Lavaca is located in Sebastian county Arkansas with a geographic area of 2.2 square miles. The total population in Lavaca is 2,442 with 45.9% male and 54.1% female. Children under age 5 represent 10.7% of the population, under age 18 equal 31.0% of the population and over age 65 is 7.7% of the population. The median household income is $64,250, per capita income is $24,304. There are a total of 878 housing units with 72.6% owner occupied. Education includes 27.9% of residents that are high school graduates and 25.5% with a bachelor's degree or higher. The average temperature in Lavaca in the summer is 78 degrees, and in the winter 37 degrees.
