Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Essars is a commune in the Pas-de-Calais department in the Nord-Pas-de-Calais region of France. The commune is the lowest level of administrative division in the French Republic. French communes are roughly equivalent to incorporated municipalities or villages in the United States or gemeinden in Germany. French communes have no exact equivalent in the United Kingdom, but are closest to parishes, towns or cities.