Seneca, SD Demographics

A map of Seneca's Population by Race

Seneca, South Dakota had a population of 22 in 2020. It was 90.9% White, 0.0% Black, 0.0% Asian, 9.1% Hispanic, 0.0% Native American/Other, and 0.0% Multiracial. This map presents the population of Seneca, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Of the 486 places in South Dakota, Seneca is the 432nd most populous. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs).

Seneca's White Population

20 residents of Seneca identify as White, or 90.9%. This makes the White share of the population of Seneca slightly larger than the White share of the population of South Dakota (79.6% White). Of the 486 places in South Dakota, Seneca is ranked #219 in terms of White residents as a share of the population.

Seneca is more White than neighboring Lebanon (87.9% White), and Thunderbird Colony (85.7% White). Seneca is less White than neighboring Onaka (92.3% White), Tolstoy (97.1% White), and Brentwood Colony (100% White).

Seneca's Black Population

0 residents of Seneca identify as Black, or 0.0%. This makes the Black share of the population of Seneca roughly similar to the Black share of the population of South Dakota (2% Black). Of the 486 places in South Dakota, Seneca is ranked #183 in terms of Black residents as a share of the population.

Seneca's Asian Population

0 residents of Seneca identify as Asian, or 0.0%. This makes the Asian share of the population of Seneca roughly similar to the Asian share of the population of South Dakota (1.5% Asian). Of the 486 places in South Dakota, Seneca is ranked #176 in terms of Asian residents as a share of the population.

Seneca's Hispanic Population

2 residents of Seneca identify as Hispanic, or 9.1%. This makes the Hispanic share of the population of Seneca roughly similar to the Hispanic share of the population of South Dakota (4.4% Hispanic). Of the 486 places in South Dakota, Seneca is ranked #39 in terms of Hispanic residents as a share of the population.

Seneca is more Hispanic than neighboring Onaka (7.7% Hispanic), Tolstoy (2.9% Hispanic), and Brentwood Colony (0% Hispanic). Seneca is less Hispanic than neighboring Lebanon (12.1% Hispanic), and Thunderbird Colony (14.3% Hispanic).

Seneca's Native American/Other Population

0 residents of Seneca identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.0%. This makes the Native American/Other share of the population of Seneca slightly less than the Native American/Other share of the population of South Dakota (8.7% Native American/Other). Of the 486 places in South Dakota, Seneca is ranked #345 in terms of Native American/Other residents as a share of the population.

Seneca's Multiracial Population

0 residents of Seneca identify as Multiracial, or 0.0%. This makes the Multiracial share of the population of Seneca roughly similar to the Multiracial share of the population of South Dakota (3.9% Multiracial). Of the 486 places in South Dakota, Seneca is ranked #405 in terms of Multiracial residents as a share of the population.

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.