Law Enforcement Agencies in Coteau Holmes, LA LA › St. Martin County Agencies serving the city of Coteau Holmes in LA. Agency Types in Coteau Holmes County Jails 1 agencies Municipal Police 2 agencies Sheriff 1 agencies All Agencies in Coteau Holmes, LA Parks Police Department St. Martin County Saint Martin Parish Jail St. Martin County Saint Martin Parish Sheriffs Office St. Martin County Saint Martinville Police Department St. Martin County
