Weslaco is a city located in Hidalgo County Texas. With a 2020 population of 42,481, it is the 81st largest city in Texas and the 921st largest city in the United States . Weslaco is currently growing at a rate of 1.01% annually and its population has increased by 19.09% since the most recent census, which recorded a population of 35,670 in 2010. Weslaco reached it's highest population of 42,481 in 2021. Spanning over 18 miles, Weslaco has a population density of 2,415 people per square mile.
The average household income in Weslaco is $59,776 with a poverty rate of 24.38%. The median rental costs in recent years comes to $709 per month, and the median house value is $83,900. The median age in Weslaco is 29.3 years, 26.7 years for males, and 33.4 years for females.