Population By Race and Ethnicity in Ada County, ID in 2018

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2018, the 469,161 population of Ada County, Idaho comprised of 39,348 people who identified as Hispanic (8.39%), and 429,813 people who identified as Non-Hispanic (91.61%).

Race: The White Alone population was the largest racial group in Ada County, Idaho with a population of 431,648 (92%); Two Or More Races population was the second largest racial group with a population of 13,639 (2.91%); and Asian Alone was the third largest racial group with a population of 12,926 (2.76%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Ada County, Idaho in 2018, with a population of 396,709 (84.56%); the second largest ethnic group was White Alone - Hispanic with a population of 34,939 (7.45%); and the third largest ethnic group was Asian Alone - Non Hispanic with a population of 12,591 (2.68%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in Ada, Idaho.

You can find similar information for other Idaho counties, and for Idaho.

See this for other years:
Hispanics and Non Hispanics in Ada County, ID in 2018
Total Population:
Race in Ada County, ID in 2018
Total Population:
Ethnicity in Ada County, ID in 2018
Total Population:
Population By Race in Ada , ID in 2018
Race Population Percentage
Black or African American Alone 6,121 1.31%
White Alone 431,648 92%
American Indian and Alaska Native Alone 3,762 0.8%
Asian Alone 12,926 2.76%
Native Hawaiian And Pacific Islander Alone 1,065 0.23%
Two Or More Races 13,639 2.91%
Population By Ethnicity in Ada , ID in 2018
Ethnicity Population Percentage
Black or African American Alone - Hispanic 481 0.1%
White Alone - Hispanic 34,939 7.45%
American Indian and Alaska Native Alone - Hispanic 1,459 0.31%
Asian Alone - Hispanic 335 0.07%
Native Hawaiian And Pacific Islander Alone - Hispanic 104 0.02%
Two Or More Races - Hispanic 2,030 0.43%
Black or African American Alone - Non Hispanic 5,640 1.2%
White Alone - Non Hispanic 396,709 84.56%
American Indian and Alaska Native Alone - Non Hispanic 2,303 0.49%
Asian Alone - Non Hispanic 12,591 2.68%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 961 0.21%
Two Or More Races - Non Hispanic 11,609 2.47%