Sinton is a city located in San Patricio County Texas. It is also the county seat of San Patricio County. With a 2020 population of 5,250, it is the 353rd largest city in Texas and the 4639th largest city in the United States . Sinton is currently declining at a rate of -0.98% annually and its population has decreased by -7.33% since the most recent census, which recorded a population of 5,665 in 2010. Sinton reached it's highest population of 6,044 in 1980. Spanning over 3 miles, Sinton has a population density of 1,772 people per square mile.
The average household income in Sinton is $48,521 with a poverty rate of 35.45%. The median rental costs in recent years comes to $583 per month, and the median house value is $50,200. The median age in Sinton is 28.8 years, 25.8 years for males, and 30.7 years for females.