| Business | Phone |
| City Council 955 School St, Napa 94559 | (707) 257-9503 |
| Napa City Finance 955 School St, Napa 94559 | (707) 257-9510 |
| Napa Personnel 1541 2nd St, Napa 94559 | (707) 257-9505 |
| Napa Planning Dept 1600 1st St, Napa 94559 | (707) 257-9530 |
| Napa Water Div 770 Jackson St, Napa 94559 | (707) 257-9523 |
| Equipment Maintenance Shop 770 Jackson St, Napa 94559 | (707) 257-9525 |
| Las Flores Community Center 4300 Linda Vista Ave, Napa 94558 | (707) 254-9985 |
| Napa City Code Enforcement 1600 1st St, Napa 94559 | (707) 257-9646 |
| Napa City Data Processing 955 School St, Napa 94559 | (707) 257-9512 |
| Napa City Manager's Office 955 School St, Napa 94559 | (707) 257-9501 |
| Napa City Purchasing 770 Jackson St, Napa 94559 | (707) 257-9515 |
| Napa Personnel 955 School St, Napa 94559 | (707) 257-9505 |
| Napa Recycling Information 955 School St, Napa 94559 | (707) 257-9292 |
| Napa Water Adm Engineering 1600 1st St, Napa 94559 | (707) 257-9520 |
| Napa Water Div 1340 Clay St, Napa 94559 | (707) 257-9521 |
| Senior Citizens Center 1500 Jefferson St, Napa 94559 | (707) 255-1800 |