| Chelsea - Educational Attainment | FIPS Code=17020 |
| 1970 | 1980 | 1990 | |
| Per Cent of Individuals Ages 25 and Older without a High School Diploma | 46.45 | 27.30 | 23.60 |
| Per Cent of Individuals Ages 25 and Older with a High School Diploma or Equivalent | 34.63 | 42.50 | 44.60 |
| Per Cent of Individuals Ages 25 and Older with a Bachelor's Degree or Some College | 9.29 | 15.40 | 16.10 |
| Per Cent of Individuals Ages 25 and Older with a Doctorate, Professional or Master's Degree | 9.63 | 14.90 | 15.70 |