The Boulevard Saint Germain is one of the biggest streets of the 6th arrondissement in Paris.
Assuming you mean the Luxembourg garden, it's a large park in Paris, in the 6th arrondissement.
1 arrondissement
The word "district" in French is translated as "arrondissement".
an arrondissement is an adminitrative subdivision of the département. In the town of Paris (which is also a département of its own), an arrondissement is one of the 20 districts.
11e
Montmartre is a hill which is 130 meters high, giving its name to the surrounding district, in the north of Paris in the 18th arrondissement, a part of the Right Bank.
The 1st through the 8th are the center of Paris. The 1st, 7th, and 8th include the Place de la Concorde, les Invalides, the Louvre, the Eiffel Tower, the Champs Elyseés, the Arc de Triomphe, and the Musée d'Orsay. The 4th includes the Notre Dame, the 6th has the Jardin du Luxembourg. The 1st is probably the most central to the tourist attractions, though it is not an especially good arrondissement to stay in unless you have a lot of money to spend. Sometimes it is the Métro lines which are more important for easy access to the center of Paris that the arrondissement itself.
It's called the 7th arrondissement, but the area that occupies most of it is the Faubourg Saint-Germain.
6e
Depends of the arrondissement. From 75001 to 75020 with the two last numbers are the number of the arrondissement. For example for the thirteenth arrondissement, the postal code is 75013. Sixteenth arrondissement has two postal codes : 75016 and 75116.
Queen Street is the main street in Auckland.
The abbreviation for Main Street is Main St.