Salix, PA has a population of 1,385 and is the 13,157th largest city in the United States. The population density is 1,429 per sq mi which is 416% higher than the Pennsylvania average and 1477% higher than the national average. The median age in Salix is 43 which is approximately 5% higher than the Pennsylvania average of 41. In Salix, 63% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 91% of Salix residents were born in Pennsylvania, 7% were born out of state, 1% were born outside of the United States and 1% were foreign born.