Linhai består av fem subsistrikter og 14 storkommuner: Gucheng (古城街道), Dayang (大洋街道), Jiangnan (江南街道), Datian (大田街道), Shaojiadu (邵家渡街道), Xunqiao (汛桥镇), Dongcheng (东塍镇), Xiaozhi (小芝镇), Taozhu (桃渚镇), Shangpan (上盘镇), Duqiao (杜桥镇), Yongquan (涌泉镇), Youxi (尤溪镇), Hetou (河头镇), Yanjiang (沿江镇), Kuocang (括苍镇), Yongfeng (永丰镇), Huixi (汇溪镇), Baishuiyang (白水洋镇).