Matfield Green, KS has a population of 35 and is the 28,489th largest city in the United States. The population density is 247 per sq mi which is 603% higher than the Kansas average and 172% higher than the national average. The median age in Matfield Green is 57 which is approximately 56% higher than the Kansas average of 36. In Matfield Green, 52% of the population over 15 years of age are married, 82% speak English and 0% speak Spanish. 69% of Matfield Green residents were born in Kansas, 14% were born out of state, 0% were born outside of the United States and 17% were foreign born.