Miami County Demographics

A map of Miami County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	31,047	31,123	86.9%	86.5%
Multiracial	1,452	1,344	4.1%	3.7%
Black	1,338	1,792	3.7%	5.0%
Hispanic	1,327	1,186	3.7%	3.3%
Native American/Other	320	387	0.9%	1.1%
Asian	228	130	0.6%	0.4%

Miami County, Indiana has an estimated population of 35,712, a less than 1% change from the 35,962 recorded in the 2020 Census. The population is 86.9% White, 4.1% Multiracial, 3.7% Black, 3.7% Hispanic, 0.9% Native American/Other, and 0.6% Asian. This demographic dot map shows the population of Miami County, with one dot drawn for each person counted by the Census, color-coded by race.

Miami 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 Miami County, that probability was 24.6% in 2020 and 24.0% in the most recent ACS estimates.

Miami County is ranked the 45th most populous county in Indiana, out of 92 counties. Miami County was ranked the 44th most populous county in the 2020 Census.

Miami County's White Population

31,047 residents of Miami County, or 86.9% of the population, identify as White. The share of White residents in Miami County is considerably higher than in Indiana overall, where 75.4% of the population is White. Miami County ranks 62nd statewide in terms of White residents as a share of the population, out of 92 counties.

Since the 2020 Census, Miami County's White population has remained roughly the same. White residents' share of Miami County's population has remained roughly unchanged at 86.9%.

Miami County is more White than neighboring Howard County (82.6% White), and Cass County (74.1% White). Miami County is less White than neighboring Wabash County (92.2% White), Fulton County (89.5% White), and Tipton County (92.8% White).

Miami County's Black Population

1,338 residents of Miami County, or 3.7% of the population, identify as Black. The share of Black residents in Miami County is lower than in Indiana overall, where 9.1% of the population is Black. Miami County ranks 17th statewide in terms of Black residents as a share of the population, out of 92 counties.

Since the 2020 Census, Miami County's Black population has declined by an estimated 25.3%. Black residents' share of Miami County's population has decreased from 5.0% to 3.7%.

Miami County is more Black than neighboring Wabash County (0.9% Black), Cass County (1.2% Black), Fulton County (0.5% Black), and Tipton County (1.1% Black). Miami County is less Black than neighboring Howard County (7.3% Black).

Miami County's Asian Population

228 residents of Miami County, or 0.6% of the population, identify as Asian. The share of Asian residents in Miami County is comparable to the share in Indiana overall, where 2.6% of the population is Asian. Miami County ranks 62nd statewide in terms of Asian residents as a share of the population, out of 92 counties.

Since the 2020 Census, Miami County's Asian population has grown by an estimated 75.4%. Asian residents' share of Miami County's population has remained roughly unchanged at 0.6%.

Miami County is more Asian than neighboring Wabash County (0.4% Asian), Fulton County (0.1% Asian), and Tipton County (0.3% Asian). Miami County is less Asian than neighboring Howard County (1.4% Asian), and Cass County (1.4% Asian).

Miami County's Hispanic Population

1,327 residents of Miami County, or 3.7% of the population, identify as Hispanic. The share of Hispanic residents in Miami County is slightly lower than in Indiana overall, where 8.6% of the population is Hispanic. Miami County ranks 48th statewide in terms of Hispanic residents as a share of the population, out of 92 counties.

Since the 2020 Census, Miami County's Hispanic population has grown by an estimated 11.9%. Hispanic residents' share of Miami County's population has remained roughly unchanged at 3.7%.

Miami County is more Hispanic than neighboring Wabash County (3.2% Hispanic), and Tipton County (3.3% Hispanic). Miami County is less Hispanic than neighboring Howard County (4.1% Hispanic), Cass County (18.6% Hispanic), and Fulton County (5.5% Hispanic).

Miami County's Native American/Other Population

320 residents of Miami 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 Miami County is comparable to the share in Indiana overall, where 0.5% of the population is Native American/Other. Miami County ranks 1st statewide in terms of Native American/Other residents as a share of the population, out of 92 counties.

Since the 2020 Census, Miami County's Native American/Other population has declined by an estimated 17.3%. Native American/Other residents' share of Miami County's population has remained roughly unchanged at 0.9%.

Miami County is more Native American/Other than neighboring Wabash County (0.3% Native American/Other), Howard County (0.3% Native American/Other), Cass County (0.6% Native American/Other), and Tipton County (0.3% Native American/Other). Miami County is less Native American/Other than neighboring Fulton County (1.5% Native American/Other).

Miami County's Multiracial Population

1,452 residents of Miami County, or 4.1% of the population, identify as Multiracial. The share of Multiracial residents in Miami County is comparable to the share in Indiana overall, where 3.8% of the population is Multiracial. Miami County ranks 26th statewide in terms of Multiracial residents as a share of the population, out of 92 counties.

Since the 2020 Census, Miami County's Multiracial population has grown by an estimated 8.0%. Multiracial residents' share of Miami County's population has remained roughly unchanged at 4.1%.

Miami County is more Multiracial than neighboring Wabash County (2.9% Multiracial), Fulton County (2.9% Multiracial), and Tipton County (2.2% Multiracial). Miami County is less Multiracial than neighboring Howard County (4.2% Multiracial), and Cass County (4.2% 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.