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)
White99,89991.19%
Two or more races4,8314.41%
Black or African American2,2612.06%
Asian1,8611.7%
Other race6220.57%
Native American670.06%
Native Hawaiian or Pacific Islander80.01%

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

40.2

Male

42

Female

Miami County, Ohio Adults

There are 84,308 adults, (20,978 of whom are seniors) in Miami County, Ohio.

Miami County, Ohio Age Dependency

73

Age Dependency Ratio

33.1

Old Age Dependency Ratio

39.9

Child Dependency Ratio

Miami County, Ohio Sex Ratio

Female55,05450.26%
Male54,49549.74%

Miami County, Ohio Population by Age

Miami County, Ohio Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All44,5622.4473.426.6
Married23,3843.0987.112.9
Non Family15,0431.1658.141.9
Female4,2323.1355.444.6
Male1,9032.9966.633.4

3.01

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 Grade4,3675.73%
Associates Degree7,92010.4%
Bachelors Degree11,31714.86%
Graduate Degree7,66310.06%
High School Graduate28,85337.89%
Less Than 9th Grade1,1111.46%
Some College14,92219.59%

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
White70,47865,72417,440
2+ Races1,8701,652407
Black1,5901,343302
Asian1,2861,188645
Hispanic1,2481,103327
Other Race41137539
Native American59577
Islander880

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 50.16%.

Miami County, Ohio Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$71,792$86,200$53,859
Graduate Degree$83,292$110,855$68,068
High School Graduate$41,058$45,872$30,317
Less Than 9th Grade$25,521$41,939$16,832
Overall$49,477$59,447$39,690
Some College$48,155$62,481$36,629

$49,477

Average Earnings

$59,447

Average Male

$39,690

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

96.46% of Miami County, Ohio residents speak only English, while 3.54% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 1.5% of the population.

Miami County, Ohio Language

Miami County, Ohio Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White98,2467,5947.73%
Multiple4,8121,17524.42%
Black2,08338318.39%
Hispanic2,2881386.03%
Asian1,861824.41%
Other620264.19%
Islander88100%

8.62%

Overall Poverty Rate

8.08%

Male Poverty Rate

9.15%

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 Other, with 4.19% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.46%. Among those working part-time, it was 12.74%, and for those that did not work, the poverty rate was 14.11%.

Miami County, Ohio Poverty

rate

Rate
Poverty
Less Than 9th Grade24.31%
High School10.07%
Some College5.55%
Bachelors or Greater1.49%

Miami County, Ohio Poverty Rate by Education

rate

Rate
Poverty
Female Unemployed24.33%
Male Unemployed21.67%
Female Employed5.63%
Male Employed3.06%

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$95,196$111,685
Households$74,175$94,300
Married Families$104,341$123,307
Non Families$41,432$56,455

mean

median

Income by Household Type

Miami County, Ohio Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

54.7%

Overall Marriage Rate

55.6%

Male Marriage Rate

53.9%

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 45-54, 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

6,514

Number of Veterans

6,081

Male Veterans

433

Female Veterans

War
Veterans
Vietnam2,215
First Gulf War1,678
Second Gulf War1,438
Korea250
World War II135

Miami County, Ohio Veterans by War

count

Age Group
Veterans
65 to 741,729
75+1,658
35 to 541,577
55 to 641,186
18 to 34364

Miami County, Ohio Veterans by Age

count

Name
Veterans
% of Total
White6,0297.77%
2+ Races2047.87%
Black1618.97%
Asian916.06%
Hispanic453.36%
Other Race275.78%
Native American23.39%

Miami County, Ohio Veterans by Race

Miami County, Ohio Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

4.26%

Veteran Poverty Rate

20.49%

Veteran Disability Rate

Miami County, Ohio Veterans by Education

LaborForceParticipation

64.3%

Labor Force Participation

61.6%

Employment Rate

3.6%

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

80.29%

Born in Miami County, Ohio

97.1%

Native Born

2.9%

Foreign Born

1.14%

Non Citizen

1.76%

Naturalized

Place of Birth

97.1% of Miami County, Ohio residents were born in the United States, with 80.29% having been born in Ohio. 1.14% 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