Platte County Demographics

A map of Platte County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	84,638	81,426	76.7%	76.3%
Black	8,224	8,135	7.5%	7.6%
Hispanic	7,893	7,161	7.2%	6.7%
Multiracial	5,788	5,730	5.2%	5.4%
Asian	2,798	2,721	2.5%	2.5%
Native American/Other	1,030	1,545	0.9%	1.4%

Platte County, Missouri has an estimated population of 110,371, an increase from the 106,718 recorded in the 2020 Census. The population is 76.7% White, 7.5% Black, 7.2% Hispanic, 5.2% Multiracial, 2.5% Asian, and 0.9% Native American/Other. This demographic dot map shows the population of Platte County, with one dot drawn for each person counted by the Census, color-coded by race.

Platte has become slightly less racially diverse since the 2020 Census. It is about as diverse as Missouri overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Platte County, that probability was 40.4% in 2020 and 39.8% in the most recent ACS estimates.

Platte County is ranked the 11th most populous county in Missouri, out of 115 counties. Platte County was ranked the 11th most populous county in the 2020 Census.

Platte County's White Population

84,638 residents of Platte County, or 76.7% of the population, identify as White. The share of White residents in Platte County is comparable to the share in Missouri overall, where 76.3% of the population is White. Platte County ranks 104th statewide in terms of White residents as a share of the population, out of 115 counties.

Since the 2020 Census, Platte County's White population has grown by an estimated 3.9%. White residents' share of Platte County's population has remained roughly unchanged at 76.7%.

Platte County is more White than neighboring Wyandotte County (36.4% White). Platte County is less White than neighboring Buchanan County (79.7% White), Leavenworth County (77.4% White), Clay County (77% White), and Clinton County (91.9% White).

Platte County's Black Population

8,224 residents of Platte County, or 7.5% of the population, identify as Black. The share of Black residents in Platte County is slightly lower than in Missouri overall, where 10.9% of the population is Black. Platte County ranks 13th statewide in terms of Black residents as a share of the population, out of 115 counties.

Since the 2020 Census, Platte County's Black population has grown by an estimated 1.1%. Black residents' share of Platte County's population has remained roughly unchanged at 7.5%.

Platte County is more Black than neighboring Buchanan County (5.6% Black), Leavenworth County (6.8% Black), Clay County (6.8% Black), and Clinton County (0.8% Black). Platte County is less Black than neighboring Wyandotte County (18.1% Black).

Platte County's Asian Population

2,798 residents of Platte County, or 2.5% of the population, identify as Asian. The share of Asian residents in Platte County is comparable to the share in Missouri overall, where 2.1% of the population is Asian. Platte County ranks 8th statewide in terms of Asian residents as a share of the population, out of 115 counties.

Since the 2020 Census, Platte County's Asian population has grown by an estimated 2.8%. Asian residents' share of Platte County's population has remained roughly unchanged at 2.5%.

Platte County is more Asian than neighboring Buchanan County (1.1% Asian), Leavenworth County (1.3% Asian), and Clinton County (0.2% Asian). Platte County is less Asian than neighboring Wyandotte County (5.2% Asian), and Clay County (2.6% Asian).

Platte County's Hispanic Population

7,893 residents of Platte County, or 7.2% of the population, identify as Hispanic. The share of Hispanic residents in Platte County is comparable to the share in Missouri overall, where 5.2% of the population is Hispanic. Platte County ranks 13th statewide in terms of Hispanic residents as a share of the population, out of 115 counties.

Since the 2020 Census, Platte County's Hispanic population has grown by an estimated 10.2%. Hispanic residents' share of Platte County's population has increased from 6.7% to 7.2%.

Platte County is more Hispanic than neighboring Clinton County (2.6% Hispanic). Platte County is less Hispanic than neighboring Wyandotte County (34.1% Hispanic), Buchanan County (7.6% Hispanic), Leavenworth County (7.6% Hispanic), and Clay County (8% Hispanic).

Platte County's Native American/Other Population

1,030 residents of Platte County, or 0.9% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Platte County is comparable to the share in Missouri overall, where 0.7% of the population is Native American/Other. Platte County ranks 6th statewide in terms of Native American/Other residents as a share of the population, out of 115 counties.

Since the 2020 Census, Platte County's Native American/Other population has declined by an estimated 33.3%. Native American/Other residents' share of Platte County's population has remained roughly unchanged at 0.9%.

Platte County is more Native American/Other than neighboring Buchanan County (0.8% Native American/Other), Clay County (0.8% Native American/Other), and Clinton County (0.3% Native American/Other). Platte County is less Native American/Other than neighboring Wyandotte County (1.1% Native American/Other), and Leavenworth County (1% Native American/Other).

Platte County's Multiracial Population

5,788 residents of Platte County, or 5.2% of the population, identify as Multiracial. The share of Multiracial residents in Platte County is comparable to the share in Missouri overall, where 4.8% of the population is Multiracial. Platte County ranks 23rd statewide in terms of Multiracial residents as a share of the population, out of 115 counties.

Since the 2020 Census, Platte County's Multiracial population has grown by an estimated 1.0%. Multiracial residents' share of Platte County's population has remained roughly unchanged at 5.2%.

Platte County is more Multiracial than neighboring Wyandotte County (5.1% Multiracial), Clay County (4.8% Multiracial), and Clinton County (4.2% Multiracial). Platte County is less Multiracial than neighboring Buchanan County (5.3% Multiracial), and Leavenworth County (5.9% 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.