Spencer County Demographics

A map of Spencer County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	18,591	18,368	93.2%	92.7%
Hispanic	721	676	3.6%	3.4%
Multiracial	395	491	2.0%	2.5%
Black	113	129	0.6%	0.7%
Native American/Other	86	73	0.4%	0.4%
Asian	49	73	0.2%	0.4%

Spencer County, Indiana has an estimated population of 19,955, a less than 1% change from the 19,810 recorded in the 2020 Census. The population is 93.2% White, 3.6% Hispanic, 2.0% Multiracial, 0.6% Black, 0.4% Native American/Other, and 0.2% Asian. This demographic dot map shows the population of Spencer County, with one dot drawn for each person counted by the Census, color-coded by race.

Spencer has become slightly less racially diverse since the 2020 Census. It is considerably less diverse than Indiana overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Spencer County, that probability was 13.8% in 2020 and 13.0% in the most recent ACS estimates.

Spencer County is ranked the 73rd most populous county in Indiana, out of 92 counties. Spencer County was ranked the 74th most populous county in the 2020 Census.

Spencer County's White Population

18,591 residents of Spencer County, or 93.2% of the population, identify as White. The share of White residents in Spencer County is significantly higher than in Indiana overall, where 75.4% of the population is White. Spencer County ranks 34th statewide in terms of White residents as a share of the population, out of 92 counties.

Since the 2020 Census, Spencer County's White population has grown by an estimated 1.2%. White residents' share of Spencer County's population has increased from 92.7% to 93.2%.

Spencer County is more White than neighboring Warrick County (89.5% White), Daviess County (84.9% White), Dubois County (86.9% White), and Perry County (92.5% White). Spencer County is less White than neighboring Hancock County (94.1% White).

Spencer County's Black Population

113 residents of Spencer County, or 0.6% of the population, identify as Black. The share of Black residents in Spencer County is lower than in Indiana overall, where 9.1% of the population is Black. Spencer County ranks 47th statewide in terms of Black residents as a share of the population, out of 92 counties.

Since the 2020 Census, Spencer County's Black population has declined by an estimated 12.4%. Black residents' share of Spencer County's population has remained roughly unchanged at 0.6%.

Spencer County is less Black than neighboring Warrick County (1.7% Black), Hancock County (1.3% Black), Daviess County (4% Black), Dubois County (0.8% Black), and Perry County (2.1% Black).

Spencer County's Asian Population

49 residents of Spencer County, or 0.2% of the population, identify as Asian. The share of Asian residents in Spencer County is slightly lower than in Indiana overall, where 2.6% of the population is Asian. Spencer County ranks 61st statewide in terms of Asian residents as a share of the population, out of 92 counties.

Since the 2020 Census, Spencer County's Asian population has declined by an estimated 32.9%. Asian residents' share of Spencer County's population has remained roughly unchanged at 0.2%.

Spencer County is more Asian than neighboring Hancock County (0.1% Asian). Spencer County is less Asian than neighboring Warrick County (1.7% Asian), Daviess County (2.1% Asian), Dubois County (0.5% Asian), and Perry County (0.6% Asian).

Spencer County's Hispanic Population

721 residents of Spencer County, or 3.6% of the population, identify as Hispanic. The share of Hispanic residents in Spencer County is slightly lower than in Indiana overall, where 8.6% of the population is Hispanic. Spencer County ranks 46th statewide in terms of Hispanic residents as a share of the population, out of 92 counties.

Since the 2020 Census, Spencer County's Hispanic population has grown by an estimated 6.7%. Hispanic residents' share of Spencer County's population has remained roughly unchanged at 3.6%.

Spencer County is more Hispanic than neighboring Warrick County (2.5% Hispanic), Hancock County (0.8% Hispanic), and Perry County (1.6% Hispanic). Spencer County is less Hispanic than neighboring Daviess County (4.3% Hispanic), and Dubois County (10% Hispanic).

Spencer County's Native American/Other Population

86 residents of Spencer County, or 0.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Spencer County is comparable to the share in Indiana overall, where 0.5% of the population is Native American/Other. Spencer County ranks 69th statewide in terms of Native American/Other residents as a share of the population, out of 92 counties.

Since the 2020 Census, Spencer County's Native American/Other population has grown by an estimated 17.8%. Native American/Other residents' share of Spencer County's population has remained roughly unchanged at 0.4%.

Spencer County is more Native American/Other than neighboring Dubois County (0.3% Native American/Other), and Perry County (0.3% Native American/Other). Spencer County is less Native American/Other than neighboring Warrick County (0.8% Native American/Other), Hancock County (0.9% Native American/Other), and Daviess County (0.9% Native American/Other).

Spencer County's Multiracial Population

395 residents of Spencer County, or 2.0% of the population, identify as Multiracial. The share of Multiracial residents in Spencer County is comparable to the share in Indiana overall, where 3.8% of the population is Multiracial. Spencer County ranks 82nd statewide in terms of Multiracial residents as a share of the population, out of 92 counties.

Since the 2020 Census, Spencer County's Multiracial population has declined by an estimated 19.6%. Multiracial residents' share of Spencer County's population has decreased from 2.5% to 2.0%.

Spencer County is more Multiracial than neighboring Dubois County (1.5% Multiracial). Spencer County is less Multiracial than neighboring Warrick County (3.8% Multiracial), Hancock County (2.9% Multiracial), Daviess County (3.8% Multiracial), and Perry County (2.9% 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.