Cedar Hill is located at 32°35′18″N 96°56′50″W (32.588454, -96.947325).
 Adjacent cities are Grand Prairie to the southwest, west, and northwest; Dallas to the north; Duncanville to the north and northeast; DeSoto to the northeast and east; Glenn Heights and Ovilla to the southeast; and Midlothian to the south.
 Most of the city of Cedar Hill is in Dallas County, but a small southern section of the city spills over into Ellis County.

According to the United States Census Bureau, the city has a total area of 35.9 square miles (93.0 km²), of which 35.8 square miles (92.8 km²) is land and 0.08 square miles (0.2 km²), or 0.26%, is water.

It is sometimes referred to as the "hill country of Dallas" (in comparison to the "hill country" surrounding Austin and San Antonio).
The city is full of native eastern red cedar evergreen trees and stands at an elevation of about 800 feet (240 m) above sea level—the highest point in a straight line from the Red River at the Texas-Oklahoma border to the Gulf Coast.

Because of its elevation many local radio and TV stations have their antennas located there.
Pulse-Doppler weather radar equipment for tracking tornadoes are also attached to these steel antennas that reach several thousand feet into the air and whose blinking lights appear like Christmas trees at night.

The "Austin chalk" limestone uplift on which most of Cedar Hill is spread is covered with "gumbo"-cleche-clay topsoil from a few inches to many feet.
The western edge of the city, primarily the Lake Ridge neighborhood, falls below the limestone uplift on the Eagle Ford shale strata surrounding Joe Pool Lake.
Cedar Hill is located at 32°35′18″N 96°56′50″W (32.588454, -96.947325).  Adjacent cities are Grand Prairie to the southwest, west, and northwest; Dallas to the north; Duncanville to the north and northeast; DeSoto to the northeast and east; Glenn Heights and Ovilla to the southeast; and Midlothian to the south.  Most of the city of Cedar Hill is in Dallas County, but a small southern section of the city spills over into Ellis County.
According to the United States Census Bureau, the city has a total area of 35.9 square miles (93.0 km²), of which 35.8 square miles (92.8 km²) is land and 0.08 square miles (0.2 km²), or 0.26%, is water.
It is sometimes referred to as the "hill country of Dallas" (in comparison to the "hill country" surrounding Austin and San Antonio). The city is full of native eastern red cedar evergreen trees and stands at an elevation of about 800 feet (240 m) above sea level—the highest point in a straight line from the Red River at the Texas-Oklahoma border to the Gulf Coast.
Because of its elevation many local radio and TV stations have their antennas located there. Pulse-Doppler weather radar equipment for tracking tornadoes are also attached to these steel antennas that reach several thousand feet into the air and whose blinking lights appear like Christmas trees at night.
The "Austin chalk" limestone uplift on which most of Cedar Hill is spread is covered with "gumbo"-cleche-clay topsoil from a few inches to many feet. The western edge of the city, primarily the Lake Ridge neighborhood, falls below the limestone uplift on the Eagle Ford shale strata surrounding Joe Pool Lake.
Cedar Hill, Texas