| 311 Customer Care Center | 150 Central Park Square | Los Alamos | 87544 |
| Accounts Payable | 2300 Trinity Dr.
Suite A | Los Alamos | 87544 |
| Affordable Housing | 2300 Trinity Dr.
Suite A | Los Alamos | 87544 |
| Airport | 1040 Airport Rd. | Los Alamos | 87544 |
| Animal Control | 226 East Rd. | Los Alamos | 87544 |
| Animal Shelter | 226 East Rd. | Los Alamos | 87544 |
| Betty Ehart Senior Center | 1000 Oppenheimer St. | Los Alamos | 87544 |
| Building Permits | 195 East Rd., Suite 104 | Los Alamos | 87544 |
| Business Licenses | 195 East Rd., Suite 104 | Los Alamos | 87544 |
| Cashiering | 150 Central Park Square | Los Alamos | 87544 |
| Cemetery Maintenance | 101 Airport Basin Rd., Building 5D | Los Alamos | 87544 |
| Code Enforcement | 195 East Rd., Suite 104 | Los Alamos | 87544 |
| Communications & Public Relations | 133 Central Park Square | Los Alamos | 87544 |
| Community Development Department | 195 East Rd., Suite 104 | Los Alamos | 87544 |
| Community Services Department | 2400 Central Ave. | Los Alamos | 87544 |
| Cooperative Extension Services | 475 20th St. | Los Alamos | 87544 |
| County Administrator | 133 Central Park Square | Los Alamos | 87544 |
| County Assessor | 2300 Trinity Dr.
Suite D | Los Alamos | 87544 |
| County Attorney | 475 20th St. | Los Alamos | 87544 |
| County Clerk | 2300 Trinity Dr.
Suite C | Los Alamos | 87544 |
| County Council | 133 Central Park Square | Los Alamos | 87544 |
| County Facilities Room Rental | 2132 Central Ave. | Los Alamos | 87544 |
| County Sheriff | 2500 Trinity Dr. | Los Alamos | 87544 |
| Crime Prevention | 2500 Trinity Dr. | Los Alamos | 87544 |
| Crime Stoppers | 2500 Trinity Dr. | Los Alamos | 87544 |
| Department of Public Utilities | 170 Central Park Square (administration)
150 Central Park Square (311 Customer Care Center, Public Relations) | Los Alamos | 87544 |
| Economic Development | 133 Central Park Square | Los Alamos | 87544 |
| Engineering | 1925 Trinity Dr. | Los Alamos | 87544 |
| Fire Department Administration | 195 East Road Ste. 104 | Los Alamos | 87544 |
| Fire Marshal | 195 East Rd. Ste 104 | Los Alamos | 87544 |
| Fuller Lodge, Reservations | 2132 Central | Los Alamos | 87544 |
| GIS Services | 2400 Central Ave.
Suite A | Los Alamos | 87544 |
| Golf Course | 4290 Diamond Dr. | Los Alamos | 87544 |
| Historical Museum | 1921 Juniper St. | Los Alamos | 87544 |
| Indigent Health Care | 2300 Trinity Dr.
Suite A | Los Alamos | 87544 |
| Information Technology Division | 2400 Central Ave.
Suite A | Los Alamos | 87544 |
| Landfill Operations | 3701 East Jemez Rd. | Los Alamos | 87544 |
| Larry R. Walkup Aquatic Center | 2760 Canyon Road | Los Alamos | 87544 |
| Lemon Lot Permits | 150 Central Park Square | Los Alamos | 87544 |
| Mesa Public Library | 2400 Central Ave. | Los Alamos | 87544 |
| Mesa Public Library Administration | 2400 Central Ave. | Los Alamos | 87544 |
| Mesa Public Library Circulation | 2400 Central Ave. | Los Alamos | 87544 |
| Mesa Public Library Friends Bookstore | 2400 Central Ave. | Los Alamos | 87544 |
| Mesa Public Library Home Delivery Service | 2400 Central Ave. | Los Alamos | 87544 |
| Mesa Public Library Information/Reference | 2400 Central Ave. | Los Alamos | 87544 |
| Mesa Public Library Interlibrary Loan | 2400 Central Ave. | Los Alamos | 87544 |
| Mesa Public Library Internet Sign up | 2400 Central Ave. | Los Alamos | 87544 |
| Mesa Public Library Renewal by Phone | 2400 Central Ave. | Los Alamos | 87544 |
| Mesa Public Library Youth Services | 2400 Central Ave. | Los Alamos | 87544 |
| Municipal Court | 475 20th St. | Los Alamos | 87544 |
| Office of Management & Budget | 2300 Trinity Dr.
Suite A | Los Alamos | 87544 |
| Open Space | 101 Airport Basin Rd., Building 5D | Los Alamos | 87544 |
| Overpass Banner Permits | 150 Central Park Square | Los Alamos | 87544 |
| Park Reservations | 2760 Canyon Rd. | Los Alamos | 87544 |
| Parks Division | 101 Airport Basin Rd., Building 5D | Los Alamos | 87544 |
| Planning & Zoning | 195 East Rd., Suite 104 | Los Alamos | 87544 |
| Police Department | 2500 Trinity Dr. | Los Alamos | 87544 |
| Police Dispatch | 2500 Trinity Dr. | Los Alamos | 87544 |
| Probate Court/Judge | 475 20th St. | Los Alamos | 87544 |
| Probation Officer | 475 20th St. | Los Alamos | 87544 |
| Property Tax Payments | 150 Central Park Square | Los Alamos | 87544 |
| Public Records Requests | 133 Central Park Square | Los Alamos | 87544 |
| Public Works | 1925 Trinity Dr. | Los Alamos | 87544 |
| Purchasing | 101 Airport Basin Rd., Building 3E | Los Alamos | 87544 |
| Recreation Division | 2760 Canyon Rd. | Los Alamos | 87544 |
| Recycling Information | 3701 East Jemez Rd. | Los Alamos | 87544 |
| Risk Management | 101 Airport Basin Rd., Building 3E | Los Alamos | 87544 |
| RV/Trailer Storage Reservations | 101 Airport Basin Rd., Building 5D | Los Alamos | 87544 |
| Snow Removal | 101 Airport Basin Rd., Building 1C | Los Alamos | 87544 |
| Street Maintenance | 101 Airport Basin Rd., Building 1C | Los Alamos | 87544 |
| Traffic Division | 101 Airport Basin Rd., Building 1C | Los Alamos | 87544 |
| Traffic Violations/Court | 475 20th St. | Los Alamos | 87544 |
| Utilities Billing & Collections | 150 Central Park Square | Los Alamos | 87544 |
| Utilities Electric, Gas, Water & Wastewater Services | 170 Central Park Square | Los Alamos | 87544 |
| Utilities Energy Assistance Program | 150 Central Park Square | Los Alamos | 87544 |
| Voter Information & Registration | 2300 Trinity Dr.
Suite C | Los Alamos | 87544 |
| Warehouse | 101 Airport Basin Rd., Building 3E | Los Alamos | 87544 |
| White Rock Branch Library | 133 Longview Drive | Los Alamos | 87544 |
| White Rock Senior Center | 137 Longview Dr. | Los Alamos | 87544 |