Potomac, IL Demographics

A map of Potomac's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	524	614	86.6%	89.1%
Hispanic	65	27	10.7%	3.9%
Multiracial	10	33	1.7%	4.8%
Black	6	9	1.0%	1.3%
Asian	0	4	0.0%	0.6%
Native American/Other	0	2	0.0%	0.3%

Potomac, Illinois has an estimated population of 605, a large decrease from the 689 recorded in the 2020 Census. The population is 86.6% White, 10.7% Hispanic, 1.7% Multiracial, 1.0% Black, 0.0% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Potomac, with one dot drawn for each person counted by the Census, color-coded by race.

Potomac has become 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 Potomac, that probability was 20.2% in 2020 and 23.8% in the most recent ACS estimates.

Potomac is ranked the 869th 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). Potomac was ranked the 805th most populous place in the 2020 Census.

Potomac's White Population

524 residents of Potomac, or 86.6% of the population, identify as White. The share of White residents in Potomac is significantly higher than in Illinois overall, where 58.1% of the population is White. Potomac ranks 832nd statewide in terms of White residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Potomac's White population has declined by an estimated 14.7%. White residents' share of Potomac's population has decreased from 89.1% to 86.6%.

Potomac is more White than neighboring Rossville (81.4% White). Potomac is less White than neighboring Henning (91.9% White), Penfield (96.3% White), East Lynn (100% White), and Rankin (94.2% White).

Potomac's Black Population

6 residents of Potomac, or 1.0% of the population, identify as Black. The share of Black residents in Potomac is considerably lower than in Illinois overall, where 13.3% of the population is Black. Potomac ranks 482nd statewide in terms of Black residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Potomac's Black population has declined by an estimated 33.3%. Black residents' share of Potomac's population has remained roughly unchanged at 1.0%.

Potomac is more Black than neighboring Penfield (0% Black), East Lynn (0% Black), and Rankin (0% Black). Potomac is less Black than neighboring Henning (3.4% Black), and Rossville (1.5% Black).

Potomac's Asian Population

0 residents of Potomac, or 0.0% of the population, identify as Asian. The share of Asian residents in Potomac is lower than in Illinois overall, where 5.9% of the population is Asian. Potomac ranks 574th statewide in terms of Asian residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Potomac's Asian population has declined by an estimated 100.0%. Asian residents' share of Potomac's population has decreased from 0.6% to 0.0%.

Potomac is less Asian than neighboring Rossville (0.8% Asian).

Potomac's Hispanic Population

65 residents of Potomac, or 10.7% of the population, identify as Hispanic. The share of Hispanic residents in Potomac is lower than in Illinois overall, where 18.8% of the population is Hispanic. Potomac ranks 611th statewide in terms of Hispanic residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Potomac's Hispanic population has grown by an estimated 140.7%. Hispanic residents' share of Potomac's population has increased from 3.9% to 10.7%.

Potomac is more Hispanic than neighboring Henning (0.4% Hispanic), Penfield (3.7% Hispanic), East Lynn (0% Hispanic), and Rankin (4.7% Hispanic). Potomac is less Hispanic than neighboring Rossville (14.3% Hispanic).

Potomac's Native American/Other Population

0 residents of Potomac, 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 Potomac is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Potomac ranks 893rd statewide in terms of Native American/Other residents as a share of the population, out of 1,461 places.

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

Potomac's Multiracial Population

10 residents of Potomac, or 1.7% of the population, identify as Multiracial. The share of Multiracial residents in Potomac is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Potomac ranks 303rd statewide in terms of Multiracial residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Potomac's Multiracial population has declined by an estimated 69.7%. Multiracial residents' share of Potomac's population has decreased from 4.8% to 1.7%.

Potomac is more Multiracial than neighboring Penfield (0% Multiracial), East Lynn (0% Multiracial), and Rankin (1.2% Multiracial). Potomac is less Multiracial than neighboring Henning (4.2% Multiracial), and Rossville (2% 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.