St. Clair County Demographics

A map of St. Clair County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	78,235	74,962	83.1%	82.3%
Black	9,458	8,617	10.0%	9.5%
Hispanic	2,805	2,575	3.0%	2.8%
Multiracial	2,497	3,791	2.7%	4.2%
Native American/Other	634	503	0.7%	0.6%
Asian	537	655	0.6%	0.7%

St. Clair County, Alabama has an estimated population of 94,166, an increase from the 91,103 recorded in the 2020 Census. The population is 83.1% White, 10.0% Black, 3.0% Hispanic, 2.7% Multiracial, 0.7% Native American/Other, and 0.6% Asian. This demographic dot map shows the population of St. Clair County, with one dot drawn for each person counted by the Census, color-coded by race.

St. Clair has become less racially diverse since the 2020 Census. It is considerably less diverse than Alabama overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In St. Clair County, that probability was 31.1% in 2020 and 29.8% in the most recent ACS estimates.

St. Clair County is ranked the 16th most populous county in Alabama, out of 67 counties. St. Clair County was ranked the 16th most populous county in the 2020 Census.

St. Clair County's White Population

78,235 residents of St. Clair County, or 83.1% of the population, identify as White. The share of White residents in St. Clair County is significantly higher than in Alabama overall, where 63.4% of the population is White. St. Clair County ranks 11th statewide in terms of White residents as a share of the population, out of 67 counties.

Since the 2020 Census, St. Clair County's White population has grown by an estimated 4.4%. White residents' share of St. Clair County's population has increased from 82.3% to 83.1%.

St. Clair County is more White than neighboring Talladega County (61.8% White), Etowah County (76.2% White), Calhoun County (69.3% White), and Shelby County (73.2% White). St. Clair County is less White than neighboring Blount County (84.5% White).

St. Clair County's Black Population

9,458 residents of St. Clair County, or 10.0% of the population, identify as Black. The share of Black residents in St. Clair County is significantly lower than in Alabama overall, where 25.6% of the population is Black. St. Clair County ranks 53rd statewide in terms of Black residents as a share of the population, out of 67 counties.

Since the 2020 Census, St. Clair County's Black population has grown by an estimated 9.8%. Black residents' share of St. Clair County's population has increased from 9.5% to 10.0%.

St. Clair County is more Black than neighboring Blount County (1.2% Black). St. Clair County is less Black than neighboring Talladega County (29.8% Black), Etowah County (14.7% Black), Calhoun County (21.6% Black), and Shelby County (13.4% Black).

St. Clair County's Asian Population

537 residents of St. Clair County, or 0.6% of the population, identify as Asian. The share of Asian residents in St. Clair County is comparable to the share in Alabama overall, where 1.4% of the population is Asian. St. Clair County ranks 23rd statewide in terms of Asian residents as a share of the population, out of 67 counties.

Since the 2020 Census, St. Clair County's Asian population has declined by an estimated 18.0%. Asian residents' share of St. Clair County's population has remained roughly unchanged at 0.6%.

St. Clair County is more Asian than neighboring Blount County (0.1% Asian). St. Clair County is less Asian than neighboring Etowah County (0.7% Asian), Calhoun County (0.8% Asian), and Shelby County (2.2% Asian).

St. Clair County's Hispanic Population

2,805 residents of St. Clair County, or 3.0% of the population, identify as Hispanic. The share of Hispanic residents in St. Clair County is slightly lower than in Alabama overall, where 5.6% of the population is Hispanic. St. Clair County ranks 38th statewide in terms of Hispanic residents as a share of the population, out of 67 counties.

Since the 2020 Census, St. Clair County's Hispanic population has grown by an estimated 8.9%. Hispanic residents' share of St. Clair County's population has remained roughly unchanged at 3.0%.

St. Clair County is more Hispanic than neighboring Talladega County (2.4% Hispanic). St. Clair County is less Hispanic than neighboring Blount County (10.3% Hispanic), Etowah County (5.2% Hispanic), Calhoun County (4.6% Hispanic), and Shelby County (7.6% Hispanic).

St. Clair County's Native American/Other Population

634 residents of St. Clair County, or 0.7% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in St. Clair County is comparable to the share in Alabama overall, where 0.7% of the population is Native American/Other. St. Clair County ranks 37th statewide in terms of Native American/Other residents as a share of the population, out of 67 counties.

Since the 2020 Census, St. Clair County's Native American/Other population has grown by an estimated 26.0%. Native American/Other residents' share of St. Clair County's population has remained roughly unchanged at 0.7%.

St. Clair County is more Native American/Other than neighboring Blount County (0.5% Native American/Other), Talladega County (0.3% Native American/Other), and Etowah County (0.5% Native American/Other).

St. Clair County's Multiracial Population

2,497 residents of St. Clair County, or 2.7% of the population, identify as Multiracial. The share of Multiracial residents in St. Clair County is comparable to the share in Alabama overall, where 3.3% of the population is Multiracial. St. Clair County ranks 12th statewide in terms of Multiracial residents as a share of the population, out of 67 counties.

Since the 2020 Census, St. Clair County's Multiracial population has declined by an estimated 34.1%. Multiracial residents' share of St. Clair County's population has decreased from 4.2% to 2.7%.

St. Clair County is less Multiracial than neighboring Blount County (3.3% Multiracial), Talladega County (5% Multiracial), Etowah County (2.8% Multiracial), Calhoun County (3% Multiracial), and Shelby County (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.