Cost of Living & Housing in Key Largo
Key Largo carries a genuine Keys-level cost premium across housing, rent, insurance, and everyday expenses -- driven by the same hard land constraint and hurricane/flood exposure that shapes the rest of the Florida Keys, even though it's the most mainland-accessible of them.
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Learn moreHousing prices and rent
The base place record cites a median sale price of $863,000 (up 1.5% YoY) at $571/sqft (down 27.4% YoY), with homes averaging 182 days on market versus 73 days a year earlier -- a real slowdown signal even as the headline price held roughly flat. On the rental side, sources put average rent around $3,500-$3,700/month as of mid-2026, roughly 79% above the national average, ranging from about $1,750/month for a studio to $5,500/month for a 4-bedroom unit; two-bedroom rents rose nearly 14% year-over-year in one source while four-bedroom rents fell about 18% -- a genuinely mixed, size-dependent rental trend rather than one uniform direction.
Everyday cost of living
Cost-of-living index estimates for Key Largo cluster in the 141-148 range against a national baseline of 100 (roughly 41-48% above average), consistent across HomeSnacks, BestPlaces, and ERI. Salary.com's 2026 estimate put monthly costs at $2,808 for a single adult and $6,184 for a family of four, with housing running about 23.4% above the national average and food about 5% above.
Insurance -- the biggest and most volatile cost
Monroe County homeowners insurance is reported to run $7,000-$18,000+/year for $300,000 in dwelling coverage, and increased about 34% between 2022 and 2024 alone -- though 2026 brought the county's first broad rate relief since 2019, with an average 11.3% homeowner rate reduction plus reductions on thousands of wind-only policies. Flood insurance adds a separate cost layer: most current Key Largo flood policies average around $700/year, but the median risk-based cost (what a policy would cost without legacy rate caps) runs a much higher $4,697, and broader Keys-wide flood premiums are reported ranging from about $600 to as high as $23,000/year depending on the property. Treat these as a genuinely wide, disclosed range rather than a single expected number -- get a property-specific quote before budgeting.
Key takeaways
- Median sale price is about $863,000 (per the base place record), but days on market more than doubled year-over-year (73 to 182) -- a real slowdown, not a hot market, despite the roughly flat price.
- Average rent runs about $3,500-$3,700/month, roughly 79% above the national average, with rent trends varying by unit size rather than moving uniformly.
- Key Largo's cost-of-living index runs about 41-48% above the national average across multiple sources -- a consistent, not disputed, premium.
- Insurance is the standout cost and the widest-ranging figure: homeowners coverage of $7,000-$18,000+/year plus flood coverage from roughly $700 (current average) up to several thousand dollars a year depending on risk-based pricing -- 2026 brought the first rate relief since 2019, but costs remain well above mainland Florida.
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