| Area | 147,181 Sq. Kms. |
| Population | 29 million |
| Rural/Urban Ratio | 85/15 |
| Christians | 2 million |
| Catholics | 7.371 |
| Life Expectation (2001) | 59.7 |
| Population Growth | 2.24% |
| Age at first marriage (women) | 17.1 years |
| Average household | 5.45 members |
| Adult Literacy | 53.74% |
| Men | 65.08% |
| Women | 42.49% |
| Children (0-14) | 41.3% |
| M/F Ratio | 998/1000 |
| Economy | Agricultural |
| Languages | Nepali, Bhojpuri, Maithili, Newari, Tharu, Tamang, Hindi |
| Parishes | 8 |
| Quasi Parishes | 2 |
| Mission Stations | 10 |
| Mission Sub-Stations | 24 |
| Priests – Vicariate | 16 |
| Religious | 60 |
| Congregations of Men | 7 |
| Congregations of Women | 18 |
| Religious Brothers | 12 |
| Religious Sisters | 165 |
| Minor Seminaries | 2 |
| Minor Seminarians – Vicariate | 10 |
| Major Seminarians – Prefecture | 5 |
| Convents | 40 |
| Day Care Centres | 10 |
| Pre-School Programme | 22 |
| Primary Schools | 9 |
| High Schools | 18 |
| Intermediate Colleges | 4 |
| Colleges | 1 |
| Catholic Information Centre | 1 |
| Vicariate Laity Organizations | 5 |
| Literacy Programmes (villages) | 10 |
| Women’s Associations | 1 |
| Youth Associations | 3 |
| Rehabilitation Centres | 4 |
| Centres for mentally challenged children | 3 |
| Homes for the poor and destitute | 3 |
| Boarding for girls | 7 |
| Boarding for boys | 4 |
| Vocational Training Centres | 2 |