| Chelsea - Occupational Data | FIPS Code=17020 |
| 1970 | |
| Employed Population | 361 |
| Professional - Technical - Kindred | 23 |
| Non-Farm Manager - Administrator | 46 |
| Sales Worker | 9 |
| Clerical Worker | 51 |
| Craftsperson - Foreperson | 64 |
| Non-Transport Operative | 66 |
| Transport Operative | 0 |
| Non-Farm Laborer | 16 |
| Farmer - Farm Manager | 52 |
| Farm Laborer | 5 |
| Non-Private Service | 20 |
| Household Service | 0 |
| Occupation Not Reported | 9 |
| 1980 | 1990 | |
| Employed Population | 482 | 539 |
| Executive - Administrator | 24 | 50 |
| Professional Speciality | 71 | 56 |
| Technicians - Related Support | 13 | 8 |
| Sales | 17 | 36 |
| Administrative - Clerical | 60 | 66 |
| Private Household Service | 7 | 6 |
| Protective Service | 2 | 10 |
| Non-Household, Non-Protective Service | 43 | 67 |
| Natural Resources | 88 | 48 |
| Precision Production - Craft | 68 | 107 |
| Machine Operators | 60 | 41 |
| Mover | 18 | 23 |
| Labor | 11 | 21 |
| 1980 | 1990 | ||
| Per Cent of Working Population Employed in Town of Residence | 50.98 | 50.70 | |
| 1970 | 1980 | 1990 | |
| Unemployment Rate | 4.67 | 5.49 | 8.64 |