Overview
Jefferson County is Alabama's most populous county, home to 669,744 residents (Census ACS 5-Year, 2023). That population ranks higher than 97% of all U.S. counties and sits at the top of Alabama's 67 counties. Birmingham, the state's largest city, anchors the county and serves as a regional hub for healthcare, finance, and education across the Deep South.
The county's median household income of $64,589 (Census ACS 5-Year, 2023) falls near the national midpoint, higher than about 53% of U.S. counties but well above Alabama's median. Per capita income reaches $39,826 (Census ACS 5-Year, 2023), a figure that exceeds 78% of counties nationally and 94% within the state. That gap between household and per capita income reflects the county's mix of high-earning professionals and a sizable population living below the poverty line.
The labor force totals 324,004 workers (BLS LAUS, 2025), and unemployment sits at just 2.3% (BLS LAUS, 2025), lower than 97% of U.S. counties. For a county of this size, that's a tight labor market by any measure.
Demographics
Jefferson County skews young. The median age is 37.8 years (Census ACS 5-Year, 2023), younger than 81% of U.S. counties and 91% of Alabama counties. A younger workforce can signal economic vitality, but it also means higher demand for schools, childcare, and entry-level jobs.
The racial composition is roughly split: 47.9% white and 42.3% Black (Census ACS 5-Year, 2023). That Black population share ranks higher than 95% of all U.S. counties, making Jefferson one of the most racially significant counties in the country by sheer numbers. Hispanic residents account for 5.2%, Asian residents 1.8%, and Native American residents 0.1% (Census ACS 5-Year, 2023).
Education attainment stands out. Some 35.9% of adults hold a bachelor's degree or higher (Census ACS 5-Year, 2023), a rate that exceeds 88% of U.S. counties and 94% of Alabama counties. The University of Alabama at Birmingham, Samford University, and Birmingham-Southern College all contribute to that concentration of degree holders. In a state where educational attainment often lags national averages, Jefferson County is a clear outlier.
Education
Total enrollment across Jefferson County's public schools reaches 101,009 students (Education Data Portal, 2021), placing it among the top 3% nationally by enrollment volume. Per-pupil spending comes in at $13,705 (Education Data Portal, 2020), which falls below the national average of roughly $15,000. Within Alabama, though, that figure ranks higher than 87% of counties, reflecting a state that generally spends less per student than much of the country.
The student-teacher ratio is 18.9:1 (Education Data Portal, 2021), well above the national average of about 15.5:1 and higher than 95% of U.S. counties. Larger class sizes at this level can strain individualized instruction, particularly in schools serving high-poverty neighborhoods.
The graduation rate is 87.5% (Education Data Portal, 2019), sitting right at the national average and near the middle of Alabama's range. That's a stable number but not one that signals rapid improvement. Given the county's above-average education spending within the state and its large, diverse student body, the graduation rate is a metric worth watching over time.
Economy & Employment
The unemployment rate of 2.3% (BLS LAUS, 2025) places Jefferson County lower than 97% of U.S. counties, meaning almost every county in the country has higher unemployment. Out of a labor force of 324,004, just 7,596 workers are unemployed (BLS LAUS, 2025). That's an exceptionally tight market. Employers in healthcare, education, banking, and construction compete for a limited pool of available workers.
Median household income of $64,589 (Census ACS 5-Year, 2023) sits slightly above the national midpoint. But the poverty rate tells a different story: 15.9% of residents live below the poverty line (Census ACS 5-Year, 2023), a figure higher than 70% of U.S. counties. Income inequality runs deep here. The county has both a well-educated professional class earning high salaries and a significant low-income population concentrated in specific neighborhoods.
IRS data reinforces this split. The average adjusted gross income per tax return is $94,383 (IRS Statistics of Income, 2021), which ranks higher than 92% of counties nationally. Total AGI across 293,490 returns reached $27.7 billion (IRS Statistics of Income, 2021). High earners pull that average up considerably, masking the experience of households at the lower end.
The mean commute is 22.1 minutes (Census ACS 5-Year, 2023), shorter than about half of U.S. counties. Birmingham's relatively compact metro area and highway network keep drive times moderate compared to larger Southern metros like Atlanta or Nashville.
Housing & Cost of Living
The median home value in Jefferson County is $224,900 (Census ACS 5-Year, 2023), higher than 70% of U.S. counties and 90% of Alabama counties. For the state's economic center, that's expected. Home values here track well above most of Alabama but remain modest compared to coastal metros or Sun Belt boomtowns.
Median gross rent is $1,132 per month (Census ACS 5-Year, 2023), a figure that exceeds 82% of U.S. counties. Renters here pay more than in most of the country, though the number remains well below rents in major coastal markets.
Fair market rent data by bedroom count is not available for Jefferson County (HUD Fair Market Rents, 2026).
The county has 309,542 total housing units, with 40,631 sitting vacant (Census ACS 5-Year, 2023). That's a vacancy rate of 13.1%, which falls in the lower half nationally (higher than only 43% of counties). Elevated vacancy often reflects older housing stock, population loss in specific neighborhoods, or properties in disrepair. In Jefferson County, where population has been relatively stable, vacant units likely concentrate in areas with aging infrastructure and limited investment.
With a median home value roughly 3.5 times the median household income, homeownership remains within reach for many working households. But the 15.9% poverty rate means a significant share of residents face a housing cost burden that the county-level medians don't fully capture.
Health & Wellness
High blood pressure affects 40% of adults in Jefferson County (CDC PLACES, 2023), a rate higher than 90% of U.S. counties. Obesity runs at 37.6% (CDC PLACES, 2023), and diabetes prevalence is 13.5% (CDC PLACES, 2023), higher than 85% of counties nationally. These three conditions are closely linked, and their co-occurrence at these levels signals a population dealing with chronic disease at above-average rates.
Depression affects 23.2% of adults (CDC PLACES, 2023), while 17.5% report frequent poor mental health days (CDC PLACES, 2023). That mental health figure actually ranks better than 73% of U.S. counties, and within Alabama, Jefferson County reports fewer poor mental health days than 93% of its peers. Physical health follows a similar pattern: 12.1% report frequent poor physical health days (CDC PLACES, 2023), better than 82% of counties nationally.
Preventive care numbers are strong. Cholesterol screening reaches 85.8% of adults (CDC PLACES, 2023), higher than 89% of U.S. counties. Annual checkup rates hit 80% (CDC PLACES, 2023), topping 95% of counties nationally. Birmingham's concentration of hospitals and medical schools, anchored by UAB Medicine, likely drives those numbers. Access to care in urban Jefferson County outpaces what rural counties can offer.
The uninsured rate is 9.3% (CDC PLACES, 2023), meaning roughly one in eleven residents lacks health coverage. That's lower than about 65% of U.S. counties, a figure shaped in part by Alabama's decision not to expand Medicaid under the Affordable Care Act. The uninsured rate would likely be lower still with expansion.
Climate & Natural Disasters
Jefferson County has 39 federal disaster declarations on record (FEMA OpenFEMA, 2026), higher than 95% of U.S. counties. That's the headline for climate risk here.
The climate itself is temperate. Average annual temperature is 64.8°F, highs average 76°F, lows average 53.5°F (NOAA Climate Data Online, 2025). Annual precipitation is 51.8 inches (NOAA, 2025), wetter than 84% of counties nationally. Snow averages just 2.5 inches per year (NOAA, 2025).
Severe storms account for most of the FEMA record, with declarations going back to 1970. Hurricane exposure is real despite the county sitting roughly 250 miles inland. Tropical systems regularly reach Birmingham with enough force to trigger federal declarations; the most recent was September 2024 (FEMA, 2026).
The worst concentrated damage came in April 2011, when a tornado outbreak generated both a major disaster declaration and a same-day emergency declaration. Floods have added four more declarations since 1973.
Jefferson County ranks above 96% of U.S. counties for unique disaster types (FEMA OpenFEMA, 2026), meaning its hazard profile covers nearly every category: storms, hurricanes, tornadoes, floods, drought, and fire. Standard homeowner's policies don't cover all of it. Flood insurance in particular is worth evaluating carefully before purchase.
Financial Profile
The average adjusted gross income was $94,383 per return (IRS Statistics of Income, 2021), higher than 92% of U.S. counties. Median household income ranks higher than about 53% of counties nationally. That spread reflects meaningful income concentration among high earners.
Collectively, 293,490 returns reported $27.7 billion in adjusted gross income (IRS Statistics of Income, 2021), a tax base higher than 96% of U.S. counties.
The banking footprint is exceptional. Jefferson County has 1,344 bank branches (FDIC Summary of Deposits, 2023), more than virtually every other U.S. county. Total deposits reached $145.9 billion (FDIC Summary of Deposits, 2023), higher than 99% of U.S. counties.
There are 139,395 OASDI beneficiaries (SSA OASDI, 2024), a count higher than 97% of U.S. counties, roughly proportional to the county's overall population size.
Average income higher than 92% of counties signals a high-earning tier; median income near the national midpoint tells a different story about where most households land. That gap is the defining tension in the county's financial picture, and it doesn't close automatically.
Key Comparisons
Jefferson County's position within Alabama is dominant. It's the state's largest county by population, labor force, employment, tax returns, total income, and school enrollment, exceeding 99% of Alabama counties in each of those categories. Per capita income, median home value, median rent, and education attainment all rank in the top 6% statewide.
Nationally, the picture is more nuanced. The county ranks in the top 3% for population and labor force size, but its median household income sits near the 53rd national mark, essentially average. The poverty rate of 15.9% is higher than 70% of counties, creating a gap between the county's aggregate economic output and the lived experience of its lower-income residents.
Health metrics split along predictable lines. Preventive care and checkup rates are excellent (top 5% to 11% nationally), reflecting Birmingham's medical infrastructure. But chronic disease prevalence, particularly high blood pressure and diabetes, runs well above national norms.
The disaster exposure stands out. With 39 FEMA declarations, Jefferson County faces more federally recognized disasters than 95% of U.S. counties. Combined with aging housing stock (13.1% vacancy rate) and concentrated poverty, storm events hit some neighborhoods harder than countywide data suggests.
Education spending per pupil ($13,705) falls below the national average despite ranking high within Alabama, a reminder that state-level comparisons and national comparisons tell different stories. The student-teacher ratio of 18.9:1 is among the highest in the country, a pressure point in a county that otherwise leads its state in educational attainment.
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 Jefferson 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 Jefferson County
- Education Data Portal, 2021: Per-pupil spending, enrollment, student-teacher ratio, graduation rate