Big Rock, IA Demographics

A map of Big Rock's Population by Race

Big Rock, Iowa has an estimated population of 6, a dramatic decrease from the 49 recorded in the 2020 Census. The population is 100.0% White, 0.0% Black, 0.0% Asian, 0.0% Hispanic, 0.0% Native American/Other, and 0.0% Multiracial. This demographic dot map shows the population of Big Rock, with one dot drawn for each person counted by the Census, color-coded by race.

Big Rock has become considerably less racially diverse since the 2020 Census. It is considerably less diverse than Iowa overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Big Rock, that probability was 32.1% in 2020 and 0.0% in the most recent ACS estimates.

Big Rock is ranked the 1014th most populous place in Iowa, out of 1,026 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). Big Rock was ranked the 959th most populous place in the 2020 Census.

Big Rock's White Population

6 residents of Big Rock, or 100.0% of the population, identify as White. The share of White residents in Big Rock is significantly higher than in Iowa overall, where 82.3% of the population is White. Big Rock ranks 947th statewide in terms of White residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Big Rock's White population has declined by an estimated 85.0%. White residents' share of Big Rock's population has increased from 81.6% to 100.0%.

Big Rock is more White than neighboring Dixon (91.1% White), Wheatland (92.5% White), New Liberty (94.3% White), Calamus (93.5% White), and Plainview (0% White).

Big Rock's Black Population

0 residents of Big Rock, or 0.0% of the population, identify as Black. The share of Black residents in Big Rock is slightly lower than in Iowa overall, where 3.8% of the population is Black. Big Rock ranks 600th statewide in terms of Black residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Big Rock's Black population has grown from 0 to an estimated 0. Black residents' share of Big Rock's population has remained roughly unchanged at 0.0%.

Big Rock is less Black than neighboring Wheatland (0.5% Black).

Big Rock's Asian Population

0 residents of Big Rock, or 0.0% of the population, identify as Asian. The share of Asian residents in Big Rock is slightly lower than in Iowa overall, where 2.5% of the population is Asian. Big Rock ranks 60th statewide in terms of Asian residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Big Rock's Asian population has declined by an estimated 100.0%. Asian residents' share of Big Rock's population has decreased from 2.0% to 0.0%.

Big Rock's Hispanic Population

0 residents of Big Rock, or 0.0% of the population, identify as Hispanic. The share of Hispanic residents in Big Rock is lower than in Iowa overall, where 7.3% of the population is Hispanic. Big Rock ranks 286th statewide in terms of Hispanic residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Big Rock's Hispanic population has declined by an estimated 100.0%. Hispanic residents' share of Big Rock's population has decreased from 4.1% to 0.0%.

Big Rock is less Hispanic than neighboring Dixon (1.6% Hispanic), Wheatland (5.7% Hispanic), New Liberty (2.1% Hispanic), and Calamus (0.7% Hispanic).

Big Rock's Native American/Other Population

0 residents of Big Rock, 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 Big Rock is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Big Rock ranks 58th statewide in terms of Native American/Other residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Big Rock's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Big Rock's population has decreased from 2.0% to 0.0%.

Big Rock is less Native American/Other than neighboring Wheatland (0.2% Native American/Other), and Calamus (0.2% Native American/Other).

Big Rock's Multiracial Population

0 residents of Big Rock, or 0.0% of the population, identify as Multiracial. The share of Multiracial residents in Big Rock is slightly lower than in Iowa overall, where 3.5% of the population is Multiracial. Big Rock ranks 15th statewide in terms of Multiracial residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Big Rock's Multiracial population has declined by an estimated 100.0%. Multiracial residents' share of Big Rock's population has decreased from 10.2% to 0.0%.

Big Rock is less Multiracial than neighboring Dixon (7.4% Multiracial), Wheatland (1% Multiracial), New Liberty (3.5% Multiracial), and Calamus (5.5% 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.