Sanibel, Florida Demographics & Population 2026

Population Overview

Sanibel is a small city located in Florida, within Lee County. The total population is 6,418. It ranks as the 429th most populous out of 955 Census-designated places in Florida.

Age Demographics

The median age in Sanibel is 67.3 years. This is 58% higher than the state median of 42.6 years. Only 5.3% of residents are under 18, indicating fewer families with children. 21.6% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Sanibel is $108,644. This is 46% higher than the state median of $74,568. It is also 35% higher than the national median of $80,734. The poverty rate stands at 11.6%. This is 8% lower than the state poverty rate of 12.6%. The unemployment rate is 5.7%. This is 18% higher than the state rate of 4.8%. The median home value is $957,300. Housing costs are 167% higher than the state median of $359,000. The home-value-to-income ratio of 8.8x suggests that housing affordability is a significant concern for many residents. 89.9% of occupied housing units are owner-occupied. This homeownership rate is 33% higher than the state average of 67.6%.

Race & Ethnicity

Sanibel has a predominantly White (non-Hispanic) population, comprising 94.0% of all residents. Hispanic or Latino residents account for 2.0%. The White (non-Hispanic) population is significantly higher than the state average (94.0% vs 50.4%). The Black or African American population (0.7%) is well below the state average of 14.6%. The Hispanic or Latino population (2.0%) is well below the state average of 27.4%. The Asian population (0.7%) is well below the state average of 2.9%.

Education

61.0% of residents aged 25 and older hold a bachelor's degree or higher. This places Sanibel in the top 10% of all cities in the state for educational attainment. This is 79% higher than the state rate of 34.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 99.5%. Notably, 28.7% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Sanibel, Florida is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Florida state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 955 Census-designated places in Florida. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.