Yes, it is a violation of law--you were charged with violating a town ordinance, which is a law, and pled guilty to it.It is about as minor a violation of law as is possible; and if the question had asked, for example, whether you have ever pled guilty to a misdomeanor or felony you have could have truthfully answered no, since violating a town ordinance is not a misdemeanor or felony. You also could have also answered "no" if the question asked about violations of state or federal law. But what you describe mets the question's criteria of being a "violation of law under the laws of ... any other jurisdication," since a town or city is "jurisdication."