Argyle, TX has a population of 3,732 and is the 7,758th largest city in the United States. The population density is 328 per sq mi which is 239% higher than the Texas average and 262% higher than the national average. The median age in Argyle is 47 which is approximately 36% higher than the Texas average of 34. In Argyle, 78% of the population over 15 years of age are married, 92% speak English and 5% speak Spanish. 49% of Argyle residents were born in Texas, 43% were born out of state, 1% were born outside of the United States and 7% were foreign born.