City All Locations... City of Diamond BarCity of La PuenteCity of Walnut go Results Found: 3 Button group with nested dropdown City of Walnut 51-99 Employees City of Walnut 21201 La Puente Rd. Walnut CA 91789 (909) 595-7543 Visit Website City of La Puente 51-99 Employees City of La Puente 15900 E Main St. La Puente CA 91744 (626) 855-1500 Visit Website City of Diamond Bar 26-50 Employees City of Diamond Bar 21810 Copley Drive Diamond Bar CA 91765 (909) 839-7000 Visit Website