In Texas, constables and their deputies are fully empowered peace officers with county-wide jurisdiction and thus, may legally exercise their authority in any precinct within their county.
Constables work directly with the Justice of the Peace, serving civil and criminal process as well as bailiff duties. Deputies may serve civil process in any precinct in their county and any contiguous county and can serve warrants anywhere in the state.
Constable's may also assist the county and district courts. In addition, they may perform patrol functions and make criminal investigations. They are involved in the overall effort to reduce the effects of crime in their communities, including in some cases the operation of truancy programs.