Grafton, WI Demographics

A map of Grafton's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	11,143	10,812	89.5%	89.4%
Hispanic	433	372	3.5%	3.1%
Multiracial	417	336	3.4%	2.8%
Black	315	119	2.5%	1.0%
Asian	137	389	1.1%	3.2%
Native American/Other	0	66	0.0%	0.5%

Grafton, Wisconsin has an estimated population of 12,445, a slight increase from the 12,094 recorded in the 2020 Census. The population is 89.5% White, 3.5% Hispanic, 3.4% Multiracial, 2.5% Black, 1.1% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Grafton, with one dot drawn for each person counted by the Census, color-coded by race.

Grafton is about as racially diverse as it was in 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 Grafton, that probability was 19.8% in 2020 and 19.5% in the most recent ACS estimates.

Grafton is ranked the 79th 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). Grafton was ranked the 78th most populous place in the 2020 Census.

Grafton's White Population

11,143 residents of Grafton, or 89.5% of the population, identify as White. The share of White residents in Grafton is considerably higher than in Wisconsin overall, where 78.6% of the population is White. Grafton ranks 490th statewide in terms of White residents as a share of the population, out of 808 places.

Since the 2020 Census, Grafton's White population has grown by an estimated 3.1%. White residents' share of Grafton's population has remained roughly unchanged at 89.5%.

Grafton is more White than neighboring Saukville (88.6% White), Thiensville (82.9% White), and Mequon (84.6% White). Grafton is less White than neighboring Cedarburg (90.7% White), and Port Washington (91.7% White).

Grafton's Black Population

315 residents of Grafton, or 2.5% of the population, identify as Black. The share of Black residents in Grafton is slightly lower than in Wisconsin overall, where 5.9% of the population is Black. Grafton ranks 204th statewide in terms of Black residents as a share of the population, out of 808 places.

Since the 2020 Census, Grafton's Black population has grown by an estimated 164.7%. Black residents' share of Grafton's population has increased from 1.0% to 2.5%.

Grafton is more Black than neighboring Cedarburg (0.3% Black), Thiensville (0% Black), and Port Washington (1.5% Black). Grafton is less Black than neighboring Saukville (2.9% Black).

Grafton's Asian Population

137 residents of Grafton, or 1.1% of the population, identify as Asian. The share of Asian residents in Grafton is comparable to the share in Wisconsin overall, where 2.9% of the population is Asian. Grafton ranks 60th statewide in terms of Asian residents as a share of the population, out of 808 places.

Since the 2020 Census, Grafton's Asian population has declined by an estimated 64.8%. Asian residents' share of Grafton's population has decreased from 3.2% to 1.1%.

Grafton is more Asian than neighboring Port Washington (0.8% Asian). Grafton is less Asian than neighboring Cedarburg (1.6% Asian), Saukville (1.7% Asian), Thiensville (5.8% Asian), and Mequon (4.4% Asian).

Grafton's Hispanic Population

433 residents of Grafton, or 3.5% of the population, identify as Hispanic. The share of Hispanic residents in Grafton is slightly lower than in Wisconsin overall, where 8% of the population is Hispanic. Grafton ranks 396th statewide in terms of Hispanic residents as a share of the population, out of 808 places.

Since the 2020 Census, Grafton's Hispanic population has grown by an estimated 16.4%. Hispanic residents' share of Grafton's population has remained roughly unchanged at 3.5%.

Grafton is more Hispanic than neighboring Port Washington (2.1% Hispanic). Grafton is less Hispanic than neighboring Cedarburg (4.3% Hispanic), Saukville (4.5% Hispanic), Thiensville (5% Hispanic), and Mequon (4.3% Hispanic).

Grafton's Native American/Other Population

0 residents of Grafton, 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 Grafton is comparable to the share in Wisconsin overall, where 0.9% of the population is Native American/Other. Grafton ranks 437th statewide in terms of Native American/Other residents as a share of the population, out of 808 places.

Since the 2020 Census, Grafton's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Grafton's population has decreased from 0.5% to 0.0%.

Grafton is less Native American/Other than neighboring Cedarburg (0.1% Native American/Other), Thiensville (1.7% Native American/Other), Port Washington (1% Native American/Other), and Mequon (0.5% Native American/Other).

Grafton's Multiracial Population

417 residents of Grafton, or 3.4% of the population, identify as Multiracial. The share of Multiracial residents in Grafton is comparable to the share in Wisconsin overall, where 3.7% of the population is Multiracial. Grafton ranks 497th statewide in terms of Multiracial residents as a share of the population, out of 808 places.

Since the 2020 Census, Grafton's Multiracial population has grown by an estimated 24.1%. Multiracial residents' share of Grafton's population has increased from 2.8% to 3.4%.

Grafton is more Multiracial than neighboring Cedarburg (3% Multiracial), Saukville (2.3% Multiracial), and Port Washington (2.9% Multiracial). Grafton is less Multiracial than neighboring Thiensville (4.6% Multiracial), and Mequon (3.6% 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.