same purchasing power:
| In Sumter | In Naples-Marco Island | Difference |
|---|---|---|
| $50,000 | $58,623 | +$8,623 |
| $75,000 | $87,935 | +$12,935 |
| $100,000 | $117,246 | +$17,246 |
| $150,000 | $175,869 | +$25,869 |
$ in Sumter = in Naples-Marco Island
Same BEA Regional Price Parity ratio as the table above (88.0 → 103.2), computed live from your number, nothing is sent anywhere.
How the Price Gap Changed
Sumter and Naples-Marco Island share 17 published annual releases from 2008 through 2024. Their overall gap held broadly steady, moving from 14.9 to 15.2 RPP points. Naples-Marco Island remained the higher-index metro in the latest release.
Services changed the most within this pair: its gap moved 5.8 points between the first and latest shared releases (6.3 to 0.5 points). This describes a relative price-index history, not a forecast or a household budget.
| Release Year | Sumter RPP | Naples-Marco Island RPP | Relative Gap |
|---|---|---|---|
| 2008 | 89.4 | 104.3 | 14.9 points Naples-Marco Island higher |
| 2012 | 89.6 | 101.6 | 12.1 points Naples-Marco Island higher |
| 2016 | 87.1 | 103.8 | 16.7 points Naples-Marco Island higher |
| 2020 | 81.4 | 99.1 | 17.7 points Naples-Marco Island higher |
| 2024 | 88.0 | 103.2 | 15.2 points Naples-Marco Island higher |
Annual BEA Regional Price Parity releases; a higher index means a higher price level relative to the national average of 100. Selected years shown from the full shared series.
Frequently Asked Questions
Is Naples-Marco Island more expensive than Sumter?
Naples-Marco Island is 17.2% more expensive than Sumter. The overall cost index is 103.2 vs 88.0 (national average = 100).
What salary in Naples-Marco Island equals $100K in Sumter?
A $100,000 salary in Sumter has the same purchasing power as $117,246 in Naples-Marco Island. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Sumter and Naples-Marco Island?
Rents in Sumter are indexed at 60.8 while Naples-Marco Island is at 129.4 (national average = 100). Naples-Marco Island 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.