Miami County, Ohio Population 2024

111,539

Miami County, Ohio's estimated 2024 population is 111,539 with a growth rate of 0.6% in the past year according to the most recent United States census data. Miami County, Ohio is the 25th largest county in Ohio. The 2010 population was 102,487 and has seen a growth of 8.83% since that time.

Note: data after 2022 is projected based on recent change
Year
Population
Growth
Change
2029114,8546630.58%
2028114,1916630.58%
2027113,5286630.59%
2026112,8656630.59%
2025112,2026630.59%
2024111,5396630.6%
2023110,8766630.6%
2022110,2138020.73%
2021109,4114520.41%
2020108,9591,9641.84%
2019106,9959040.85%
2018106,0918760.83%
2017105,2156620.63%
2016104,5534530.44%
2015104,1002240.22%
2014103,8766480.63%
2013103,2282810.27%
2012102,9472050.2%
2011102,7422550.25%
2010102,48700%
199093,1822,8013.1%
198090,3816,0397.16%
197084,34211,44115.69%
196072,90111,59218.91%
195061,3098,67716.49%
194052,6321,3312.59%
193051,3012,8735.93%
192048,4283,3817.51%
191045,0471,9424.51%
190043,1053,3518.43%
189039,7543,5969.95%
188036,1583,41810.44%
187032,7402,7819.28%
186029,9594,96019.84%
185024,9995,31126.98%
184019,6886,88153.73%
183012,8073,95644.7%
18208,8514,910124.59%
18103,941-110,913-96.57%
2024 Growth Rate
0.6% (663)
County Website
Miami County
State
Ohio
County Seat
Troy
2020 Population
108,959
Area
407 mi²
Density
274 people/mi²
Growth Since 2020
2.37% (2,580)
Founded
March 1, 1807

Population by Race

Race
Population
Percentage (of total)
White99,95591.86%
Two or more races4,2643.92%
Black or African American2,1982.02%
Asian1,7901.64%
Other race4820.44%
Native American1190.11%
Native Hawaiian or Pacific Islander100.01%

White

Two or more races

Black or African American

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

Miami County, Ohio Population by Race

Miami County, Ohio Population Pyramid 2024

Miami County, Ohio Median Age

41.1

Total

40.4

Male

41.8

Female

Miami County, Ohio Adults

There are 83,887 adults, (20,647 of whom are seniors) in Miami County, Ohio.

Miami County, Ohio Age Dependency

72.1

Age Dependency Ratio

32.6

Old Age Dependency Ratio

39.4

Child Dependency Ratio

Miami County, Ohio Sex Ratio

Female54,58650.16%
Male54,23249.84%

Miami County, Ohio Population by Age

Miami County, Ohio Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All44,1522.4473.426.6
Married23,7023.0786.913.1
Non Family14,5631.1758.241.8
Female4,0883.1353.246.8
Male1,7992.9165.634.4

3

Average Family Size

2.44

Average Household Size

73.4%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Miami County, Ohio Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade4,2665.66%
Associates Degree7,56910.04%
Bachelors Degree11,54015.31%
Graduate Degree7,0529.36%
High School Graduate27,97837.12%
Less Than 9th Grade1,1401.51%
Some College15,82220.99%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Miami County, Ohio Educational Attainment by Sex (over 25)

Miami County, Ohio Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White70,24465,49217,145
Black1,4751,222296
2+ Races1,3971,257319
Asian1,3501,255659
Hispanic1,123980251
Other Race28428442
Native American107658
Islander10100

The highest rate of high school graduation is among islander people with a rate of 100%.

The highest rate of bachelors degrees is among asian people with a rate of 48.81%.

Miami County, Ohio Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$70,544$83,438$50,827
Graduate Degree$80,474$100,069$68,285
High School Graduate$39,958$45,346$29,129
Less Than 9th Grade$23,382$46,004$15,984
Overall$47,725$58,211$38,194
Some College$46,779$63,403$35,855

$47,725

Average Earnings

$58,211

Average Male

$38,194

Average Female

Miami County, Ohio Earnings by Educational Attainment

Miami County, Ohio Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Miami County, Ohio Language

96.21% of Miami County, Ohio residents speak only English, while 3.79% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 1.41% of the population.

Miami County, Ohio Language

Miami County, Ohio Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White98,1307,6497.79%
Multiple4,24495222.43%
Black1,99929514.76%
Hispanic2,0971436.82%
Asian1,790703.91%
Other481224.57%
Islander1010100%

8.46%

Overall Poverty Rate

7.53%

Male Poverty Rate

9.38%

Female Poverty Rate

Poverty in Miami County, Ohio

The race most likely to be in poverty in Miami County, Ohio is Islander, with 100% below the poverty level.

The race least likely to be in poverty in Miami County, Ohio is Asian, with 3.91% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.7%. Among those working part-time, it was 12.5%, and for those that did not work, the poverty rate was 12.66%.

Miami County, Ohio Poverty

rate

Rate
Poverty
Less Than 9th Grade18.07%
High School8.87%
Some College5.49%
Bachelors or Greater1.68%

Miami County, Ohio Poverty Rate by Education

rate

Rate
Poverty
Female Unemployed26.11%
Male Unemployed20.26%
Female Employed6.33%
Male Employed3%

Miami County, Ohio Poverty Rate by Employment Status and Sex

Miami County, Ohio Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$92,126$108,449
Households$71,440$91,306
Married Families$102,824$120,302
Non Families$39,418$52,964

mean

median

Income by Household Type

Miami County, Ohio Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

55.8%

Overall Marriage Rate

56.5%

Male Marriage Rate

55.2%

Female Marriage Rate

Miami County, Ohio Married by Age and Sex

male

female

Miami County, Ohio Marriage

The age group where males are most likely to be married is 35-44, while the female age group most likely to be married is 35-44.

Miami County, Ohio Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Miami County, Ohio Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

6,670

Number of Veterans

6,275

Male Veterans

395

Female Veterans

War
Veterans
Vietnam2,135
First Gulf War1,649
Second Gulf War1,314
Korea245
World War II189

Miami County, Ohio Veterans by War

count

Age Group
Veterans
35 to 541,725
65 to 741,665
75+1,584
55 to 641,317
18 to 34379

Miami County, Ohio Veterans by Age

count

Name
Veterans
% of Total
White6,3118.12%
2+ Races1818.07%
Black1156.49%
Hispanic776.16%
Asian432.99%
Other Race133.74%
Native American76.54%

Miami County, Ohio Veterans by Race

Miami County, Ohio Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

4.53%

Veteran Poverty Rate

21.42%

Veteran Disability Rate

Miami County, Ohio Veterans by Education

LaborForceParticipation

65%

Labor Force Participation

62.5%

Employment Rate

3.4%

Unemployment Rate

Miami County, Ohio Employment by Age

LaborForceParticipation

Miami County, Ohio Employment by Race

LaborForceParticipation

Miami County, Ohio Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

79.38%

Born in Miami County, Ohio

96.98%

Native Born

3.02%

Foreign Born

1.15%

Non Citizen

1.87%

Naturalized

Place of Birth

96.98% of Miami County, Ohio residents were born in the United States, with 79.38% having been born in Ohio. 1.15% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Miami County, Ohio Place of Birth

Sources