Charleston vs Seattle Cost of Living
Seattle is approximately 15.7% more expensive than Charleston. See salary equivalence, taxes, and side-by-side breakdown.
Charleston, SC
Seattle, WA
| Salary in Charleston | Equivalent in Seattle | Difference |
|---|---|---|
| $50,000 | $57,800 | +$7,800 (+15.6%) |
| $75,000 | $86,800 | +$11,800 (+15.7%) |
| $100,000 | $115,700 | +$15,700 (+15.7%) |
| $150,000 | $173,500 | +$23,500 (+15.7%) |
| $200,000 | $231,400 | +$31,400 (+15.7%) |
Charleston vs Seattle: which is more affordable?
On an overall cost-of-living basis, Seattle is 15.7% more expensive than Charleston. That means if you currently spend $5,000/month in Charleston, you'd spend approximately $5,784 for the same lifestyle in Seattle. Or: $100,000 in Charleston ≈ $115,686 in Seattle for equivalent purchasing power.
These multipliers are based on Bureau of Economic Analysis Regional Price Parities and reflect average housing, food, transportation, and services costs. Real personal costs vary by neighborhood (urban core vs suburb), housing choice (rent vs own, apartment vs house), and lifestyle (frequency of dining out, car-dependent vs transit, etc.).
Tax differences
South Carolina has state income tax, but Washington doesn't. Moving from Charleston to Seattle eliminates state income tax — saving ~5% effective on income, or roughly $5,000/year on $100K.
What costs more (and less) in Seattle
Cost of living differences are driven mostly by housing — typically the biggest expense category. Seattle's housing index (1.02×) compared to Charleston's (0.74×) is the dominant factor.
Food, groceries, and transportation typically vary 5–15% between metros — much less than housing. For a couple moving from Charleston to Seattle, expect roughly:
- Rent / mortgage: 39% higher
- Groceries: 9% higher
- Transportation: 7% higher
- Healthcare, services: roughly proportional to overall index
Things this calculator can't fully capture
- Quality-of-life: weather, walkability, school quality, crime rates, commute times — not in the index.
- Career opportunities: a metro with higher cost-of-living often pays correspondingly higher salaries for the same role. See our salary calculator by job and city.
- Family situation: childcare, school district, eldercare costs vary independently of overall index.
- Lifestyle preferences: a frugal renter pays less than the index suggests; a property owner in a hot market might pay much more.
Related tools
Charleston Paycheck Calculator — exact take-home in Charleston. Seattle Paycheck Calculator — exact take-home in Seattle. Salary Calculator — hourly ↔ annual conversion. Inflation Calculator — purchasing power over time. Mortgage Calculator — what you can afford.