Laguna Niguel is located at 33°31′55″N 117°42′9″W (33.531938, −117.702503).
According to the United States Census Bureau, the city has a total area of 14.9 square miles (39 km²).
14.8 square miles (38 km²) of it is land and 0.05 square miles (0.13 km²) of it (0.35%) is water.

Laguna Niguel consists of mostly hilly terrain, being located within the San Joaquin Hills.
The average elevation is 400 feet (120 m); elevations range from near sea level to 936 feet (285 m) at the summit of Niguel Hill, in the southwest corner of the city.
Neighboring cities are Aliso Viejo and Laguna Hills to the north, Mission Viejo and San Juan Capistrano to the east, and Laguna Beach and Dana Point to the south.
On the west, it borders the significant unincorporated acreage of Aliso and Wood Canyons Wilderness Park.

The main watercourses in Laguna Niguel are Salt Creek, which flows through the southern part of the city, and Sulphur Creek, which drains much of the northern half.
Sulphur Creek is a tributary of Aliso Creek, which flows through the wide and deep Aliso Canyon before reaching the Pacific Ocean.
Laguna Niguel Lake, formed by damming Sulphur Creek, is the largest body of water in the city.
Although Laguna Niguel is located very close to the Pacific, it does not border it, the result of a controversy over the coastline with Dana Point in 1989 (see #History).
Laguna Niguel is located at 33°31′55″N 117°42′9″W (33.531938, −117.702503). According to the United States Census Bureau, the city has a total area of 14.9 square miles (39 km²). 14.8 square miles (38 km²) of it is land and 0.05 square miles (0.13 km²) of it (0.35%) is water.
Laguna Niguel consists of mostly hilly terrain, being located within the San Joaquin Hills. The average elevation is 400 feet (120 m); elevations range from near sea level to 936 feet (285 m) at the summit of Niguel Hill, in the southwest corner of the city. Neighboring cities are Aliso Viejo and Laguna Hills to the north, Mission Viejo and San Juan Capistrano to the east, and Laguna Beach and Dana Point to the south. On the west, it borders the significant unincorporated acreage of Aliso and Wood Canyons Wilderness Park.
The main watercourses in Laguna Niguel are Salt Creek, which flows through the southern part of the city, and Sulphur Creek, which drains much of the northern half. Sulphur Creek is a tributary of Aliso Creek, which flows through the wide and deep Aliso Canyon before reaching the Pacific Ocean. Laguna Niguel Lake, formed by damming Sulphur Creek, is the largest body of water in the city. Although Laguna Niguel is located very close to the Pacific, it does not border it, the result of a controversy over the coastline with Dana Point in 1989 (see #History).
Laguna Niguel, California