Alexander County Demographics

A map of Alexander County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	3,066	3,274	62.9%	62.5%
Black	1,604	1,612	32.9%	30.8%
Multiracial	151	236	3.1%	4.5%
Hispanic	33	82	0.7%	1.6%
Asian	21	6	0.4%	0.1%
Native American/Other	0	30	0.0%	0.6%

Alexander County, Illinois has an estimated population of 4,875, a decrease from the 5,240 recorded in the 2020 Census. The population is 62.9% White, 32.9% Black, 3.1% Multiracial, 0.7% Hispanic, 0.4% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Alexander County, with one dot drawn for each person counted by the Census, color-coded by race.

Alexander has become less 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 Alexander County, that probability was 51.3% in 2020 and 49.5% in the most recent ACS estimates.

Alexander County is ranked the 98th most populous county in Illinois, out of 102 counties. Alexander County was ranked the 96th most populous county in the 2020 Census.

Alexander County's White Population

3,066 residents of Alexander County, or 62.9% of the population, identify as White. The share of White residents in Alexander County is slightly higher than in Illinois overall, where 58.1% of the population is White. Alexander County ranks 96th statewide in terms of White residents as a share of the population, out of 102 counties.

Since the 2020 Census, Alexander County's White population has declined by an estimated 6.4%. White residents' share of Alexander County's population has remained roughly unchanged at 62.9%.

Alexander County is more White than neighboring Pulaski County (61.9% White). Alexander County is less White than neighboring Scott County (80.8% White), Union County (89.5% White), Ballard County (91% White), and Mississippi County (70.7% White).

Alexander County's Black Population

1,604 residents of Alexander County, or 32.9% of the population, identify as Black. The share of Black residents in Alexander County is significantly higher than in Illinois overall, where 13.3% of the population is Black. Alexander County ranks 1st statewide in terms of Black residents as a share of the population, out of 102 counties.

Since the 2020 Census, Alexander County's Black population has remained roughly the same. Black residents' share of Alexander County's population has increased from 30.8% to 32.9%.

Alexander County is more Black than neighboring Scott County (9.1% Black), Union County (0.9% Black), Ballard County (3.6% Black), and Mississippi County (19% Black). Alexander County is less Black than neighboring Pulaski County (33.6% Black).

Alexander County's Asian Population

21 residents of Alexander County, or 0.4% of the population, identify as Asian. The share of Asian residents in Alexander County is lower than in Illinois overall, where 5.9% of the population is Asian. Alexander County ranks 102nd statewide in terms of Asian residents as a share of the population, out of 102 counties.

Since the 2020 Census, Alexander County's Asian population has grown by an estimated 250.0%. Asian residents' share of Alexander County's population has remained roughly unchanged at 0.4%.

Alexander County is more Asian than neighboring Pulaski County (0.2% Asian), Scott County (0.1% Asian), and Ballard County (0.1% Asian). Alexander County is less Asian than neighboring Union County (0.6% Asian), and Mississippi County (0.6% Asian).

Alexander County's Hispanic Population

33 residents of Alexander County, or 0.7% of the population, identify as Hispanic. The share of Hispanic residents in Alexander County is significantly lower than in Illinois overall, where 18.8% of the population is Hispanic. Alexander County ranks 84th statewide in terms of Hispanic residents as a share of the population, out of 102 counties.

Since the 2020 Census, Alexander County's Hispanic population has declined by an estimated 59.8%. Hispanic residents' share of Alexander County's population has decreased from 1.6% to 0.7%.

Alexander County is less Hispanic than neighboring Pulaski County (1% Hispanic), Scott County (2.6% Hispanic), Union County (5.5% Hispanic), Ballard County (1.6% Hispanic), and Mississippi County (0.8% Hispanic).

Alexander County's Native American/Other Population

0 residents of Alexander County, 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 Alexander County is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Alexander County ranks 18th statewide in terms of Native American/Other residents as a share of the population, out of 102 counties.

Since the 2020 Census, Alexander County's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Alexander County's population has decreased from 0.6% to 0.0%.

Alexander County is less Native American/Other than neighboring Pulaski County (0.1% Native American/Other), Scott County (0.3% Native American/Other), and Union County (0.1% Native American/Other).

Alexander County's Multiracial Population

151 residents of Alexander County, or 3.1% of the population, identify as Multiracial. The share of Multiracial residents in Alexander County is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Alexander County ranks 16th statewide in terms of Multiracial residents as a share of the population, out of 102 counties.

Since the 2020 Census, Alexander County's Multiracial population has declined by an estimated 36.0%. Multiracial residents' share of Alexander County's population has decreased from 4.5% to 3.1%.

Alexander County is less Multiracial than neighboring Pulaski County (3.3% Multiracial), Scott County (7% Multiracial), Union County (3.4% Multiracial), Ballard County (3.7% Multiracial), and Mississippi County (8.9% 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.