We successfully electropolymerize homopolymer and copolymer from vinylbenzyltrimethylammonium chloride and divinylbenzene by cyclic voltammetry to form ultra-thin anion-conducting polymer films with significant anion conductance. The morphologies of electropolymerized polymers with different monomer compositions are analyzed by scanning electron microscopy and atomic force microscopy. In-situ electrochemical impedance spectroscopy is performed to track the electropolymerization process and film properties. High anion conductance of up to 2 mS is found in the electropolymerized thin films, suggesting that this technique can be suitable for making anion conducting electrodes for advanced electrochemical devices.