St. Clair County, Alabama Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
St. Clair County, AL Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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C
Health Below averageHealthier than 88% of counties in Alabama
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C
Income Below averageWealthier than 91% of counties in Alabama
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F
Education Well below average
Source: Map AI Methodology
Population: density and quick facts
| Metric | St. Clair County | Alabama Avg | U.S. Average |
|---|---|---|---|
| Population | 94,166 | 5,083,438 | 337,468,954 |
| Population density (per sq mi) | 144.2 | 97.0 | 86.4 |
| Population growth (%/yr) | 1.07% | 0.62% | 0.59% |
| Median age | 41.7 | 38.0 | 37.3 |
| Households | 35,107 | 1,996,169 | 130,235,071 |
Population in St. Clair County grew by 21.5% from 2009 to 2024, reaching 94,166 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in St. Clair County is Millennials, aged 29–44, at 22.5% of residents. That is 1.8 points above Alabama as a whole.
- Gen Z 13–28 18,189 19.3% -2.2 pts
- Millennials 29–44 21,225 22.5% +1.8 pts
- Gen X 45–60 20,326 21.6% +1.7 pts
- Boomers 61–79 16,539 17.6% -0.5 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Alabama, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 50.1% of the people living in St. Clair County and men 49.9%.
- Women 50.1% Alabama 51.5%
- Men 49.9% Alabama 48.5%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in St. Clair County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
St. Clair County has a the economy index of C, which means it is somewhat prosperous.
| Metric | St. Clair County | Alabama Avg | U.S. Average |
|---|---|---|---|
| Median household income | $77,657 | $64,544 | $80,455 |
| Income growth (%/yr) | 4.54% | 4.68% | 4.80% |
| Unemployment rate | 4.5% | 4.7% | 5.2% |
The median household income in St. Clair County is about 20% higher than in Alabama.
Housing
| Metric | St. Clair County | Alabama Avg | U.S. Average |
|---|---|---|---|
| Median home price | $214,627 | $160,474 | $248,835 |
| Median rent | $1,083 | $1,007 | $1,407 |
| Homeownership rate | 82.6% | 70.2% | 65.2% |
The median home price in St. Clair County is about 16.5 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,083 per month for that long.
Commute Time & Mobility
Commuters in St. Clair County spend about 62 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 259 hours, about 10.8 full days, spent commuting.
| Metric | St. Clair County | Alabama Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 31.1 | 22.1 | 22.4 |
| Round-trip commute (min) | 62.2 | 44.3 | 44.8 |
| Yearly time spent (hours) | 259 | 184 | 187 |
| Estimated yearly cost | $8,036 | $5,717 | $5,790 |
| Work from home | 11.7% | 8.8% | 15.0% |
| Highway traffic (vehicles/day) | 7,851 | 8,636 | 8,813 |
| Local road traffic (vehicles/day) | 1,250 | 1,193 | 1,355 |
Fastest commutes among counties in
Alabama:
Pike County (16.4 min), Houston County (18.3 min), Escambia County (18.5 min).
Slowest:
Blount County (33.2 min), Pickens County (32.5 min), Lowndes County (31.9 min).
The average commute time in St. Clair County is 31 minutes, longer than the 22 minutes in Alabama.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
St. Clair County has a education index of F, which means it scores poorly in education.
| Metric | St. Clair County | Alabama Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 18.1% | 24.9% | 31.6% |
| Average household size | 2.63 | 2.48 | 2.53 |
Highest education index among counties in
Alabama:
Madison County (0.4), Shelby County (0.3), Lee County (0.3).
Lowest:
Bibb County (0.2), Barbour County (0.2), Wilcox County (0.2).
Health
St. Clair County has a health index of C, which means it is somewhat healthy.
| Metric | St. Clair County | Alabama Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 74.9 | 74.7 | 78.3 |
| Self-rated poor health | 18.8% | 23.4% | 16.3% |
| Smokers | 21.8% | 22.1% | 19.0% |
Highest health index among counties in
Alabama:
Shelby County (0.8), Lee County (0.8), Baldwin County (0.8).
Lowest:
Greene County (0.7), Wilcox County (0.7), Perry County (0.7).
St. Clair County, AL Compared With Nearby Counties
St. Clair County, AL is typical in size for this group, 94,166 residents against a local median of 103,105, so the measures below are close to a like for like comparison. The measure that sets St. Clair County, AL apart most is median home price: $214,627, 62% above the local median of $132,440.
Commute tells the same story from another angle: 31.1 min against a local median of 21.8 min, 43% above it. The picture is mixed rather than uniform: median household income runs ahead of the neighbourhood while commute runs behind it, so St. Clair County, AL is trading one against the other rather than simply out-performing what surrounds it. The counties themselves spread $183,421 on median home price, so St. Clair County, AL sits at one end of an already wide local range rather than apart from it. St. Clair County, AL has the 2nd highest median home price of the 6 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| St. Clair County, AL | 94,166 | $77,657 #2/6 | $214,627 #2/6 | 31.1 min #5/6 |
| Blount County, AL | 59,518 | $64,592 | $76,817 | 33.2 min |
| Talladega County, AL | 81,021 | $56,834 | $198,717 | 21.8 min |
| Etowah County, AL | 103,105 | $54,845 | $116,112 | 20.7 min |
| Calhoun County, AL | 116,090 | $55,107 | $132,440 | 21.1 min |
| Shelby County, AL | 230,211 | $98,402 | $260,238 | 30.3 min |
Frequently Asked Questions
Common questions about St. Clair County, Alabama.
How many people live in St. Clair County, Alabama?
About 94,166 people live in St. Clair County, Alabama, in 35,107 households of 2.6 people on average. The median age is 41.7, so residents are older than the U.S. median of 37.3 by about 4 years.
Is St. Clair County, Alabama urban or rural?
Averaged over its land area, St. Clair County, Alabama has 144 people per square mile, a density typical of a mix of suburbs, small towns and farmland. That is about 1.7 times the U.S. average of 86.
Can a typical household afford a home in St. Clair County, Alabama?
The median home costs 2.8 times the median household income ($214,627 against $77,657), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $1,083 a month takes about 17% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
What share of adults in St. Clair County, Alabama have a college degree?
18.1% of adults in St. Clair County, Alabama hold a bachelor's degree or higher (about 1 in 6), well below the U.S. share of 31.6%.
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