Seneca, WI Demographics

A map of Seneca's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	351	223	94.4%	98.7%
Hispanic	10	0	2.7%	0.0%
Asian	9	1	2.4%	0.4%
Multiracial	2	1	0.5%	0.4%
Black	0	0	0.0%	0.0%
Native American/Other	0	1	0.0%	0.4%

Seneca, Wisconsin has an estimated population of 372, a dramatic increase from the 226 recorded in the 2020 Census. The population is 94.4% White, 2.7% Hispanic, 2.4% Asian, 0.5% Multiracial, 0.0% Black, and 0.0% Native American/Other. This demographic dot map shows the population of Seneca, with one dot drawn for each person counted by the Census, color-coded by race.

Seneca has become considerably more racially diverse since the 2020 Census. It is considerably less diverse than Wisconsin overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Seneca, that probability was 2.6% in 2020 and 10.8% in the most recent ACS estimates.

Seneca is ranked the 589th most populous place in Wisconsin, out of 808 places. 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 was ranked the 676th most populous place in the 2020 Census.

Seneca's White Population

351 residents of Seneca, or 94.4% of the population, identify as White. The share of White residents in Seneca is significantly higher than in Wisconsin overall, where 78.6% of the population is White. Seneca ranks 8th statewide in terms of White residents as a share of the population, out of 808 places.

Since the 2020 Census, Seneca's White population has grown by an estimated 57.4%. White residents' share of Seneca's population has decreased from 98.7% to 94.4%.

Seneca is more White than neighboring Gays Mills (89.5% White). Seneca is less White than neighboring Mount Sterling (94.5% White), Lynxville (97.1% White), Eastman (97.7% White), and Steuben (98.6% White).

Seneca's Black Population

0 residents of Seneca, or 0.0% of the population, identify as Black. The share of Black residents in Seneca is lower than in Wisconsin overall, where 5.9% of the population is Black. Seneca ranks 606th statewide in terms of Black residents as a share of the population, out of 808 places.

Since the 2020 Census, Seneca's Black population has grown from 0 to an estimated 0. Black residents' share of Seneca's population has remained roughly unchanged at 0.0%.

Seneca's Asian Population

9 residents of Seneca, or 2.4% of the population, identify as Asian. The share of Asian residents in Seneca is comparable to the share in Wisconsin overall, where 2.9% of the population is Asian. Seneca ranks 410th statewide in terms of Asian residents as a share of the population, out of 808 places.

Since the 2020 Census, Seneca's Asian population has grown by an estimated 800.0%. Asian residents' share of Seneca's population has increased from 0.4% to 2.4%.

Seneca is more Asian than neighboring Mount Sterling (0% Asian), Lynxville (0% Asian), Gays Mills (0% Asian), Eastman (0% Asian), and Steuben (0% Asian).

Seneca's Hispanic Population

10 residents of Seneca, or 2.7% of the population, identify as Hispanic. The share of Hispanic residents in Seneca is lower than in Wisconsin overall, where 8% of the population is Hispanic. Seneca ranks 764th statewide in terms of Hispanic residents as a share of the population, out of 808 places.

Since the 2020 Census, Seneca's Hispanic population has grown from 0 to an estimated 10. Hispanic residents' share of Seneca's population has increased from 0.0% to 2.7%.

Seneca is more Hispanic than neighboring Mount Sterling (0% Hispanic), Lynxville (0% Hispanic), Eastman (0% Hispanic), and Steuben (0% Hispanic). Seneca is less Hispanic than neighboring Gays Mills (4.2% Hispanic).

Seneca's Native American/Other Population

0 residents of Seneca, or 0.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Seneca is comparable to the share in Wisconsin overall, where 0.9% of the population is Native American/Other. Seneca ranks 513th statewide in terms of Native American/Other residents as a share of the population, out of 808 places.

Since the 2020 Census, Seneca's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Seneca's population has remained roughly unchanged at 0.0%.

Seneca is less Native American/Other than neighboring Gays Mills (0.2% Native American/Other), and Eastman (0.3% Native American/Other).

Seneca's Multiracial Population

2 residents of Seneca, or 0.5% of the population, identify as Multiracial. The share of Multiracial residents in Seneca is slightly lower than in Wisconsin overall, where 3.7% of the population is Multiracial. Seneca ranks 786th statewide in terms of Multiracial residents as a share of the population, out of 808 places.

Since the 2020 Census, Seneca's Multiracial population has grown by an estimated 100.0%. Multiracial residents' share of Seneca's population has remained roughly unchanged at 0.5%.

Seneca is less Multiracial than neighboring Mount Sterling (5.5% Multiracial), Lynxville (2.9% Multiracial), Gays Mills (6.1% Multiracial), Eastman (2% Multiracial), and Steuben (1.4% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.