Peer is a city and municipality located in the province of Limburg, Flemish Region, Belgium. On January 1, 2006, Peer had a total population of …Peer is a city and municipality located in the province of Limburg, Flemish Region, Belgium. On January 1, 2006, Peer had a total population of 15,810. The total area is 86.95 km² which gives a population density of 182 inhabitants per km².