St. John the Baptist Parish, Louisiana Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 27th-largest in Louisiana
The population of St. John the Baptist Parish, Louisiana is 41,342 as of the 2023 American Community Survey, making it the 27th-largest county in Louisiana. The median household income is $67,418, the median home value is $184,000, and the median age is 38.5.
The population of St. John the Baptist Parish has declined 12.9% since 2010 (45,588 → 39,694), a -0.98% annualized rate.
41,342
Population
-0.98%
Annual growth
193
People / sq mi
$67,418
Median Income
$184,000
Median Home Value
St. John the Baptist Parish covers 214 sq mi of land at 192.8 people per square mile.
About St. John the Baptist Parish, LA
St. John the Baptist Parish is distinguished by its share of foreign-born residents, 10.8% of the population. With 41,342 residents, St. John the Baptist Parish is a county in Louisiana. It ranks #27 among counties in Louisiana by population.
The typical household here earns about $67,418, below the US median of $78,538. The poverty rate is 8.2%, below the national 12.4%. Median home value is $184,000, with typical rent around $1,118.
Degree attainment is mid-range for US counties: 18.7% of adults hold a four-year degree, below the national 35.0%. Most workers commute: only 5.6% work from home, below the national 14.0%, and the average commute runs about 30 minutes each way.
St. John the Baptist Parish Population History (2010-2024)
The county of St. John the Baptist Parish had a population of 45,588 in 2010 and 39,694 in 2024, a -12.9% growth over 14 years. The peak was 45,588 in 2010. Average annual growth rate: -0.97%.
39,694
Population (2024)
45,588
Population (2010)
45,588
Peak (2010)
-0.97%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 45,588 |
| 2011 | 45,065 |
| 2012 | 44,716 |
| 2013 | 43,565 |
| 2014 | 43,712 |
| 2015 | 43,527 |
| 2016 | 43,441 |
| 2017 | 43,356 |
| 2018 | 43,140 |
| 2019 | 42,824 |
| 2020 | 42,359 |
| 2021 | 42,107 |
| 2022 | 39,938 |
| 2023 | 39,615 |
| 2024 | 39,694 |
Race & Ethnicity
| White | 32.3% |
| Black or African American | 56.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.9% |
| Two or More Races | 0.0% |
Age & Sex
38.5
Median Age
50.6%
Female
49.4%
Male
15.0%
Age 65+
Age Distribution
Children (under 15): 19.2% · Seniors (65+): 15.0%
Income & Poverty
| Median household income | $67,418+$7,395 vs state |
| Mean household income | $82,408 |
| Per-capita income | $30,337 |
| Poverty rate | 8.2%-6.0% vs state |
| Unemployment rate | 5.6% |
| Employment-to-population | 55.8% |
Top Industries by Employment
The largest employment sector in St. John the Baptist Parish is professional & business services, accounting for 27.0% of workers.
How residents commute
0.2%
Drive alone
0.4%
Carpool
84.7%
Public transit
5.6%
Work from home
29.5 min
Avg commute
Housing
$184,000$-24,700 vs state
Median home value
$1,118
Median rent
79.7%
Homeownership rate
17,790
Total housing units
83.9%
Occupied
16.1%
Vacant
20.3%
Renter-occupied
Social & access
93.0%
With health insurance
93.8%
With broadband internet
10.8%
Foreign-born
6.5%
Veterans (18+)
15.2%
With a disability
92.0%
Speak language other than English at home
Education
86.7%
High School+
18.7%
Bachelor's+
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County rankings
Frequently Asked Questions
St. John the Baptist Parish, Louisiana has a population of 41,342 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 27th-largest county in Louisiana. Population density is 193 people per square mile.
The population of St. John the Baptist Parish has declined 12.9% since 2010 (45,588 → 39,694), a -0.98% annualized rate.
The median household income in St. John the Baptist Parish, Louisiana is $67,418, with mean (average) household income of $82,408 and per-capita income of $30,337. 8.2% of residents live below the federal poverty level.
In St. John the Baptist Parish, the largest racial and ethnic groups are Black or African American (56.2%), White (32.3%), Hispanic or Latino (0.9%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in St. John the Baptist Parish, Louisiana is 38.5 years. Residents are 50.6% female and 49.4% male.
The median home value in St. John the Baptist Parish is $184,000 and median monthly rent is $1,118. 79.7% of occupied housing units are owner-occupied. The county has 17,790 total housing units, 16.1% of which are vacant.
The largest employment sector in St. John the Baptist Parish, Louisiana is professional, scientific, and management services, employing 27.0% of workers. The unemployment rate is 5.6%.
New Orleans is among the largest cities associated with St. John the Baptist Parish, Louisiana, with a population of 376,035.
St. John the Baptist Parish, LA Climate
St. John the Baptist Parish, LA has an average annual temperature of 19.8°C (68°F) and receives about 1610 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
19.8°C
Avg Temp
1610
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 11° / 52° | 137 mm |
| February | 13° / 55° | 145 mm |
| March | 16° / 61° | 139 mm |
| April | 20° / 67° | 119 mm |
| May | 23° / 74° | 128 mm |
| June | 27° / 80° | 139 mm |
| July | 28° / 82° | 168 mm |
| August | 27° / 81° | 155 mm |
| September | 26° / 78° | 145 mm |
| October | 20° / 69° | 85 mm |
| November | 16° / 60° | 115 mm |
| December | 12° / 54° | 135 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit St. John the Baptist Parish, LA
The most comfortable months to visit St. John the Baptist Parish, LA are typically October, April and May, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 33°C high). The coldest is January (near 6°C low). July is usually the wettest month.
Where to stay near St. John the Baptist Parish
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.