St. John the Baptist Parish, Louisiana Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
St. John the Baptist Parish, LA 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 average
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C
Income Below averageWealthier than 78% of counties in Louisiana
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F
Education Well below average
Source: Map AI Methodology
Population: density and quick facts
| Metric | St. John the Baptist Parish | Louisiana Avg | U.S. Average |
|---|---|---|---|
| Population | 40,683 | 4,610,276 | 337,468,954 |
| Population density (per sq mi) | 99.2 | 88.0 | 86.4 |
| Population growth (%/yr) | -0.95% | -0.10% | 0.59% |
| Median age | 40.1 | 35.9 | 37.3 |
| Households | 15,124 | 1,803,262 | 130,235,071 |
Population in St. John the Baptist Parish declined by 25.4% from 2009 to 2024, reaching 40,683 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in St. John the Baptist Parish is Gen Z, aged 13–28, at 22.6% of residents. That is 1.1 points above Louisiana as a whole.
- Gen Z 13–28 9,182 22.6% +1.1 pts
- Millennials 29–44 8,252 20.3% -1.6 pts
- Gen X 45–60 8,701 21.4% +2.0 pts
- Boomers 61–79 6,402 15.7% -1.4 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 Louisiana, 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 50.9% of the people living in St. John the Baptist Parish and men 49.1%.
- Women 50.9% Louisiana 51.1%
- Men 49.1% Louisiana 48.9%
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Economy
St. John the Baptist Parish has a the economy index of C, which means it is somewhat prosperous.
| Metric | St. John the Baptist Parish | Louisiana Avg | U.S. Average |
|---|---|---|---|
| Median household income | $64,877 | $60,934 | $80,455 |
| Income growth (%/yr) | 2.93% | 3.69% | 4.80% |
| Unemployment rate | 10.8% | 6.2% | 5.2% |
The median household income in St. John the Baptist Parish is about 6% higher than in Louisiana.
Housing
| Metric | St. John the Baptist Parish | Louisiana Avg | U.S. Average |
|---|---|---|---|
| Median home price | $258,490 | $170,446 | $248,835 |
| Median rent | $1,334 | $1,063 | $1,407 |
| Homeownership rate | 77.5% | 67.4% | 65.2% |
The median home price in St. John the Baptist Parish is about 16.2 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,334 per month for that long.
Commute Time & Mobility
Commuters in St. John the Baptist Parish spend about 60 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 251 hours, about 10.5 full days, spent commuting.
| Metric | St. John the Baptist Parish | Louisiana Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 30.1 | 21.3 | 22.4 |
| Round-trip commute (min) | 60.2 | 42.5 | 44.8 |
| Yearly time spent (hours) | 251 | 177 | 187 |
| Estimated yearly cost | $7,776 | $5,493 | $5,790 |
| Work from home | 6.4% | 8.1% | 15.0% |
| Highway traffic (vehicles/day) | 9,730 | 8,275 | 8,813 |
| Local road traffic (vehicles/day) | 1,370 | 1,164 | 1,355 |
Fastest commutes among counties in
Louisiana:
East Carroll Parish (11.4 min), Madison Parish (13.1 min), St. Mary Parish (15.5 min).
Slowest:
West Feliciana Parish (32.8 min), East Feliciana Parish (32.8 min), St. Helena Parish (32.4 min).
The average commute time in St. John the Baptist Parish is 30 minutes, longer than the 21 minutes in Louisiana.
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. John the Baptist Parish has a education index of F, which means it scores poorly in education.
| Metric | St. John the Baptist Parish | Louisiana Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 15.7% | 24.0% | 31.6% |
| Average household size | 2.67 | 2.49 | 2.53 |
Highest education index among counties in
Louisiana:
Orleans Parish (0.3), East Baton Rouge Parish (0.3), St. Tammany Parish (0.3).
Lowest:
East Carroll Parish (0.1), Assumption Parish (0.2), Evangeline Parish (0.2).
Health
St. John the Baptist Parish has a health index of C, which means it is somewhat healthy.
| Metric | St. John the Baptist Parish | Louisiana Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 75.0 | 75.1 | 78.3 |
| Self-rated poor health | 20.6% | 22.3% | 16.3% |
| Smokers | 21.4% | 23.9% | 19.0% |
Highest health index among counties in
Louisiana:
St. Tammany Parish (0.8), Ascension Parish (0.8), Vernon Parish (0.8).
Lowest:
East Carroll Parish (0.7), Madison Parish (0.7), Tensas Parish (0.7).
St. John the Baptist Parish, LA Compared With Nearby Counties
St. John the Baptist Parish, LA is the smallest of the 5 counties compared here, 40,683 residents against a local median of 133,522. The measure that sets St. John the Baptist Parish, LA apart most is median home price: $258,490, 39% above the local median of $185,748.
Median household income tells the same story from another angle: $64,877 against a local median of $80,439, 19% below it. Every measure here with a clear better direction points the same way, and it is the wrong way: St. John the Baptist Parish, LA reads weaker than its neighbours on all of them. The counties themselves spread $222,782 on median home price, so St. John the Baptist Parish, LA sits at one end of an already wide local range rather than apart from it. St. John the Baptist Parish, LA has the 2nd highest median home price of the 5 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| St. John the Baptist Parish, LA | 40,683 | $64,877 #4/5 | $258,490 #2/5 | 30.1 min #4/5 |
| St. Charles Parish, LA | 51,396 | $81,548 | $194,058 | 23.3 min |
| Livingston Parish, LA | 148,115 | $79,329 | $97,745 | 31.9 min |
| Ascension Parish, LA | 130,307 | $92,758 | $177,438 | 28.1 min |
| Tangipahoa Parish, LA | 136,737 | $57,755 | $320,527 | 22.9 min |
Frequently Asked Questions
Common questions about St. John the Baptist Parish, Louisiana.
How many people live in St. John the Baptist Parish, Louisiana?
About 40,683 people live in St. John the Baptist Parish, Louisiana, in 15,124 households of 2.7 people on average. The median age is 40.1, so residents are older than the U.S. median of 37.3 by about 3 years.
Is St. John the Baptist Parish, Louisiana mostly urban or rural?
Averaged over its land area, St. John the Baptist Parish, Louisiana has 99 people per square mile, a density typical of rural areas. That is close to the U.S. average of 86.
How affordable is housing in St. John the Baptist Parish, Louisiana?
The median home costs 4.0 times the median household income ($258,490 against $64,877), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $1,334 a month takes about 25% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
How strong is the job market in St. John the Baptist Parish, Louisiana?
Unemployment in St. John the Baptist Parish, Louisiana is 10.8%, well above the U.S. rate of 5.2%, so job seekers may face more competition than elsewhere.
What share of adults in St. John the Baptist Parish, Louisiana have a college degree?
15.7% of adults in St. John the Baptist Parish, Louisiana hold a bachelor's degree or higher (about 1 in 6), well below the U.S. share of 31.6%.
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