Sullivan County IN United States
| County FIPS | 18153 |
| Largest City | Sullivan |
| State | Indiana |
| Latitude | 39.0889 |
| Longitude | -87.4147 |
| Population | 20,780 |
| Density | 46.48 people per square mile |
| Time Zone | America/Indiana/Indianapolis |
Median household: $56,204
Median individual: $31,160
Mode: 90.7% White
Median house value: $124,883.0
Median: 41.7 years old
With at least college degree: 14.5%
With STEM degree: 44.0%
Never married: 28.3%
Unemployed: 4.4%
All data comes from the SimpleMaps US Counties Database, 2026.
Home (Maps) | Database License | Privacy | Database Releases | Database Order Lookup | Resources | Contact | FAQs
SimpleMaps.com is a product of Pareto Software, LLC. © 2010-2026.