Northcliffe is a former census-designated place (CDP) in Guadalupe County, Texas, United States.

The area is now part of the city of Schertz and did not have its population recorded separately at the 2010 census.

According to the United States Census Bureau, the CDP had a total area of 1.7 square miles (4.4 km2), all land.

There were 743 housing units at an average density of 444.7 per square mile (171.7/km2).

19.1% of all households were made up of individuals, and 9.9% had someone living alone who was 65 years of age or older.