| Cornwall - Occupational Data | FIPS Code=1020 |
| 1970 | |
| Employed Population | 390 |
| Professional - Technical - Kindred | 64 |
| Non-Farm Manager - Administrator | 38 |
| Sales Worker | 25 |
| Clerical Worker | 56 |
| Craftsperson - Foreperson | 57 |
| Non-Transport Operative | 35 |
| Transport Operative | 6 |
| Non-Farm Laborer | 4 |
| Farmer - Farm Manager | 42 |
| Farm Laborer | 18 |
| Non-Private Service | 17 |
| Household Service | 24 |
| Occupation Not Reported | 4 |
| 1980 | 1990 | |
| Employed Population | 482 | 579 |
| Executive - Administrator | 49 | 73 |
| Professional Speciality | 92 | 115 |
| Technicians - Related Support | 9 | 16 |
| Sales | 52 | 62 |
| Administrative - Clerical | 54 | 96 |
| Private Household Service | 6 | 2 |
| Protective Service | 0 | 0 |
| Non-Household, Non-Protective Service | 32 | 40 |
| Natural Resources | 32 | 40 |
| Precision Production - Craft | 61 | 51 |
| Machine Operators | 31 | 36 |
| Mover | 20 | 17 |
| Labor | 11 | 15 |
| 1980 | 1990 | ||
| Per Cent of Working Population Employed in Town of Residence | 22.24 | 22.6 | |
| 1970 | 1980 | 1990 | |
| Unemployment Rate | 2.07 | 3.41 | 3.82 |