Rock City, IL Demographics

A map of Rock City's Population by Race

Rock City, Illinois has an estimated population of 441, a dramatic increase from the 293 recorded in the 2020 Census. The population is 64.2% White, 33.1% Hispanic, 2.7% Multiracial, 0.0% Black, 0.0% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Rock City, with one dot drawn for each person counted by the Census, color-coded by race.

Rock City has become considerably more racially diverse since the 2020 Census. It is considerably less diverse than Illinois overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Rock City, that probability was 11.7% in 2020 and 47.8% in the most recent ACS estimates.

Rock City is ranked the 974th most populous place in Illinois, out of 1,461 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). Rock City was ranked the 1084th most populous place in the 2020 Census.

Rock City's White Population

283 residents of Rock City, or 64.2% of the population, identify as White. The share of White residents in Rock City is higher than in Illinois overall, where 58.1% of the population is White. Rock City ranks 349th statewide in terms of White residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Rock City's White population has grown by an estimated 2.9%. White residents' share of Rock City's population has decreased from 93.9% to 64.2%.

Rock City is less White than neighboring Davis (90.3% White), Dakota (88.7% White), Lake Summerset (93.2% White), Ridott (95.4% White), and Durand (87.7% White).

Rock City's Black Population

0 residents of Rock City, or 0.0% of the population, identify as Black. The share of Black residents in Rock City is considerably lower than in Illinois overall, where 13.3% of the population is Black. Rock City ranks 951st statewide in terms of Black residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Rock City's Black population has declined by an estimated 100.0%. Black residents' share of Rock City's population has remained roughly unchanged at 0.0%.

Rock City is less Black than neighboring Lake Summerset (1% Black), and Durand (0.8% Black).

Rock City's Asian Population

0 residents of Rock City, or 0.0% of the population, identify as Asian. The share of Asian residents in Rock City is lower than in Illinois overall, where 5.9% of the population is Asian. Rock City ranks 1029th statewide in terms of Asian residents as a share of the population, out of 1,461 places.

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

Rock City is less Asian than neighboring Dakota (0.8% Asian), Lake Summerset (0.3% Asian), Ridott (2.3% Asian), and Durand (1.7% Asian).

Rock City's Hispanic Population

146 residents of Rock City, or 33.1% of the population, identify as Hispanic. The share of Hispanic residents in Rock City is considerably higher than in Illinois overall, where 18.8% of the population is Hispanic. Rock City ranks 1052nd statewide in terms of Hispanic residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Rock City's Hispanic population has grown by an estimated 2820.0%. Hispanic residents' share of Rock City's population has increased from 1.7% to 33.1%.

Rock City is more Hispanic than neighboring Davis (3.7% Hispanic), Dakota (3.6% Hispanic), Lake Summerset (4.9% Hispanic), Ridott (0% Hispanic), and Durand (3.7% Hispanic).

Rock City's Native American/Other Population

0 residents of Rock City, 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 Rock City is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Rock City ranks 818th statewide in terms of Native American/Other residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Rock City's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Rock City's population has remained roughly unchanged at 0.0%.

Rock City is less Native American/Other than neighboring Durand (0.5% Native American/Other).

Rock City's Multiracial Population

12 residents of Rock City, or 2.7% of the population, identify as Multiracial. The share of Multiracial residents in Rock City is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Rock City ranks 619th statewide in terms of Multiracial residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Rock City's Multiracial population has grown by an estimated 9.1%. Multiracial residents' share of Rock City's population has decreased from 3.8% to 2.7%.

Rock City is more Multiracial than neighboring Lake Summerset (0.7% Multiracial), and Ridott (2.3% Multiracial). Rock City is less Multiracial than neighboring Davis (6% Multiracial), Dakota (7% Multiracial), and Durand (5.7% 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.