Mercer County, Ohio Population 2024

42,454

Mercer County, Ohio's estimated 2024 population is 42,454 with a growth rate of 0.04% in the past year according to the most recent United States census data. Mercer County, Ohio is the 57th largest county in Ohio. The 2010 population was 40,791 and has seen a growth of 4.08% since that time.

Note: data after 2022 is projected based on recent change
Year
Population
Growth
Change
202942,529150.04%
202842,514150.04%
202742,499150.04%
202642,484150.04%
202542,469150.04%
202442,454150.04%
202342,439150.04%
202242,424320.08%
202142,392-150-0.35%
202042,5421,2873.12%
201941,2552690.66%
201840,986970.24%
201740,8891210.3%
201640,768330.08%
201540,735-4-0.01%
201440,7391160.29%
201340,623-87-0.21%
201240,710-10-0.02%
201140,720-71-0.17%
201040,79100%
199039,4431,1092.89%
198038,3343,0698.7%
197035,2652,7068.31%
196032,5594,24815%
195028,3112,0557.83%
194026,2561,1604.62%
193025,096-1,776-6.61%
192026,872-664-2.41%
191027,536-485-1.73%
190028,0218012.94%
189027,2205,41224.82%
188021,8084,55426.39%
187017,2543,15022.33%
186014,1046,39282.88%
18507,712-565-6.83%
18408,2777,167645.68%
18301,1101,0151068.42%
182095-42,434-99.78%
2024 Growth Rate
0.04% (15)
County Website
Mercer County
State
Ohio
County Seat
Celina
2020 Population
42,542
Area
462 mi²
Density
92 people/mi²
Growth Since 2020
-0.21% (-88)
Founded
January 2, 1824

Population by Race

Race
Population
Percentage (of total)
White40,30894.98%
Two or more races1,1562.72%
Other race4040.95%
Black or African American2980.7%
Asian2130.5%
Native Hawaiian or Pacific Islander360.08%
Native American230.05%

White

Two or more races

Other race

Black or African American

Asian

Native Hawaiian or Pacific Islander

Native American

Mercer County, Ohio Population by Race

Mercer County, Ohio Population Pyramid 2024

Mercer County, Ohio Median Age

39.1

Total

37.7

Male

40.9

Female

Mercer County, Ohio Adults

There are 31,337 adults, (7,903 of whom are seniors) in Mercer County, Ohio.

Mercer County, Ohio Age Dependency

81.1

Age Dependency Ratio

33.7

Old Age Dependency Ratio

47.4

Child Dependency Ratio

Mercer County, Ohio Sex Ratio

Female20,93749.34%
Male21,50150.66%

Mercer County, Ohio Population by Age

Mercer County, Ohio Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All16,2782.5779.620.4
Married9,1873.2790.69.4
Non Family5,4991.2466.333.7
Female9923.0654.545.5
Male6003.3775.224.8

3.18

Average Family Size

2.57

Average Household Size

79.6%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Mercer County, Ohio Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade1,2514.47%
Associates Degree3,47712.44%
Bachelors Degree3,96014.17%
Graduate Degree2,2347.99%
High School Graduate12,15243.47%
Less Than 9th Grade2410.86%
Some College4,64116.6%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

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

Mercer County, Ohio Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White26,73025,3065,670
2+ Races543528165
Hispanic405370183
Black235234116
Asian139122117
Other Race122122101
Native American23230
Islander17170

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

The highest rate of bachelors degrees is among asian people with a rate of 84.17%.

Mercer County, Ohio Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$58,438$90,044$49,053
Graduate Degree$69,268$77,057$66,677
High School Graduate$43,663$53,419$32,201
Less Than 9th Grade$23,497$24,438$16,875
Overall$50,056$59,217$41,437
Some College$50,273$60,813$40,746

$50,056

Average Earnings

$59,217

Average Male

$41,437

Average Female

Mercer County, Ohio Earnings by Educational Attainment

Mercer County, Ohio Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Mercer County, Ohio Language

98.06% of Mercer County, Ohio residents speak only English, while 1.94% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 0.96% of the population.

Mercer County, Ohio Language

Mercer County, Ohio Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White39,3802,3255.9%
Black2878830.66%
Multiple1,059858.03%
Hispanic825293.52%
Asian209188.61%
Native231043.48%

6.14%

Overall Poverty Rate

5.65%

Male Poverty Rate

6.63%

Female Poverty Rate

Poverty in Mercer County, Ohio

The race most likely to be in poverty in Mercer County, Ohio is Native, with 43.48% below the poverty level.

The race least likely to be in poverty in Mercer County, Ohio is Hispanic, with 3.52% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1%. Among those working part-time, it was 8.71%, and for those that did not work, the poverty rate was 12.49%.

Mercer County, Ohio Poverty

rate

Rate
Poverty
Less Than 9th Grade21.2%
High School7.7%
Some College4.35%
Bachelors or Greater2.31%

Mercer County, Ohio Poverty Rate by Education

rate

Rate
Poverty
Female Unemployed41.53%
Male Unemployed6.1%
Female Employed3.46%
Male Employed2.4%

Mercer County, Ohio Poverty Rate by Employment Status and Sex

Mercer County, Ohio Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$100,194$106,729
Households$78,036$90,650
Married Families$107,556$-999,999,999
Non Families$43,963$56,145

mean

median

Income by Household Type

Mercer County, Ohio Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

56.5%

Overall Marriage Rate

55.8%

Male Marriage Rate

57.2%

Female Marriage Rate

Mercer County, Ohio Married by Age and Sex

male

female

Mercer County, Ohio Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 35-44.

Mercer County, Ohio Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Mercer County, Ohio Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

1,805

Number of Veterans

1,731

Male Veterans

74

Female Veterans

War
Veterans
Vietnam783
First Gulf War255
Korea190
Second Gulf War133
World War II26

Mercer County, Ohio Veterans by War

count

Age Group
Veterans
75+737
65 to 74436
55 to 64378
35 to 54202
18 to 3452

Mercer County, Ohio Veterans by Age

count

Name
Veterans
% of Total
White1,7875.96%
Hispanic274.4%
Other Race124.67%
Asian53.09%
2+ Races10.17%

Mercer County, Ohio Veterans by Race

Mercer County, Ohio Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

6.82%

Veteran Poverty Rate

35.41%

Veteran Disability Rate

Mercer County, Ohio Veterans by Education

LaborForceParticipation

68%

Labor Force Participation

66.7%

Employment Rate

1.8%

Unemployment Rate

Mercer County, Ohio Employment by Age

LaborForceParticipation

Mercer County, Ohio Employment by Race

LaborForceParticipation

Mercer 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

88.1%

Born in Mercer County, Ohio

98.71%

Native Born

1.29%

Foreign Born

0.92%

Non Citizen

0.37%

Naturalized

Place of Birth

98.71% of Mercer County, Ohio residents were born in the United States, with 88.1% having been born in Ohio. 0.92% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Mercer County, Ohio Place of Birth

Sources