St. Tammany Parish, LA Population Statistics: Density Map Data
Analyze local population trends, population density map, housing costs, and the local economy.
Area Snapshot Statistics
Key statistics on population, economy, housing, and commuting compared to state and national averages. Explore interactive maps for deeper analysis.
Population: density and quick facts
| Metric | St. Tammany Parish | Louisiana Avg | U.S. Average |
|---|---|---|---|
| Population | 271,711 | 4,588,640 | 334,821,731 |
| Population density (per sq mi) | 247.7 | 87.6 | 85.8 |
| Population growth (%/yr) | 1.31% | -0.07% | 0.57% |
| Median age | 40.6 | 35.4 | 37.1 |
| Households | 103,281 | 1,781,402 | 128,459,983 |
Population in St. Tammany Parish grew by 19.7% from 2009 to 2023, reaching 269,317 in 2023.
Population Growth 2009–2023
Race & Ethnicity
Economy
St. Tammany Parish has a the economy index of B, which means it is quite prosperous.
| Metric | St. Tammany Parish | Louisiana Avg | U.S. Average |
|---|---|---|---|
| Median household income | $79,900 | $60,029 | $78,145 |
| Income growth (%/yr) | 3.32% | 3.98% | 5.07% |
| Unemployment rate | 4.8% | 6.3% | 5.2% |
The median household income in St. Tammany Parish is about 33% higher than in Louisiana.
Housing
| Metric | St. Tammany Parish | Louisiana Avg | U.S. Average |
|---|---|---|---|
| Median home price | $230,130 | $166,764 | $242,182 |
| Median rent | $1,305 | $1,038 | $1,342 |
| Homeownership rate | 78.8% | 67.3% | 65.1% |
The median home price in St. Tammany Parish is about 14.7 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,305 per month for that long.
Commute Time & Mobility
Commuters in St. Tammany Parish spend about 53 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 222 hours, about 9.3 full days, spent commuting.
| Metric | St. Tammany Parish | Louisiana Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 26.7 | 21.3 | 22.5 |
| Round-trip commute (min) | 53.3 | 42.6 | 44.9 |
| Yearly time spent (hours) | 222 | 177 | 187 |
| Estimated yearly cost | $6,886 | $5,502 | $5,803 |
| Work from home | 12.4% | 7.2% | 13.4% |
| Highway traffic (vehicles/day) | 13,914 | 8,275 | 8,813 |
| Local road traffic (vehicles/day) | 1,606 | 1,164 | 1,355 |
Fastest commutes among counties in
Louisiana:
Madison Parish (12.9 min), East Carroll Parish (13.7 min), Lincoln Parish (15.4 min).
Slowest:
East Feliciana Parish (33.1 min), St. Helena Parish (32.3 min), Livingston Parish (32.0 min).
The average commute time in St. Tammany Parish is 27 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. Tammany Parish has a education index of B, which means it is quite educated.
| Metric | St. Tammany Parish | Louisiana Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 33.7% | 24.0% | 31.6% |
| Average household size | 2.58 | 2.52 | 2.54 |
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. Tammany Parish has a health index of B, which means it is quite healthy.
| Metric | St. Tammany Parish | Louisiana Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 77.6 | 75.1 | 78.3 |
| Self-rated poor health | 15.6% | 22.3% | 16.3% |
| Smokers | 18.3% | 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).
Frequently Asked Questions
Common questions about St. Tammany Parish, Louisiana.
What is the population of St. Tammany Parish, Louisiana?
The population of St. Tammany Parish, Louisiana is 271,711, compared to the U.S. total of 334,821,731.
What is the population density of St. Tammany Parish, Louisiana?
The population density of St. Tammany Parish, Louisiana is 247.7 people per square mile, compared to the U.S. average of 85.8 people per square mile.
What is the median household income in St. Tammany Parish, Louisiana?
The median household income in St. Tammany Parish, Louisiana is $79,900, compared to the U.S. median of $78,145.
What is the median home price in St. Tammany Parish, Louisiana?
The median home price in St. Tammany Parish, Louisiana is $230,130, compared to the U.S. median of $242,182.
What is the unemployment rate in St. Tammany Parish, Louisiana?
The unemployment rate in St. Tammany Parish, Louisiana is 4.8%, compared to the U.S. average of 5.2%.