Minidoka County Demographics

A map of Minidoka County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	13,055	12,946	58.8%	59.9%
Hispanic	8,227	7,909	37.0%	36.6%
Multiracial	521	521	2.3%	2.4%
Native American/Other	328	159	1.5%	0.7%
Asian	55	51	0.2%	0.2%
Black	22	27	0.1%	0.1%

Minidoka County, Idaho has an estimated population of 22,208, a slight increase from the 21,613 recorded in the 2020 Census. The population is 58.8% White, 37.0% Hispanic, 2.3% Multiracial, 1.5% Native American/Other, 0.2% Asian, and 0.1% Black. This demographic dot map shows the population of Minidoka County, with one dot drawn for each person counted by the Census, color-coded by race.

Minidoka has become slightly more racially diverse since the 2020 Census. It is considerably more diverse than Idaho overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Minidoka County, that probability was 50.7% in 2020 and 51.6% in the most recent ACS estimates.

Minidoka County is ranked the 18th most populous county in Idaho, out of 44 counties. Minidoka County was ranked the 18th most populous county in the 2020 Census.

Minidoka County's White Population

13,055 residents of Minidoka County, or 58.8% of the population, identify as White. The share of White residents in Minidoka County is significantly lower than in Idaho overall, where 78.6% of the population is White. Minidoka County ranks 42nd statewide in terms of White residents as a share of the population, out of 44 counties.

Since the 2020 Census, Minidoka County's White population has remained roughly the same. White residents' share of Minidoka County's population has decreased from 59.9% to 58.8%.

Minidoka County is more White than neighboring Jerome County (56.8% White). Minidoka County is less White than neighboring Lincoln County (62.2% White), Cassia County (64.4% White), Blaine County (71.9% White), and Power County (60.5% White).

Minidoka County's Black Population

22 residents of Minidoka County, or 0.1% of the population, identify as Black. The share of Black residents in Minidoka County is comparable to the share in Idaho overall, where 0.7% of the population is Black. Minidoka County ranks 36th statewide in terms of Black residents as a share of the population, out of 44 counties.

Since the 2020 Census, Minidoka County's Black population has declined by an estimated 18.5%. Black residents' share of Minidoka County's population has remained roughly unchanged at 0.1%.

Minidoka County is less Black than neighboring Lincoln County (0.6% Black), Cassia County (0.5% Black), Blaine County (0.3% Black), and Power County (0.4% Black).

Minidoka County's Asian Population

55 residents of Minidoka County, or 0.2% of the population, identify as Asian. The share of Asian residents in Minidoka County is comparable to the share in Idaho overall, where 1.3% of the population is Asian. Minidoka County ranks 35th statewide in terms of Asian residents as a share of the population, out of 44 counties.

Since the 2020 Census, Minidoka County's Asian population has grown by an estimated 7.8%. Asian residents' share of Minidoka County's population has remained roughly unchanged at 0.2%.

Minidoka County is more Asian than neighboring Jerome County (0% Asian), and Power County (0% Asian). Minidoka County is less Asian than neighboring Lincoln County (0.3% Asian), Cassia County (0.3% Asian), and Blaine County (0.6% Asian).

Minidoka County's Hispanic Population

8,227 residents of Minidoka County, or 37.0% of the population, identify as Hispanic. The share of Hispanic residents in Minidoka County is significantly higher than in Idaho overall, where 13.6% of the population is Hispanic. Minidoka County ranks 2nd statewide in terms of Hispanic residents as a share of the population, out of 44 counties.

Since the 2020 Census, Minidoka County's Hispanic population has grown by an estimated 4.0%. Hispanic residents' share of Minidoka County's population has remained roughly unchanged at 37.0%.

Minidoka County is more Hispanic than neighboring Lincoln County (32.4% Hispanic), Cassia County (30.1% Hispanic), Blaine County (21.8% Hispanic), and Power County (34.3% Hispanic). Minidoka County is less Hispanic than neighboring Jerome County (39.2% Hispanic).

Minidoka County's Native American/Other Population

328 residents of Minidoka County, or 1.5% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Minidoka County is comparable to the share in Idaho overall, where 1.5% of the population is Native American/Other. Minidoka County ranks 36th statewide in terms of Native American/Other residents as a share of the population, out of 44 counties.

Since the 2020 Census, Minidoka County's Native American/Other population has grown by an estimated 106.3%. Native American/Other residents' share of Minidoka County's population has increased from 0.7% to 1.5%.

Minidoka County is more Native American/Other than neighboring Lincoln County (0.6% Native American/Other), Jerome County (0.2% Native American/Other), Blaine County (0.5% Native American/Other), and Power County (0.9% Native American/Other). Minidoka County is less Native American/Other than neighboring Cassia County (1.6% Native American/Other).

Minidoka County's Multiracial Population

521 residents of Minidoka County, or 2.3% of the population, identify as Multiracial. The share of Multiracial residents in Minidoka County is comparable to the share in Idaho overall, where 4.2% of the population is Multiracial. Minidoka County ranks 38th statewide in terms of Multiracial residents as a share of the population, out of 44 counties.

Since the 2020 Census, Minidoka County's Multiracial population has remained roughly the same. Multiracial residents' share of Minidoka County's population has remained roughly unchanged at 2.3%.

Minidoka County is less Multiracial than neighboring Lincoln County (3.9% Multiracial), Cassia County (3.3% Multiracial), Jerome County (3.6% Multiracial), Blaine County (4.8% Multiracial), and Power County (3.9% 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.