The list is the FIPS codes of New Hampshire counties. All the FIPS codes are starting with 33.
| County | FIPS Code |
| Belknap | 33001 |
| Carroll | 33003 |
| Cheshire | 33005 |
| Coos | 33007 |
| Grafton | 33009 |
| Hillsborough | 33011 |
| Merrimack | 33013 |
| Rockingham | 33015 |
| Strafford | 33017 |
| Sullivan | 33019 |
All codes are cited from United States Department of Agriculture [28].