Marshall County Demographics

A map of Marshall County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	10,724	10,858	92.1%	92.5%
Multiracial	431	389	3.7%	3.3%
Hispanic	409	323	3.5%	2.8%
Black	47	86	0.4%	0.7%
Native American/Other	26	43	0.2%	0.4%
Asian	10	43	0.1%	0.4%

Marshall County, Illinois has an estimated population of 11,647, a less than 1% change from the 11,742 recorded in the 2020 Census. The population is 92.1% White, 3.7% Multiracial, 3.5% Hispanic, 0.4% Black, 0.2% Native American/Other, and 0.1% Asian. This demographic dot map shows the population of Marshall County, with one dot drawn for each person counted by the Census, color-coded by race.

Marshall has become slightly 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 Marshall County, that probability was 14.3% in 2020 and 15.0% in the most recent ACS estimates.

Marshall County is ranked the 85th most populous county in Illinois, out of 102 counties. Marshall County was ranked the 85th most populous county in the 2020 Census.

Marshall County's White Population

10,724 residents of Marshall County, or 92.1% of the population, identify as White. The share of White residents in Marshall County is significantly higher than in Illinois overall, where 58.1% of the population is White. Marshall County ranks 35th statewide in terms of White residents as a share of the population, out of 102 counties.

Since the 2020 Census, Marshall County's White population has declined by an estimated 1.2%. White residents' share of Marshall County's population has remained roughly unchanged at 92.1%.

Marshall County is more White than neighboring Putnam County (88.6% White), Bureau County (84.6% White), Stark County (90.7% White), and Peoria County (66.1% White). Marshall County is less White than neighboring Woodford County (93.5% White).

Marshall County's Black Population

47 residents of Marshall County, or 0.4% of the population, identify as Black. The share of Black residents in Marshall County is considerably lower than in Illinois overall, where 13.3% of the population is Black. Marshall County ranks 65th statewide in terms of Black residents as a share of the population, out of 102 counties.

Since the 2020 Census, Marshall County's Black population has declined by an estimated 45.3%. Black residents' share of Marshall County's population has remained roughly unchanged at 0.4%.

Marshall County is more Black than neighboring Putnam County (0.3% Black). Marshall County is less Black than neighboring Woodford County (0.6% Black), Bureau County (0.6% Black), Stark County (1.2% Black), and Peoria County (17.2% Black).

Marshall County's Asian Population

10 residents of Marshall County, or 0.1% of the population, identify as Asian. The share of Asian residents in Marshall County is lower than in Illinois overall, where 5.9% of the population is Asian. Marshall County ranks 71st statewide in terms of Asian residents as a share of the population, out of 102 counties.

Since the 2020 Census, Marshall County's Asian population has declined by an estimated 76.7%. Asian residents' share of Marshall County's population has remained roughly unchanged at 0.1%.

Marshall County is less Asian than neighboring Putnam County (0.7% Asian), Woodford County (0.6% Asian), Bureau County (0.9% Asian), Stark County (0.8% Asian), and Peoria County (4.6% Asian).

Marshall County's Hispanic Population

409 residents of Marshall County, or 3.5% of the population, identify as Hispanic. The share of Hispanic residents in Marshall County is significantly lower than in Illinois overall, where 18.8% of the population is Hispanic. Marshall County ranks 54th statewide in terms of Hispanic residents as a share of the population, out of 102 counties.

Since the 2020 Census, Marshall County's Hispanic population has grown by an estimated 26.6%. Hispanic residents' share of Marshall County's population has increased from 2.8% to 3.5%.

Marshall County is more Hispanic than neighboring Woodford County (2.1% Hispanic), and Stark County (2.9% Hispanic). Marshall County is less Hispanic than neighboring Putnam County (6.6% Hispanic), Bureau County (10.2% Hispanic), and Peoria County (6% Hispanic).

Marshall County's Native American/Other Population

26 residents of Marshall County, or 0.2% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Marshall County is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Marshall County ranks 64th statewide in terms of Native American/Other residents as a share of the population, out of 102 counties.

Since the 2020 Census, Marshall County's Native American/Other population has declined by an estimated 39.5%. Native American/Other residents' share of Marshall County's population has remained roughly unchanged at 0.2%.

Marshall County is more Native American/Other than neighboring Stark County (0.1% Native American/Other). Marshall County is less Native American/Other than neighboring Putnam County (0.6% Native American/Other), Woodford County (0.3% Native American/Other), Bureau County (0.3% Native American/Other), and Peoria County (0.6% Native American/Other).

Marshall County's Multiracial Population

431 residents of Marshall County, or 3.7% of the population, identify as Multiracial. The share of Multiracial residents in Marshall County is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Marshall County ranks 51st statewide in terms of Multiracial residents as a share of the population, out of 102 counties.

Since the 2020 Census, Marshall County's Multiracial population has grown by an estimated 10.8%. Multiracial residents' share of Marshall County's population has remained roughly unchanged at 3.7%.

Marshall County is more Multiracial than neighboring Putnam County (3.2% Multiracial), Woodford County (3% Multiracial), and Bureau County (3.4% Multiracial). Marshall County is less Multiracial than neighboring Stark County (4.2% Multiracial), and Peoria County (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.