Westphalia, KS has a population of 219 and is the 24,046th largest city in the United States. The population density is 1,103 per sq mi which is 3045% higher than the Kansas average and 1118% higher than the national average. The median age in Westphalia is 30 which is approximately 17% lower than the Kansas average of 36. In Westphalia, 54% of the population over 15 years of age are married, 95% speak English and 4% speak Spanish. 70% of Westphalia residents were born in Kansas, 23% were born out of state, 3% were born outside of the United States and 4% were foreign born.