| 911 Emergency | | 911 |
| Arbuckle Fire Department | | 530-476-2231 |
| Arbuckle Police Department | | 530-476-2231 |
| California Highway Patrol | Willows Branch | | 530-934-5424 |
| California Poison Control | | 800-876-4766 |
| Colusa Building Permits | | 530-458-5890 |
| Colusa Chamber of Commerce | | 530-458-5525 |
| Colusa City Attorney | | 530-458-5481 |
| Colusa City Mayor | | 530-458-4740 |
| Colusa City Offices Information | | 530-458-4740 |
| Colusa City Parks & Recreation | | 530-458-5622 |
| Colusa City Street Maintenance | | 530-458-4740 |
| Colusa City Water Department | | 530-458-4740 |
| Colusa County Animal Control | | 530-458-0229 |
| Colusa County Assessor's Office | | 530-458-0450 |
| Colusa County Birth Certificates & Marriage Licenses | | 530-458-0500 |
| Colusa County District Attorney | | 530-458-0545 |
| Colusa County Health Department | | 530-458-0380 |
| Colusa County Jail | | 530-458-0203 |
| Colusa County Municipal Court | | 530-458-5149 |
| Colusa County Offices Information | | 530-458-0500 |
| Colusa County Sheriff's Department | | 530-458-0200 |
| Colusa County Superior Court Judge | | 530-458-0430 |
| Colusa Fire Department | | 530-458-7721 |
| Colusa Police Department | | 530-458-7777 |
| Glenn County Agricultural Commissioner | | 530-934-6501 |
| Glenn County Air Pollution Control District | | 530-934-6500 |
| Glenn County Animal Control | | 530-934-6507 |
| Glenn County Assessor's Office | | 530-934-6402 |
| Glenn County Building Inspector | | 530-934-6546 |
| Glenn County Buildings & Grounds | | 530-934-6545 |
| Glenn County Child Protective Services | | 530-934-6520 |
| Glenn County Counsel | | 530-934-6455 |
| Glenn County Department of Child Support Services | | 530-934-6527 |
| Glenn County Department of Finance | | 530-934-6476 |
| Glenn County District Attorney | | 530-934-6525 |
| Glenn County Elections | | 530-934-6414 |
| Glenn County Farm & 4H Advisor's Office | | 530-865-1107 |
| Glenn County Fire Department | North | | 530-865-1625 |
| | South | | 530-934-3323 |
| Glenn County Human Resource Agency | | 530-934-6510 |
| Glenn County Office of Emergency Services | | 530-934-6442 |
| Glenn County Personnel Department | | 530-934-6451 |
| Glenn County Planning Department | | 530-934-6451 |
| Glenn County Public Health Department | | 530-934-6588 |
| Glenn County Public Works & Development Services Agency | | 530-934-6530 |
| Glenn County Recorder & Clerk | | 530-934-6412 |
| Glenn County Sheriff's Department | | 530-934-6442 |
| Glenn County Superintendent of Schools | | 530-934-6575 |
| Glenn County Supervisors | | 530-934-6400 |
| Glenn County Tax Collector | | 530-934-6410 |
| Glenn County Transit Service | | 888-800-7433 |
| Glenn County Veterans Service Officer | | 530-934-6524 |
| Glenn Medical Center | | 530-934-8612 |
| Glenn Medical Children's Center | | 530-934-4005 |
| Maxwell Fire Department | | 530-438-2320 |
| Maxwell Water Department | | 530-438-2505 |
| Princeton Fire Department | | 530-439-2235 |
| Tri Counties Newpaper | | 530-934-6800 |
| Valley Mirror | | 530-934-9511 |
| Williams Building Permits | | 530-473-2948 |
| Williams City Mayor | | 530-473-5389 |
| Williams City Offices Information | | 530-473-5389 |
| Williams City Parks & Recreation | | 530-473-2948 |
| Williams City Street Maintenance | | 530-473-5389 |
| Williams Fire Department | | 530-473-2269 |
| Williams Police Department | | 530-473-2661 |
| Williams Water Department | | 530-473-5389 |
| Willows Airport | | 530-934-6489 |
| Willows Building Department | | 530-934-3323 |
| Willows Cemetery District | | 530-934-7331 |
| Willows City Hall | | 530-934-7041 |
| Willows Fire Department | | 530-934-3323 |
| Willows Library | | 530-934-5156 |
| Willows Parks & Public Works Department | | 530-934-7041 |
| Willows Police Department | | 530-934-3456 |
| Willows Public Swimming Pool | | 530-934-9922 |
| Willows Recreation Department | | 530-934-7043 |
| Willows Sewer Emergencies | After Hrs & Weekends | | 530-934-3323 |
| | Weekdays | | 530-934-7041 |
