Grundy County Demographics

A map of Grundy County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	9,012	9,121	92.1%	93.0%
Multiracial	328	286	3.4%	2.9%
Hispanic	273	241	2.8%	2.5%
Asian	71	54	0.7%	0.6%
Native American/Other	59	56	0.6%	0.6%
Black	44	50	0.4%	0.5%

Grundy County, Missouri has an estimated population of 9,787, a less than 1% change from the 9,808 recorded in the 2020 Census. The population is 92.1% White, 3.4% Multiracial, 2.8% Hispanic, 0.7% Asian, 0.6% Native American/Other, and 0.4% Black. This demographic dot map shows the population of Grundy County, with one dot drawn for each person counted by the Census, color-coded by race.

Grundy has become more racially diverse since the 2020 Census. It is considerably less diverse than Missouri overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Grundy County, that probability was 13.4% in 2020 and 15.0% in the most recent ACS estimates.

Grundy County is ranked the 87th most populous county in Missouri, out of 115 counties. Grundy County was ranked the 87th most populous county in the 2020 Census.

Grundy County's White Population

9,012 residents of Grundy County, or 92.1% of the population, identify as White. The share of White residents in Grundy County is significantly higher than in Missouri overall, where 76.3% of the population is White. Grundy County ranks 21st statewide in terms of White residents as a share of the population, out of 115 counties.

Since the 2020 Census, Grundy County's White population has declined by an estimated 1.2%. White residents' share of Grundy County's population has decreased from 93.0% to 92.1%.

Grundy County is more White than neighboring Mercer County (91.1% White), Livingston County (90.8% White), and Sullivan County (76.8% White). Grundy County is less White than neighboring Daviess County (95.1% White), and Harrison County (93.8% White).

Grundy County's Black Population

44 residents of Grundy County, or 0.4% of the population, identify as Black. The share of Black residents in Grundy County is considerably lower than in Missouri overall, where 10.9% of the population is Black. Grundy County ranks 77th statewide in terms of Black residents as a share of the population, out of 115 counties.

Since the 2020 Census, Grundy County's Black population has declined by an estimated 12.0%. Black residents' share of Grundy County's population has remained roughly unchanged at 0.4%.

Grundy County is more Black than neighboring Mercer County (0.2% Black). Grundy County is less Black than neighboring Livingston County (3% Black), Daviess County (1% Black), Sullivan County (2.7% Black), and Harrison County (0.8% Black).

Grundy County's Asian Population

71 residents of Grundy County, or 0.7% of the population, identify as Asian. The share of Asian residents in Grundy County is comparable to the share in Missouri overall, where 2.1% of the population is Asian. Grundy County ranks 33rd statewide in terms of Asian residents as a share of the population, out of 115 counties.

Since the 2020 Census, Grundy County's Asian population has grown by an estimated 31.5%. Asian residents' share of Grundy County's population has remained roughly unchanged at 0.7%.

Grundy County is more Asian than neighboring Livingston County (0.3% Asian), and Daviess County (0.2% Asian). Grundy County is less Asian than neighboring Mercer County (0.9% Asian), Sullivan County (1% Asian), and Harrison County (1.2% Asian).

Grundy County's Hispanic Population

273 residents of Grundy County, or 2.8% of the population, identify as Hispanic. The share of Hispanic residents in Grundy County is slightly lower than in Missouri overall, where 5.2% of the population is Hispanic. Grundy County ranks 43rd statewide in terms of Hispanic residents as a share of the population, out of 115 counties.

Since the 2020 Census, Grundy County's Hispanic population has grown by an estimated 13.3%. Hispanic residents' share of Grundy County's population has remained roughly unchanged at 2.8%.

Grundy County is more Hispanic than neighboring Livingston County (2.1% Hispanic), Daviess County (1.8% Hispanic), and Harrison County (0.8% Hispanic). Grundy County is less Hispanic than neighboring Mercer County (4.8% Hispanic), and Sullivan County (18.1% Hispanic).

Grundy County's Native American/Other Population

59 residents of Grundy County, or 0.6% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Grundy County is comparable to the share in Missouri overall, where 0.7% of the population is Native American/Other. Grundy County ranks 73rd statewide in terms of Native American/Other residents as a share of the population, out of 115 counties.

Since the 2020 Census, Grundy County's Native American/Other population has grown by an estimated 5.4%. Native American/Other residents' share of Grundy County's population has remained roughly unchanged at 0.6%.

Grundy County is more Native American/Other than neighboring Mercer County (0.4% Native American/Other), Daviess County (0.2% Native American/Other), Sullivan County (0.2% Native American/Other), and Harrison County (0.3% Native American/Other).

Grundy County's Multiracial Population

328 residents of Grundy County, or 3.4% of the population, identify as Multiracial. The share of Multiracial residents in Grundy County is comparable to the share in Missouri overall, where 4.8% of the population is Multiracial. Grundy County ranks 105th statewide in terms of Multiracial residents as a share of the population, out of 115 counties.

Since the 2020 Census, Grundy County's Multiracial population has grown by an estimated 14.7%. Multiracial residents' share of Grundy County's population has increased from 2.9% to 3.4%.

Grundy County is more Multiracial than neighboring Mercer County (2.6% Multiracial), Livingston County (3.2% Multiracial), Daviess County (1.7% Multiracial), Sullivan County (1.2% Multiracial), and Harrison 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.