Jefferson Parish vs St. Tammany Parish

A side-by-side comparison of Jefferson Parish and St. Tammany Parish: population, income, housing, and more.

Jefferson Parish and St. Tammany Parish are counties in Louisiana. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Jefferson Parish has the higher population (432,484 vs 269,331 in St. Tammany Parish). St. Tammany Parish has the higher median household income ($79,277 vs $65,246 in Jefferson Parish). St. Tammany Parish has the higher median home value ($272,200 vs $243,500 in Jefferson Parish).

Population, income & housing

	Jefferson Parish	St. Tammany Parish
Population	432,484	269,331
Median age	39.9 yrs	40.4 yrs
Median household income	$65,246	$79,277
Median home value	$243,500	$272,200
Median gross rent	$1,162	$1,305
Housing units	194,109	112,414
Homeownership rate	62.3%	78.8%
Bachelor's degree or higher	29.9%	36.6%
Unemployment rate	5.9%	4.8%

Trends (ACS 5-year, 2019–2023)

	Jefferson Parish	St. Tammany Parish
Population	434,850 → 432,484 (-0.5%)	255,155 → 269,331 (+5.6%)
Median household income	$54,032 → $65,246 (+20.8%)	$68,905 → $79,277 (+15.1%)
Median home value	$188,200 → $243,500 (+29.4%)	$218,500 → $272,200 (+24.6%)
Median gross rent	$972 → $1,162 (+19.5%)	$1,086 → $1,305 (+20.2%)

Jefferson Parish

Population

434,850432,484

Median household income

$54,032$65,246

Median home value

$188,200$243,500

Median gross rent

$972$1,162

St. Tammany Parish

Population

255,155269,331

Median household income

$68,905$79,277

Median home value

$218,500$272,200

Median gross rent

$1,086$1,305

Age & race/ethnicity

Age distribution (share)

	Jefferson Parish	St. Tammany Parish
Under 5	6.3%	5.8%
5 to 17	16.1%	18.0%
18 to 24	7.4%	7.6%
25 to 34	13.6%	11.2%
35 to 44	13.1%	13.3%
45 to 54	11.8%	12.5%
55 to 64	13.6%	13.6%
65 to 74	10.9%	11.1%
75 and over	7.2%	6.9%

Race & ethnicity (share)

	Jefferson Parish	St. Tammany Parish
White (non-Hispanic)	48.1%	73.3%
Black or African American	25.6%	12.0%
American Indian & Alaska Native	0.1%	0.2%
Asian	4.1%	1.3%
Native Hawaiian & Pacific Islander	0.0%	0.3%
Some other race	0.6%	0.8%
Two or more races	3.2%	4.1%
Hispanic or Latino	18.2%	7.9%

Educational attainment (age 25+)

Share of adults 25+

	Jefferson Parish	St. Tammany Parish
No high school diploma	13.4%	8.6%
High school graduate	27.7%	24.0%
Some college or associate's	28.9%	30.8%
Bachelor's degree	19.0%	23.7%
Graduate or professional degree	11.0%	12.8%

Commute to work

How workers get to work (share)

	Jefferson Parish	St. Tammany Parish
Drove alone	77.3%	77.4%
Carpooled	11.2%	7.6%
Public transit	0.9%	0.1%
Walked	1.7%	0.8%
Bicycle	0.2%	0.1%
Worked from home	7.4%	12.4%
Other means	1.3%	1.5%

Housing

Units in structure (share)

	Jefferson Parish	St. Tammany Parish
1-unit, detached	65.1%	77.4%
1-unit, attached	4.2%	2.5%
2 to 4 units	10.0%	4.2%
5 to 19 units	9.9%	4.9%
20 or more units	9.0%	4.2%
Mobile home & other	1.8%	6.8%

Poverty & households

	Jefferson Parish	St. Tammany Parish
Poverty rate	16.3%	12.2%
Average household size	2.43	2.58
Mean commute (minutes)	24	31
Median year structure built	1975	1995