The 2016 Sidney, Ohio, population is 20,858. There are 1,749 people per square mile (population density).
The median age is 37.7. The US median is 37.4. 50.53% of people in Sidney, Ohio, are married. 14.47% are divorced.
The average household size is 2.47 people. 26.87% of people are married, with children. 23.30% have children, but are single.
88.11% of people are white, 5.11% are black, 1.23% are asian, 0.34% are native american, and 0.00% claim 'Other'.
2.67% of the people in Sidney, Ohio, claim hispanic ethnicity (meaning 97.33% are non-hispanic).
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