Plymouth, IL Demographics

A map of Plymouth's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	406	418	89.0%	95.9%
Hispanic	20	4	4.4%	0.9%
Asian	18	1	3.9%	0.2%
Black	10	4	2.2%	0.9%
Multiracial	2	9	0.4%	2.1%
Native American/Other	0	0	0.0%	0.0%

Plymouth, Illinois has an estimated population of 456, an increase from the 436 recorded in the 2020 Census. The population is 89.0% White, 4.4% Hispanic, 3.9% Asian, 2.2% Black, 0.4% Multiracial, and 0.0% Native American/Other. This demographic dot map shows the population of Plymouth, with one dot drawn for each person counted by the Census, color-coded by race.

Plymouth 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 Plymouth, that probability was 8.0% in 2020 and 20.3% in the most recent ACS estimates.

Plymouth is ranked the 965th 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). Plymouth was ranked the 966th most populous place in the 2020 Census.

Plymouth's White Population

406 residents of Plymouth, or 89.0% of the population, identify as White. The share of White residents in Plymouth is significantly higher than in Illinois overall, where 58.1% of the population is White. Plymouth ranks 119th statewide in terms of White residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Plymouth's White population has declined by an estimated 2.9%. White residents' share of Plymouth's population has decreased from 95.9% to 89.0%.

Plymouth is less White than neighboring Augusta (98.5% White), Tennessee (96.9% White), Bowen (90.9% White), La Prairie (97.9% White), and Colchester (94.6% White).

Plymouth's Black Population

10 residents of Plymouth, or 2.2% of the population, identify as Black. The share of Black residents in Plymouth is considerably lower than in Illinois overall, where 13.3% of the population is Black. Plymouth ranks 609th statewide in terms of Black residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Plymouth's Black population has grown by an estimated 150.0%. Black residents' share of Plymouth's population has increased from 0.9% to 2.2%.

Plymouth is more Black than neighboring Augusta (0% Black), Tennessee (0% Black), Bowen (0% Black), La Prairie (0% Black), and Colchester (0% Black).

Plymouth's Asian Population

18 residents of Plymouth, or 3.9% of the population, identify as Asian. The share of Asian residents in Plymouth is slightly lower than in Illinois overall, where 5.9% of the population is Asian. Plymouth ranks 882nd statewide in terms of Asian residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Plymouth's Asian population has grown by an estimated 1700.0%. Asian residents' share of Plymouth's population has increased from 0.2% to 3.9%.

Plymouth is more Asian than neighboring Augusta (0% Asian), Tennessee (0% Asian), Bowen (0% Asian), La Prairie (0% Asian), and Colchester (0% Asian).

Plymouth's Hispanic Population

20 residents of Plymouth, or 4.4% of the population, identify as Hispanic. The share of Hispanic residents in Plymouth is considerably lower than in Illinois overall, where 18.8% of the population is Hispanic. Plymouth ranks 1268th statewide in terms of Hispanic residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Plymouth's Hispanic population has grown by an estimated 400.0%. Hispanic residents' share of Plymouth's population has increased from 0.9% to 4.4%.

Plymouth is more Hispanic than neighboring Augusta (1% Hispanic), Tennessee (3.1% Hispanic), Bowen (0.2% Hispanic), La Prairie (0% Hispanic), and Colchester (3.1% Hispanic).

Plymouth's Native American/Other Population

0 residents of Plymouth, 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 Plymouth is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Plymouth ranks 1139th statewide in terms of Native American/Other residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Plymouth's Native American/Other population has grown from 0 to an estimated 0. Native American/Other residents' share of Plymouth's population has remained roughly unchanged at 0.0%.

Plymouth is less Native American/Other than neighboring Augusta (0.1% Native American/Other), and La Prairie (2.1% Native American/Other).

Plymouth's Multiracial Population

2 residents of Plymouth, or 0.4% of the population, identify as Multiracial. The share of Multiracial residents in Plymouth is slightly lower than in Illinois overall, where 3.4% of the population is Multiracial. Plymouth ranks 1240th statewide in terms of Multiracial residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Plymouth's Multiracial population has declined by an estimated 77.8%. Multiracial residents' share of Plymouth's population has decreased from 2.1% to 0.4%.

Plymouth is more Multiracial than neighboring Augusta (0.3% Multiracial), Tennessee (0% Multiracial), and La Prairie (0% Multiracial). Plymouth is less Multiracial than neighboring Bowen (8.9% Multiracial), and Colchester (2.3% 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.