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is a city in Gonzales and Wilson Counties in the U.S. state of Texas. The population was 2,186 at the 2000 census.
The Wilson County portion of Nixon is part of the San Antonio Metropolitan Statistical Area.
Nixon is located at (29.270443, -97.762423), primarily within Gonzales County.
According to the United States Census Bureau, the city has a total area of 1.1 square miles (2.9 km²), all of it land.