Sullivan, WI Demographics

A map of Sullivan's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	633	611	95.5%	93.9%
Multiracial	19	17	2.9%	2.6%
Hispanic	6	12	0.9%	1.8%
Native American/Other	4	5	0.6%	0.8%
Asian	1	1	0.2%	0.2%
Black	0	5	0.0%	0.8%

Sullivan, Wisconsin has an estimated population of 663, a slight increase from the 651 recorded in the 2020 Census. The population is 95.5% White, 2.9% Multiracial, 0.9% Hispanic, 0.6% Native American/Other, 0.2% Asian, and 0.0% Black. This demographic dot map shows the population of Sullivan, with one dot drawn for each person counted by the Census, color-coded by race.

Sullivan has become less 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 Sullivan, that probability was 11.8% in 2020 and 8.8% in the most recent ACS estimates.

Sullivan is ranked the 474th 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). Sullivan was ranked the 473rd most populous place in the 2020 Census.

Sullivan's White Population

633 residents of Sullivan, or 95.5% of the population, identify as White. The share of White residents in Sullivan is significantly higher than in Wisconsin overall, where 78.6% of the population is White. Sullivan ranks 196th statewide in terms of White residents as a share of the population, out of 808 places.

Since the 2020 Census, Sullivan's White population has grown by an estimated 3.6%. White residents' share of Sullivan's population has increased from 93.9% to 95.5%.

Sullivan is more White than neighboring Rome (93.9% White), Summit (90.4% White), and Ixonia (95.1% White). Sullivan is less White than neighboring Helenville (100% White).

Sullivan's Black Population

0 residents of Sullivan, or 0.0% of the population, identify as Black. The share of Black residents in Sullivan is lower than in Wisconsin overall, where 5.9% of the population is Black. Sullivan ranks 271st statewide in terms of Black residents as a share of the population, out of 808 places.

Since the 2020 Census, Sullivan's Black population has declined by an estimated 100.0%. Black residents' share of Sullivan's population has decreased from 0.8% to 0.0%.

Sullivan is less Black than neighboring Dousman (0.1% Black), Summit (0.2% Black), and Ixonia (2.2% Black).

Sullivan's Asian Population

1 residents of Sullivan, or 0.2% of the population, identify as Asian. The share of Asian residents in Sullivan is slightly lower than in Wisconsin overall, where 2.9% of the population is Asian. Sullivan ranks 560th statewide in terms of Asian residents as a share of the population, out of 808 places.

Since the 2020 Census, Sullivan's Asian population has remained roughly the same. Asian residents' share of Sullivan's population has remained roughly unchanged at 0.2%.

Sullivan is more Asian than neighboring Rome (0% Asian), Helenville (0% Asian), and Dousman (0% Asian). Sullivan is less Asian than neighboring Summit (0.7% Asian), and Ixonia (0.6% Asian).

Sullivan's Hispanic Population

6 residents of Sullivan, or 0.9% of the population, identify as Hispanic. The share of Hispanic residents in Sullivan is lower than in Wisconsin overall, where 8% of the population is Hispanic. Sullivan ranks 587th statewide in terms of Hispanic residents as a share of the population, out of 808 places.

Since the 2020 Census, Sullivan's Hispanic population has declined by an estimated 50.0%. Hispanic residents' share of Sullivan's population has decreased from 1.8% to 0.9%.

Sullivan is more Hispanic than neighboring Helenville (0% Hispanic). Sullivan is less Hispanic than neighboring Rome (1.9% Hispanic), Dousman (1.9% Hispanic), Summit (2.7% Hispanic), and Ixonia (1.3% Hispanic).

Sullivan's Native American/Other Population

4 residents of Sullivan, or 0.6% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Sullivan is comparable to the share in Wisconsin overall, where 0.9% of the population is Native American/Other. Sullivan ranks 320th statewide in terms of Native American/Other residents as a share of the population, out of 808 places.

Since the 2020 Census, Sullivan's Native American/Other population has declined by an estimated 20.0%. Native American/Other residents' share of Sullivan's population has remained roughly unchanged at 0.6%.

Sullivan is more Native American/Other than neighboring Rome (0% Native American/Other), Helenville (0% Native American/Other), Dousman (0.2% Native American/Other), and Ixonia (0% Native American/Other). Sullivan is less Native American/Other than neighboring Summit (0.8% Native American/Other).

Sullivan's Multiracial Population

19 residents of Sullivan, or 2.9% of the population, identify as Multiracial. The share of Multiracial residents in Sullivan is comparable to the share in Wisconsin overall, where 3.7% of the population is Multiracial. Sullivan ranks 540th statewide in terms of Multiracial residents as a share of the population, out of 808 places.

Since the 2020 Census, Sullivan's Multiracial population has grown by an estimated 11.8%. Multiracial residents' share of Sullivan's population has remained roughly unchanged at 2.9%.

Sullivan is more Multiracial than neighboring Helenville (0% Multiracial), Dousman (2.3% Multiracial), and Ixonia (0.8% Multiracial). Sullivan is less Multiracial than neighboring Rome (4.2% Multiracial), and Summit (5.2% 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.