Guernsey County's estimated 2026 population is 38,429 with a growth rate of 0.13% in the past year according to the most recent United States census data. Guernsey County is the 64th largest county in Ohio. The 2010 population was 40,152 and has seen a growth of -4.29% since that time.
Data after 2023 is projected based on recent change
Overall: 42.9 years
Female: 43.7 years
Male: 41.5 years
There are 29,768 adults, (7,664 of whom are seniors) in Guernsey County.
Female: 19,206 (50.2%)
Male: 19,017 (49.8%)
The racial composition of Guernsey County includes 93.82% White, and smaller percentages for Black or African American, other race, Asian, Native American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 35,860 | 93.82% |
| Two or more races | 1,297 | 3.39% |
| Black or African American | 754 | 1.97% |
| Other race | 171 | 0.45% |
| Asian | 132 | 0.35% |
| Native American | 9 | 0.02% |
Guernsey County's average per capita income is $43,498. Household income levels show a median of $58,478. The poverty rate stands at 15.31%.
Name | Median | Mean |
|---|---|---|
| Married Families | $81,536 | $103,332 |
| Families | $73,104 | $89,061 |
| Households | $58,478 | $75,252 |
| Non Families | $33,785 | $47,797 |
Average Income
Median Household Income
Poverty Rate
