Plymouth is located in Jefferson county Nebraska with a geographic area of 0.3 square miles. The total population in Plymouth is 424 with 54.5% male and 45.5% female. Children under age 5 represent 3.5% of the population, under age 18 equal 18.4% of the population and over age 65 is 29.5% of the population. The median household income is $45,250, per capita income is $28,939. There are a total of 217 housing units with 72.4% owner occupied. Education includes 30.4% of residents that are high school graduates and 12.9% with a bachelor's degree or higher. The average temperature in Plymouth in the summer is 72 degrees, and in the winter 26 degrees.
