Paris: The number of migrants sleeping rough on the streets of Paris has risen by at least a third since evacuations started at the "Jungle" shanty town in Calais last week, officials say.

Along the bustling boulevards and a canal in a northeastern corner of Paris, hundreds of tents have been pitched by migrants - mostly Africans who say they are from Sudan - with cardboard on the ground to try to insulate them from the autumn chill.

People walk between tents in a makeshift camp, in Paris, on Friday. Credit:AP

While the presence of migrants there is not new, it has grown substantially this week, Colombe Brossel, Paris deputy mayor in charge of security issues, said.

"We have seen a big increase since the start of the week. Last night, our teams counted 40 to 50 new tents there in two days," Ms Brossel said, adding there was now a total of 700 to 750.