Rule, TX has a population of 542 and is the 19,078th largest city in the United States. The population density is 778 per sq mi which is 703% higher than the Texas average and 759% higher than the national average. The median age in Rule is 46 which is approximately 34% higher than the Texas average of 34. In Rule, 71% of the population over 15 years of age are married, 78% speak English and 22% speak Spanish. 82% of Rule residents were born in Texas, 13% were born out of state, 0% were born outside of the United States and 5% were foreign born.