Summit County Demographics

A map of Summit County's Population by Race

Summit County, Utah has an estimated population of 42,970, a slight increase from the 42,357 recorded in the 2020 Census. The population is 82.9% White, 11.4% Hispanic, 3.1% Multiracial, 1.8% Asian, 0.5% Native American/Other, and 0.3% Black. This demographic dot map shows the population of Summit County, with one dot drawn for each person counted by the Census, color-coded by race.

Summit is about as racially diverse as it was in the 2020 Census. It is considerably less diverse than Utah overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Summit County, that probability was 29.9% in 2020 and 29.8% in the most recent ACS estimates.

Summit County is ranked the 10th most populous county in Utah, out of 29 counties. Summit County was ranked the 10th most populous county in the 2020 Census.

Summit County's White Population

35,639 residents of Summit County, or 82.9% of the population, identify as White. The share of White residents in Summit County is higher than in Utah overall, where 74.7% of the population is White. Summit County ranks 15th statewide in terms of White residents as a share of the population, out of 29 counties.

Since the 2020 Census, Summit County's White population has grown by an estimated 1.5%. White residents' share of Summit County's population has remained roughly unchanged at 82.9%.

Summit County is more White than neighboring Wasatch County (80.6% White). Summit County is less White than neighboring Uinta County (85.8% White), Morgan County (92.1% White), Duchesne County (84.8% White), and Rich County (91.8% White).

Summit County's Black Population

126 residents of Summit County, or 0.3% of the population, identify as Black. The share of Black residents in Summit County is comparable to the share in Utah overall, where 1.1% of the population is Black. Summit County ranks 13th statewide in terms of Black residents as a share of the population, out of 29 counties.

Since the 2020 Census, Summit County's Black population has declined by an estimated 22.7%. Black residents' share of Summit County's population has remained roughly unchanged at 0.3%.

Summit County is more Black than neighboring Wasatch County (0.2% Black), Morgan County (0.1% Black), Duchesne County (0.1% Black), and Rich County (0% Black). Summit County is less Black than neighboring Uinta County (0.6% Black).

Summit County's Asian Population

756 residents of Summit County, or 1.8% of the population, identify as Asian. The share of Asian residents in Summit County is comparable to the share in Utah overall, where 2.4% of the population is Asian. Summit County ranks 4th statewide in terms of Asian residents as a share of the population, out of 29 counties.

Since the 2020 Census, Summit County's Asian population has grown by an estimated 4.6%. Asian residents' share of Summit County's population has remained roughly unchanged at 1.8%.

Summit County is more Asian than neighboring Wasatch County (1% Asian), Uinta County (0.2% Asian), Morgan County (0.1% Asian), Duchesne County (0.5% Asian), and Rich County (0% Asian).

Summit County's Hispanic Population

4,914 residents of Summit County, or 11.4% of the population, identify as Hispanic. The share of Hispanic residents in Summit County is slightly lower than in Utah overall, where 15.9% of the population is Hispanic. Summit County ranks 12th statewide in terms of Hispanic residents as a share of the population, out of 29 counties.

Since the 2020 Census, Summit County's Hispanic population has grown by an estimated 3.7%. Hispanic residents' share of Summit County's population has remained roughly unchanged at 11.4%.

Summit County is more Hispanic than neighboring Uinta County (10.1% Hispanic), Morgan County (2.9% Hispanic), Duchesne County (7.5% Hispanic), and Rich County (5.4% Hispanic). Summit County is less Hispanic than neighboring Wasatch County (14.7% Hispanic).

Summit County's Native American/Other Population

200 residents of Summit County, or 0.5% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Summit County is comparable to the share in Utah overall, where 1.9% of the population is Native American/Other. Summit County ranks 24th statewide in terms of Native American/Other residents as a share of the population, out of 29 counties.

Since the 2020 Census, Summit County's Native American/Other population has declined by an estimated 24.2%. Native American/Other residents' share of Summit County's population has remained roughly unchanged at 0.5%.

Summit County is more Native American/Other than neighboring Uinta County (0.2% Native American/Other). Summit County is less Native American/Other than neighboring Wasatch County (0.8% Native American/Other), Morgan County (2.3% Native American/Other), Duchesne County (4.1% Native American/Other), and Rich County (1% Native American/Other).

Summit County's Multiracial Population

1,335 residents of Summit County, or 3.1% of the population, identify as Multiracial. The share of Multiracial residents in Summit County is comparable to the share in Utah overall, where 4% of the population is Multiracial. Summit County ranks 11th statewide in terms of Multiracial residents as a share of the population, out of 29 counties.

Since the 2020 Census, Summit County's Multiracial population has declined by an estimated 2.0%. Multiracial residents' share of Summit County's population has remained roughly unchanged at 3.1%.

Summit County is more Multiracial than neighboring Wasatch County (2.7% Multiracial), Morgan County (2.4% Multiracial), Duchesne County (3% Multiracial), and Rich County (1.8% 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.