| Marshfield - Educational Attainment | FIPS Code=23045 |
| 1970 | 1980 | 1990 | |
| Per Cent of Individuals Ages 25 and Older without a High School Diploma | 41.06 | 26.90 | 17.80 |
| Per Cent of Individuals Ages 25 and Older with a High School Diploma or Equivalent | 37.69 | 35.80 | 37.10 |
| Per Cent of Individuals Ages 25 and Older with a Bachelor's Degree or Some College | 7.25 | 14.10 | 21.10 |
| Per Cent of Individuals Ages 25 and Older with a Doctorate, Professional or Master's Degree | 13.98 | 23.20 | 24.00 |