Sussex, WI Demographics

A map of Sussex's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	10,070	10,081	83.5%	87.8%
Asian	965	440	8.0%	3.8%
Multiracial	559	334	4.6%	2.9%
Hispanic	231	407	1.9%	3.5%
Black	229	184	1.9%	1.6%
Native American/Other	12	41	0.1%	0.4%

Sussex, Wisconsin has an estimated population of 12,066, an increase from the 11,487 recorded in the 2020 Census. The population is 83.5% White, 8.0% Asian, 4.6% Multiracial, 1.9% Black, 1.9% Hispanic, and 0.1% Native American/Other. This demographic dot map shows the population of Sussex, with one dot drawn for each person counted by the Census, color-coded by race.

Sussex 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 Sussex, that probability was 22.6% in 2020 and 29.4% in the most recent ACS estimates.

Sussex is ranked the 80th 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). Sussex was ranked the 82nd most populous place in the 2020 Census.

Sussex's White Population

10,070 residents of Sussex, or 83.5% of the population, identify as White. The share of White residents in Sussex is slightly higher than in Wisconsin overall, where 78.6% of the population is White. Sussex ranks 568th statewide in terms of White residents as a share of the population, out of 808 places.

Since the 2020 Census, Sussex's White population has remained roughly the same. White residents' share of Sussex's population has decreased from 87.8% to 83.5%.

Sussex is more White than neighboring Menomonee Falls (82.4% White). Sussex is less White than neighboring Pewaukee (87.8% White), Lannon (88.3% White), Pewaukee (87.7% White), and Merton (92.3% White).

Sussex's Black Population

229 residents of Sussex, or 1.9% of the population, identify as Black. The share of Black residents in Sussex is slightly lower than in Wisconsin overall, where 5.9% of the population is Black. Sussex ranks 106th statewide in terms of Black residents as a share of the population, out of 808 places.

Since the 2020 Census, Sussex's Black population has grown by an estimated 24.5%. Black residents' share of Sussex's population has remained roughly unchanged at 1.9%.

Sussex is more Black than neighboring Pewaukee (0.5% Black), Lannon (0.5% Black), Pewaukee (0.3% Black), and Merton (0.3% Black). Sussex is less Black than neighboring Menomonee Falls (3.6% Black).

Sussex's Asian Population

965 residents of Sussex, or 8.0% of the population, identify as Asian. The share of Asian residents in Sussex is higher than in Wisconsin overall, where 2.9% of the population is Asian. Sussex ranks 50th statewide in terms of Asian residents as a share of the population, out of 808 places.

Since the 2020 Census, Sussex's Asian population has grown by an estimated 119.3%. Asian residents' share of Sussex's population has increased from 3.8% to 8.0%.

Sussex is more Asian than neighboring Pewaukee (2.5% Asian), Lannon (5.2% Asian), Pewaukee (4.2% Asian), Merton (2.5% Asian), and Menomonee Falls (5.6% Asian).

Sussex's Hispanic Population

231 residents of Sussex, or 1.9% of the population, identify as Hispanic. The share of Hispanic residents in Sussex is lower than in Wisconsin overall, where 8% of the population is Hispanic. Sussex ranks 337th statewide in terms of Hispanic residents as a share of the population, out of 808 places.

Since the 2020 Census, Sussex's Hispanic population has declined by an estimated 43.2%. Hispanic residents' share of Sussex's population has decreased from 3.5% to 1.9%.

Sussex is more Hispanic than neighboring Lannon (1.2% Hispanic), and Merton (1.5% Hispanic). Sussex is less Hispanic than neighboring Pewaukee (4.4% Hispanic), Pewaukee (4.1% Hispanic), and Menomonee Falls (4.8% Hispanic).

Sussex's Native American/Other Population

12 residents of Sussex, or 0.1% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Sussex is comparable to the share in Wisconsin overall, where 0.9% of the population is Native American/Other. Sussex ranks 583rd statewide in terms of Native American/Other residents as a share of the population, out of 808 places.

Since the 2020 Census, Sussex's Native American/Other population has declined by an estimated 70.7%. Native American/Other residents' share of Sussex's population has remained roughly unchanged at 0.1%.

Sussex is more Native American/Other than neighboring Pewaukee (0% Native American/Other). Sussex is less Native American/Other than neighboring Lannon (4.3% Native American/Other), and Menomonee Falls (0.8% Native American/Other).

Sussex's Multiracial Population

559 residents of Sussex, or 4.6% of the population, identify as Multiracial. The share of Multiracial residents in Sussex is comparable to the share in Wisconsin overall, where 3.7% of the population is Multiracial. Sussex ranks 462nd statewide in terms of Multiracial residents as a share of the population, out of 808 places.

Since the 2020 Census, Sussex's Multiracial population has grown by an estimated 67.4%. Multiracial residents' share of Sussex's population has increased from 2.9% to 4.6%.

Sussex is more Multiracial than neighboring Lannon (0.5% Multiracial), Pewaukee (3.6% Multiracial), Merton (3.3% Multiracial), and Menomonee Falls (2.8% Multiracial). Sussex is less Multiracial than neighboring Pewaukee (4.8% 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.