| Middlebury - Occupational Data | FIPS Code=1055 |
| 1970 | |
| Employed Population | 2655 |
| Professional - Technical - Kindred | 578 |
| Non-Farm Manager - Administrator | 203 |
| Sales Worker | 143 |
| Clerical Worker | 463 |
| Craftsperson - Foreperson | 229 |
| Non-Transport Operative | 176 |
| Transport Operative | 69 |
| Non-Farm Laborer | 56 |
| Farmer - Farm Manager | 36 |
| Farm Laborer | 22 |
| Non-Private Service | 538 |
| Household Service | 58 |
| Occupation Not Reported | 84 |
| 1980 | 1990 | |
| Employed Population | 3469 | 4072 |
| Executive - Administrator | 298 | 446 |
| Professional Speciality | 583 | 880 |
| Technicians - Related Support | 68 | 127 |
| Sales | 375 | 322 |
| Administrative - Clerical | 489 | 628 |
| Private Household Service | 37 | 41 |
| Protective Service | 30 | 11 |
| Non-Household, Non-Protective Service | 744 | 712 |
| Natural Resources | 117 | 117 |
| Precision Production - Craft | 308 | 333 |
| Machine Operators | 279 | 217 |
| Mover | 46 | 135 |
| Labor | 95 | 103 |
| 1980 | 1990 | ||
| Per Cent of Working Population Employed in Town of Residence | 70.83 | 80.5 | |
| 1970 | 1980 | 1990 | |
| Unemployment Rate | 3.6 | 2.91 | 4.01 |