St. Joseph is a city located in Louisiana. With a 2020 population of 969, it is the 172nd largest city in Louisiana and the 10451st largest city in the United States. St. Joseph is currently declining at a rate of -1.52% annually and its population has decreased by -17.60% since the most recent census, which recorded a population of 1,176 in 2010. St. Joseph reached it's highest population of 1,171 in 2010. Spanning over 1 miles, St. Joseph has a population density of 1,088 people per square mile.
The average household income in St. Joseph is $23,498 with a poverty rate of 42.04%. The median rental costs in recent years comes to $449 per month, and the median house value is $35,200. The median age in St. Joseph is 42.4 years, 25.5 years for males, and 54 years for females. For every 100 females there are 80.9 males.