Immigration and Customs Enforcement said 255 people were arrested in an international child exploitation investigation.
ICE officials said they also identified 61 child victims in the five-week operation that ended June 30.
Twenty people were charged with online sexual enticement of a minor.
Three juvenile victims were identified and rescued between Houston, Galveston and Corpus Christi between May 28 and June 30.
The remaining 235 people were charged with child pornography production, possession or distribution of child pornography, traveling with the intent to have sex with a minor, or other various offenses including rape.
So far this year, agents have arrested more than 1,600 people in such investigations.