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The total population of Seneca is estimated to be 2,565 with 1,331 males (51.89%) and 1,234 females (48.11%). There are 97 less females than males in Seneca.
The median household income in Seneca was $92,195 in 2021, which marked an an increase of 7,315(8.62%) from $84,880 in 2020. This income is 123.58% of the U.S. median household income of $74,606 (all incomes in 2022 inflation-adjusted dollars).
Per the latest American Community Survey by the Census Bureau, Seneca sees its highest median household income among householders in the age group of 45 to 64 years old, at $111,039. Overall, the median household income for the village of Seneca stands at $92,195.
In Seneca, the median income for all workers aged 15 years and older, regardless of work hours, was $65,781 for males and $27,222 for females. However, when specifically considering full-time, year-round workers within the same age group, the median income was $83,500 for males and $46,743 for females.
In Seneca, population is primarily represented by White households, reporting a median income of $88,881.
In 2022, the population of Seneca was 2,308, a 1.11% decrease year-by-year from 2021. Previously, in 2021, Seneca's population was 2,334, a decline of 0.34% compared to a population of 2,342 in 2020.
The median age in Seneca, IL is 32.8, as per 2021 ACS 5-Year Estimates. Of the total population, 23.34% were under the age of 15, 23.34% aged 15 to 29, 42.37% aged 30 to 64, 9.63% aged 65 to 84, and 1.32% were 85 years of age and older.
Racial distribution of Seneca population: 91.54% are White, 1.40% are Black or African American, 1.81% are some other race and 5.25% are multiracial.