In addition to the offices previously cited, Estopinal served on the St. Bernard Parish Police Jury, equivalent to the county commission in other states. The dates of police jury service are not included in the sketch of Estopinal in "A Dictionary of Louisiana Biography". Another source, however, indicates that he was the police jury president after 1884 and was still in that position in 1892, when Estopinal was also a state senator. At the time, it was possible to serve simultaneously in the state legislature and a part-time parish office. Such double-dipping continued into the 20th century. Another who served simultaneously in two positions was Earl Williamson, a local politician in Caddo Parish in north Louisiana, who was both a police juror and the mayor of Vivian. Estopinal was also a founding member of Lake Borgne Levee District.