| Groton - Occupational Data | FIPS Code=05020 |
| 1970 | |
| Employed Population | 220 |
| Professional - Technical - Kindred | 13 |
| Non-Farm Manager - Administrator | 31 |
| Sales Worker | 11 |
| Clerical Worker | 10 |
| Craftsperson - Foreperson | 52 |
| Non-Transport Operative | 36 |
| Transport Operative | 8 |
| Non-Farm Laborer | 9 |
| Farmer - Farm Manager | 4 |
| Farm Laborer | 26 |
| Non-Private Service | 16 |
| Household Service | 0 |
| Occupation Not Reported | 4 |
| 1980 | 1990 | |
| Employed Population | 329 | 348 |
| Executive - Administrator | 10 | 28 |
| Professional Speciality | 26 | 56 |
| Technicians - Related Support | 0 | 11 |
| Sales | 32 | 39 |
| Administrative - Clerical | 34 | 28 |
| Private Household Service | 5 | 0 |
| Protective Service | 2 | 5 |
| Non-Household, Non-Protective Service | 48 | 38 |
| Natural Resources | 39 | 13 |
| Precision Production - Craft | 60 | 65 |
| Machine Operators | 37 | 47 |
| Mover | 19 | 10 |
| Labor | 17 | 8 |
| 1980 | 1990 | ||
| Per Cent of Working Population Employed in Town of Residence | 27.36 | 18.00 | |
| 1970 | 1980 | 1990 | |
| Unemployment Rate | 3.08 | 9.37 | 9.14 |