| Fairfield - Occupational Data | FIPS Code=11030 |
| 1970 | |
| Employed Population | 417 |
| Professional - Technical - Kindred | 32 |
| Non-Farm Manager - Administrator | 11 |
| Sales Worker | 9 |
| Clerical Worker | 64 |
| Craftsperson - Foreperson | 69 |
| Non-Transport Operative | 51 |
| Transport Operative | 9 |
| Non-Farm Laborer | 22 |
| Farmer - Farm Manager | 62 |
| Farm Laborer | 47 |
| Non-Private Service | 31 |
| Household Service | 0 |
| Occupation Not Reported | 10 |
| 1980 | 1990 | |
| Employed Population | 636 | 813 |
| Executive - Administrator | 29 | 42 |
| Professional Speciality | 37 | 98 |
| Technicians - Related Support | 14 | 36 |
| Sales | 39 | 54 |
| Administrative - Clerical | 56 | 95 |
| Private Household Service | 10 | 2 |
| Protective Service | 0 | 3 |
| Non-Household, Non-Protective Service | 46 | 62 |
| Natural Resources | 217 | 180 |
| Precision Production - Craft | 69 | 111 |
| Machine Operators | 72 | 59 |
| Mover | 26 | 34 |
| Labor | 21 | 37 |
| 1980 | 1990 | ||
| Per Cent of Working Population Employed in Town of Residence | 32.68 | 35.70 | |
| 1970 | 1980 | 1990 | |
| Unemployment Rate | 6.42 | 4.65 | 2.91 |