Johnson County IN United States
| County FIPS | 18081 |
| Largest City | Greenwood |
| State | Indiana |
| Latitude | 39.4900 |
| Longitude | -86.1016 |
| Population | 166,315 |
| Density | 519.2 people per square mile |
| Time Zone | America/Indiana/Indianapolis |
Median household: $90,454
Median individual: $44,125
Mode: 84.6% White
Median house value: $284,494.0
Median: 38.0 years old
With at least college degree: 34.7%
With STEM degree: 47.7%
Never married: 28.0%
Unemployed: 3.0%
All data comes from the SimpleMaps US Counties Database, 2026.
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