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The total population of Seneca is estimated to be 30 with 18 males (60.00%) and 12 females (40.00%). There are 6 less females than males in Seneca.
The median age in Seneca, NE is 69.5, as per 2021 ACS 5-Year Estimates. Of the total population, 0.00% were under the age of 15, 29.03% aged 15 to 29, 9.68% aged 30 to 64, 61.29% aged 65 to 84, and 0.00% were 85 years of age and older.
Racial distribution of Seneca population: 90.32% are White and 9.68% are American Indian and Alaska Native.