Overview
Miami-Dade County is home to 2,685,296 people (Census ACS 5-Year, 2023), making it the most populous county in Florida and one of the largest in the United States. Its population ranks higher than 99% of Florida counties and virtually all U.S. counties nationally.
The county's demographic and economic profile sets it apart from most of the country. Nearly 69% of residents identify as Hispanic or Latino (Census ACS 5-Year, 2023), a share higher than 99% of U.S. counties. Median household income sits at $68,694 (Census ACS 5-Year, 2023), while median home values reach $425,400 (Census ACS 5-Year, 2023), placing housing costs above 94% of counties nationwide.
With a labor force of 1,470,605 (BLS LAUS, 2025) and 43 federally declared disasters on record (FEMA OpenFEMA, 2026), Miami-Dade carries the weight of a major metropolitan economy paired with serious and recurring climate exposure.
Demographics
The median age in Miami-Dade is 40.8 years (Census ACS 5-Year, 2023), younger than about 57% of U.S. counties. That's consistent with a large urban county that attracts working-age residents and immigrants.
The racial and ethnic composition skews heavily Hispanic. The breakdown: 68.8% Hispanic or Latino, 14.6% Black, 12.9% white (non-Hispanic), 1.5% Asian, and 0.1% Native American (Census ACS 5-Year, 2023). The Hispanic share is higher than 99% of U.S. counties, and within Florida, no other county comes close to that concentration.
Educational attainment runs above the national median. About 33.2% of adults hold a bachelor's degree or higher (Census ACS 5-Year, 2023), ranking above 84% of U.S. counties. Within Florida, that places Miami-Dade in the upper third of counties. For a county this large, that level of degree attainment reflects both a professional workforce and the draw of several major universities in the region.
Education
Miami-Dade County Public Schools enrolled 334,261 students (Education Data Portal, 2021), a figure that ranks above virtually every other school district in the country by sheer size.
Per-pupil spending was $12,440 (Education Data Portal, 2020). That's roughly $2,560 below the national average of about $15,000, and it places Miami-Dade below about 77% of U.S. counties on that metric. For one of the nation's largest school systems, the gap between enrollment scale and per-student investment is worth noting.
The student-teacher ratio stands at 18.9 to 1 (Education Data Portal, 2021), higher than 95% of U.S. counties and well above the national average of roughly 15.5 to 1. Classrooms here are more crowded than in most of the country.
The graduation rate is 89% (Education Data Portal, 2019), above the national average of approximately 87%. That's a solid outcome given the district's size and the relatively lower per-pupil funding. Still, the combination of below-average spending and above-average class sizes raises questions about how long those graduation numbers can hold without more investment.
Economy & Employment
The unemployment rate in Miami-Dade is 2.5% (BLS LAUS, 2025), lower than 93% of U.S. counties and the lowest among all Florida counties. Out of a labor force of 1,470,605, just 36,255 residents are unemployed. By any measure, the local labor market is tight.
Income tells a more complicated story. Median household income of $68,694 (Census ACS 5-Year, 2023) ranks higher than 64% of U.S. counties but falls in the middle of the pack for Florida, sitting at roughly the 57th ranking among the state's counties. Per capita income is $37,858 (Census ACS 5-Year, 2023), above 71% of counties nationally.
Average adjusted gross income per tax return was $99,404 (IRS Statistics of Income, 2021), and average total income was $100,263 (IRS Statistics of Income, 2021). Both figures rank above 93% of U.S. counties, suggesting a substantial high-earning segment pulling the averages well above the medians.
The poverty rate is 14.7% (Census ACS 5-Year, 2023), higher than about 63% of U.S. counties. That's a significant number in a county where unemployment is near historic lows. People are working, but a sizable share aren't earning enough to clear the poverty line. The gap between the average income of $99,404 and the median of $68,694 points to an income distribution with a long upper tail and a wide base of lower earners.
Housing & Cost of Living
Median home value in Miami-Dade is $425,400 (Census ACS 5-Year, 2023), higher than 94% of U.S. counties and 94% of Florida counties. Median gross rent is $1,731 per month (Census ACS 5-Year, 2023), above 97% of counties nationally. Housing here is expensive by nearly any comparison.
Fair market rent data by bedroom count was not available for Miami-Dade County (HUD Fair Market Rents, 2026).
The county has 1,085,414 total housing units, with 120,609 of them vacant, producing a vacancy rate of 11.1% (Census ACS 5-Year, 2023). That vacancy rate is lower than about 67% of U.S. counties and sits in the bottom 13% of Florida counties. For context, Florida is a state with considerable seasonal and vacation housing stock, so Miami-Dade's relatively low vacancy rate reflects sustained year-round demand rather than a surplus of empty units.
The affordability math is getting harder. A household earning the median income of $68,694 would spend roughly 30% of pre-tax income on median rent alone. That's the threshold where housing costs become a burden by federal standards, and it doesn't account for utilities, insurance, or the reality that many households earn below the median. With home values above $425,000, ownership is out of reach for a large share of the population.
The average commute time is 27.2 minutes (Census ACS 5-Year, 2023), longer than 83% of U.S. counties. Workers willing to live farther from employment centers for cheaper housing are paying for it in time.
Health & Wellness
The most striking health metric in Miami-Dade is the uninsured rate. About 26.2% of adults lack health insurance (CDC PLACES, 2023), higher than 98% of U.S. counties. More than one in four adults doesn't have coverage. Within Florida, only a handful of counties report higher rates.
Obesity stands at 29.3% (CDC PLACES, 2023), lower than 95% of U.S. counties. That's one of the lowest obesity rates in the country, and it's reflected in other metrics too. The depression rate is 14.0% (CDC PLACES, 2023), lower than virtually all U.S. counties. Poor mental health days affect 15.2% of the population (CDC PLACES, 2023), also lower than 96% of counties nationally.
Diabetes prevalence is 13.3% (CDC PLACES, 2023), which is higher than 83% of U.S. counties. High blood pressure affects 30.3% of adults (CDC PLACES, 2023), placing the county below about 74% of counties nationally on that measure. These chronic conditions exist alongside otherwise favorable health indicators.
Preventive care utilization is moderate. About 74.0% of adults report an annual checkup (CDC PLACES, 2023), and 84.4% have had cholesterol screening (CDC PLACES, 2023). Poor physical health days affect 13.7% of the population (CDC PLACES, 2023), roughly in the middle of U.S. counties.
The combination of low obesity and depression rates with a high uninsured rate creates an unusual health profile. Residents are, by several measures, healthier than most Americans, but a quarter of the adult population lacks formal access to the healthcare system. That gap between health outcomes and health coverage is a defining feature of the county's public health picture.
Climate & Natural Disasters
Miami-Dade sits at the top of every temperature ranking in the country. Average temperature is 77.7°F (NOAA Climate Data Online, 2025), higher than virtually every other U.S. county. Highs average 85.4°F and lows rarely dip below 70°F. Snow is functionally nonexistent (0 inches, NOAA, 2025).
Rainfall is substantial. The county gets 48.5 inches annually (NOAA, 2025), more than 78% of U.S. counties. Most of that arrives in a compressed wet season between June and October.
That wet season overlaps directly with hurricane season. FEMA records show 43 federal disaster declarations since 1965 (FEMA OpenFEMA, 2026), higher than 97% of U.S. counties. Hurricanes account for the majority of those declarations. The most recent came in October 2024. Hurricane Andrew in 1992 remains the most destructive, but 2004 and 2005 each brought multiple storm declarations in a single season. There was another active stretch in 2022, with two hurricane declarations and a tropical storm emergency.
The disaster record also includes a handful of freezing events, three fire incidents, and a tornado declaration from 1993. These aren't the headline risks, but they've triggered federal declarations.
The trajectory here matters. A warmer Atlantic and rising sea levels increase both storm intensity and flood exposure. For anyone buying or insuring property in Miami-Dade, the 43-declaration history isn't a historical curiosity. It's a preview of what the actuarial math reflects every year at renewal.
Financial Profile
Miami-Dade filed 1,389,090 tax returns in 2021, reporting $138.1 billion in total adjusted gross income and $139.3 billion in total income (IRS Statistics of Income, 2021). Both figures rank above virtually all U.S. counties by volume, reflecting the county's sheer economic scale.
Average AGI of $99,404 per return (IRS Statistics of Income, 2021) ranks above 93% of counties nationally. That average, sitting roughly $31,000 above the median household income, reinforces the income disparity visible in the poverty and earnings data.
Banking access is broad. The county has 197 FDIC-insured bank branches holding $78.0 billion in total deposits (FDIC Summary of Deposits, 2023). Branch count ranks above 97% of U.S. counties, and total deposits rank above 99%. The concentration of deposits reflects Miami-Dade's role as a financial hub, particularly for Latin American banking and international commerce.
Social Security benefits reach 453,930 OASDI beneficiaries (SSA OASDI, 2024), a number that ranks above virtually all U.S. counties. With the median age at 40.8, the beneficiary count relative to total population suggests a substantial retiree population alongside the working-age majority.
Key Comparisons
Miami-Dade's profile is defined by contrasts that show up in the data.
On housing costs, the county ranks in the top 6% nationally for home values and the top 3% for rents, but household income ranks only in the top 36%. The mismatch between earnings and housing costs is sharper here than in most U.S. counties.
Health insurance coverage is among the worst in the country (higher uninsured rate than 98% of counties), yet obesity and depression rates are among the lowest (lower than 95% and nearly 100% of counties, respectively). The county is simultaneously healthier and less insured than almost anywhere else.
Employment is extremely strong, with unemployment lower than 93% of counties. But the 14.7% poverty rate is higher than 63% of counties, indicating that job availability and economic security don't align for everyone.
Education spending per pupil ($12,440) falls below 77% of U.S. counties, while the student-teacher ratio (18.9:1) is higher than 95%. The system produces an 89% graduation rate despite those resource constraints, but the pressure on classroom capacity is clear.
Within Florida, Miami-Dade's income ranks mid-range (57th among state counties) despite being far and away the most populous. Smaller Florida counties with tourism or retirement-driven economies often post higher median incomes with a fraction of the population.
The disaster exposure (higher than 97% of counties) paired with high property values and density creates an outsized risk profile for climate-related loss. No county in Florida has more housing units or more people in the path of recurring hurricanes.
Data Sources
- Census ACS 5-Year, 2023: Population, income, housing, demographics, education attainment, commute times, poverty rate
- BLS LAUS, 2025: Unemployment rate, labor force, employment counts
- CDC PLACES, 2023: Health metrics including obesity, diabetes, mental health, insurance coverage, preventive care
- HUD Fair Market Rents, 2026: Data not available for Miami-Dade County
- FEMA OpenFEMA, 2026: Disaster declarations and history
- IRS Statistics of Income, 2021: Tax returns, adjusted gross income, total income
- FDIC Summary of Deposits, 2023: Bank branch counts and total deposits
- NOAA Climate Data Online, 2025: Temperature and precipitation averages
- SSA OASDI, 2024: Social Security beneficiary counts
- USDA Census of Agriculture, 2022: Data not available for Miami-Dade County
- Education Data Portal, 2021: Per-pupil spending, enrollment, student-teacher ratio, graduation rate