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World Population Review
Seneca County, Ohio Population 2021
Seneca County, Ohio's estimated population is 55,146 with a growth rate of -0.03% in the past year according to the most recent United States census data. Seneca County, Ohio is the 48th largest county in Ohio. The 2010 Population was 56,618 and has seen a growth of -2.60% since this time.
Note: 2020 and 2021 data is projected
| Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2021 | 55,146 | -16 | -0.03% |
| 2020 | 55,162 | -16 | -0.03% |
| 2019 | 55,178 | -16 | -0.03% |
| 2018 | 55,194 | -73 | -0.13% |
| 2017 | 55,267 | -200 | -0.36% |
| 2016 | 55,467 | -183 | -0.33% |
| 2015 | 55,650 | -153 | -0.27% |
| 2014 | 55,803 | -44 | -0.08% |
| 2013 | 55,847 | -259 | -0.46% |
| 2012 | 56,106 | -416 | -0.74% |
| 2011 | 56,522 | -96 | -0.17% |
| 2010 | 56,618 | -3,115 | -5.21% |
| 1990 | 59,733 | -2,168 | -3.50% |
| 1980 | 61,901 | 1,205 | 1.99% |
| 1970 | 60,696 | 1,370 | 2.31% |
| 1960 | 59,326 | 6,348 | 11.98% |
| 1950 | 52,978 | 4,479 | 9.24% |
| 1940 | 48,499 | 558 | 1.16% |
| 1930 | 47,941 | 4,765 | 11.04% |
| 1920 | 43,176 | 755 | 1.78% |
| 1910 | 42,421 | 1,258 | 3.06% |
| 1900 | 41,163 | 294 | 0.72% |
| 1890 | 40,869 | 3,922 | 10.62% |
| 1880 | 36,947 | 6,120 | 19.85% |
| 1870 | 30,827 | -41 | -0.13% |
| 1860 | 30,868 | 3,764 | 13.89% |
| 1850 | 27,104 | 8,976 | 49.51% |
| 1840 | 18,128 | 12,969 | 251.39% |
| 1830 | 5,159 | 0.00% |
2021 Growth Rate
-0.03%
County Website
State
Founded
April 1, 1824
County Seat
Lat./Long.
2010 Population
56,618
Growth Since 2010
-2.60%
Seneca County, Ohio Population Growth
| Race | Population | Percentage |
|---|---|---|
| White | 51,886 | 93.74% |
| Black or African American | 1,716 | 3.10% |
| Two or More Races | 961 | 1.74% |
| Asian | 344 | 0.62% |
| Some Other Race | 339 | 0.61% |
| American Indian and Alaska Native | 105 | 0.19% |
Seneca County, Ohio Population by Race
Seneca County, Ohio Population Pyramid $2021
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Seneca County, Ohio Population by Age
Seneca County, Ohio Households and Families
| Type | Count | Average Size | Owned |
|---|---|---|---|
| All | 21,648 | 2.41 | 72.3 |
| Married | 10,350 | 2.98 | 87.8 |
| Non Family | 7,509 | 1.24 | 61.8 |
| Female | 2,336 | 3.16 | 47.4 |
| Male | 1,453 | 3.24 | 55.3 |
2.91
Average Family Size
2.41
Average Household Size
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Seneca County, Ohio Households by Type
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| Education Attained | Count | Percentage |
|---|---|---|
| Less Than 9th Grade | 781 | 2.10% |
| 9th to 12th Grade | 2,302 | 6.18% |
| High School Graduate | 16,836 | 45.23% |
| Some College | 7,389 | 19.85% |
| Associates Degree | 3,651 | 9.81% |
| Bachelors Degree | 3,887 | 10.44% |
| Graduate Degree | 2,374 | 6.38% |
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Seneca County, Ohio Educational Attainment by Sex (over 25)
Seneca County, Ohio Educational Attainment by Race
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| Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 34,533 | 31,981 | 5,881 |
| Hispanic | 1,419 | 1,159 | 153 |
| Black | 801 | 624 | 64 |
| 2+ Races | 253 | 253 | 73 |
| Asian | 247 | 161 | 96 |
| Other Race | 211 | 129 | |
| Native American | 56 | 48 | 10 |
The highest rate of high school graduation is among 2+ races people with a rate of 100.00%.
The highest rate of bachelors degrees is among asian people with a rate of 38.87%.
Seneca County, Ohio Educational Attainment by Race
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$35,038
Average Earnings
$41,921
Average Male
$27,756
Average Female
Seneca County, Ohio Earnings by Educational Attainment
Seneca County, Ohio Language by Age
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Seneca County, Ohio Language
96.14% of Seneca County, Ohio residents speak only English, while 3.86% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 2.22% of the population.
Seneca County, Ohio Language
Seneca County, Ohio Poverty by Race
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| Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| White | 47,189 | 5,159 | 10.93% |
| Black | 1,239 | 639 | 51.57% |
| Hispanic | 2,578 | 501 | 19.43% |
| Multiple | 868 | 282 | 32.49% |
| Asian | 312 | 155 | 49.68% |
| Native | 105 | 36 | 34.29% |
| Other | 254 | 35 | 13.78% |
12.81%
Overall Poverty Rate
10.61%
Male Poverty Rate
15.02%
Female Poverty Rate
Poverty in Seneca County, Ohio
The race most likely to be in poverty in Seneca County, Ohio is Black, with 51.57% below the poverty level.
The race least likely to be in poverty in Seneca County, Ohio is White, with 10.93% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 2.47%. Among those working part-time, it was 15.56%, and for those that did not work, the poverty rate was 20.51%.
Seneca County, Ohio Poverty
Seneca County, Ohio Poverty Rate by Education
Seneca County, Ohio Marital Status
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Marriage Rates
47.3%
Overall Marriage Rate
47.4%
Male Marriage Rate
47.3%
Female Marriage Rate
Seneca County, Ohio Married by Age and Sex
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Seneca 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 55-64.
Seneca County, Ohio Marital Status by Race
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Seneca County, Ohio Marital Status
Seneca County, Ohio Veterans by War
Seneca County, Ohio Veterans by Age
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| Name | Veterans | % of Total |
|---|---|---|
| White | 3,504 | 8.60% |
| Hispanic | 108 | 5.92% |
| Native American | 39 | 42.39% |
| 2+ Races | 24 | 4.92% |
| Other Race | 22 | 8.24% |
| Black | 10 | 0.79% |
Seneca County, Ohio Veterans by Race
Seneca County, Ohio Veterans by Education
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8.42%
Veteran Poverty Rate
29.60%
Veteran Disability Rate
Seneca County, Ohio Veterans by Education
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62.7%
Labor Force Participation
60%
Employment Rate
4.4%
Unemployment Rate
Seneca County, Ohio Employment by Age
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Seneca County, Ohio Employment by Race
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Seneca County, Ohio Employment by Education
Origin of Non-Citizens
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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Origin of Naturalized Citizens
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98.08%
Native Born
1.92%
Foreign Born
1.10%
Non Citizen
0.82%
Naturalized
Place of Birth
98.08% of Seneca County, Ohio residents were born in the United States, with 86.56% having been born in Ohio. 1.10% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.
Seneca County, Ohio Place of Birth
- US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
- Population of States and Counties of the United States: 1790 - 1990