Rock Island Arsenal, IL Demographics

A map of Rock Island Arsenal's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Multiracial	238	26	50.6%	14.3%
White	181	101	38.5%	55.5%
Hispanic	36	16	7.7%	8.8%
Native American/Other	12	6	2.6%	3.3%
Black	3	24	0.6%	13.2%
Asian	0	9	0.0%	4.9%

Rock Island Arsenal, Illinois has an estimated population of 470, a dramatic increase from the 182 recorded in the 2020 Census. The population is 50.6% Multiracial, 38.5% White, 7.7% Hispanic, 2.6% Native American/Other, 0.6% Black, and 0.0% Asian. This demographic dot map shows the population of Rock Island Arsenal, with one dot drawn for each person counted by the Census, color-coded by race.

Rock Island Arsenal has become considerably less racially diverse since the 2020 Census. It is 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 Island Arsenal, that probability was 64.3% in 2020 and 58.9% in the most recent ACS estimates.

Rock Island Arsenal is ranked the 953rd 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 Island Arsenal was ranked the 1213th most populous place in the 2020 Census.

Rock Island Arsenal's White Population

181 residents of Rock Island Arsenal, or 38.5% of the population, identify as White. The share of White residents in Rock Island Arsenal is significantly lower than in Illinois overall, where 58.1% of the population is White. Rock Island Arsenal ranks 1329th statewide in terms of White residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Rock Island Arsenal's White population has grown by an estimated 79.2%. White residents' share of Rock Island Arsenal's population has decreased from 55.5% to 38.5%.

Rock Island Arsenal is less White than neighboring Moline (62.1% White), Rock Island (62.5% White), Davenport (71.2% White), Milan (81.7% White), and Riverdale (81.1% White).

Rock Island Arsenal's Black Population

3 residents of Rock Island Arsenal, or 0.6% of the population, identify as Black. The share of Black residents in Rock Island Arsenal is considerably lower than in Illinois overall, where 13.3% of the population is Black. Rock Island Arsenal ranks 117th statewide in terms of Black residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Rock Island Arsenal's Black population has declined by an estimated 87.5%. Black residents' share of Rock Island Arsenal's population has decreased from 13.2% to 0.6%.

Rock Island Arsenal is less Black than neighboring Moline (10.5% Black), Rock Island (15.6% Black), Davenport (11% Black), Milan (1.9% Black), and Riverdale (6.6% Black).

Rock Island Arsenal's Asian Population

0 residents of Rock Island Arsenal, or 0.0% of the population, identify as Asian. The share of Asian residents in Rock Island Arsenal is lower than in Illinois overall, where 5.9% of the population is Asian. Rock Island Arsenal ranks 125th statewide in terms of Asian residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Rock Island Arsenal's Asian population has declined by an estimated 100.0%. Asian residents' share of Rock Island Arsenal's population has decreased from 4.9% to 0.0%.

Rock Island Arsenal is less Asian than neighboring Moline (3.2% Asian), Rock Island (3.8% Asian), Davenport (1.9% Asian), Milan (1.4% Asian), and Riverdale (0.3% Asian).

Rock Island Arsenal's Hispanic Population

36 residents of Rock Island Arsenal, or 7.7% of the population, identify as Hispanic. The share of Hispanic residents in Rock Island Arsenal is considerably lower than in Illinois overall, where 18.8% of the population is Hispanic. Rock Island Arsenal ranks 294th statewide in terms of Hispanic residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Rock Island Arsenal's Hispanic population has grown by an estimated 125.0%. Hispanic residents' share of Rock Island Arsenal's population has decreased from 8.8% to 7.7%.

Rock Island Arsenal is more Hispanic than neighboring Riverdale (3.5% Hispanic). Rock Island Arsenal is less Hispanic than neighboring Moline (19.8% Hispanic), Rock Island (13.3% Hispanic), Davenport (9% Hispanic), and Milan (10.7% Hispanic).

Rock Island Arsenal's Native American/Other Population

12 residents of Rock Island Arsenal, or 2.6% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Rock Island Arsenal is slightly higher than in Illinois overall, where 0.5% of the population is Native American/Other. Rock Island Arsenal ranks 15th statewide in terms of Native American/Other residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Rock Island Arsenal's Native American/Other population has grown by an estimated 100.0%. Native American/Other residents' share of Rock Island Arsenal's population has decreased from 3.3% to 2.6%.

Rock Island Arsenal is more Native American/Other than neighboring Moline (0.2% Native American/Other), Rock Island (0.6% Native American/Other), Davenport (0.8% Native American/Other), Milan (0.3% Native American/Other), and Riverdale (1.5% Native American/Other).

Rock Island Arsenal's Multiracial Population

238 residents of Rock Island Arsenal, or 50.6% of the population, identify as Multiracial. The share of Multiracial residents in Rock Island Arsenal is significantly higher than in Illinois overall, where 3.4% of the population is Multiracial. Rock Island Arsenal ranks 4th statewide in terms of Multiracial residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Rock Island Arsenal's Multiracial population has grown by an estimated 815.4%. Multiracial residents' share of Rock Island Arsenal's population has increased from 14.3% to 50.6%.

Rock Island Arsenal is more Multiracial than neighboring Moline (4.2% Multiracial), Rock Island (4.3% Multiracial), Davenport (6.1% Multiracial), Milan (4% Multiracial), and Riverdale (7.1% 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.