As of the latest information, the Archdiocese of Detroit encompasses approximately 200 parishes. This number can fluctuate due to various factors such as mergers or closures, so it's advisable to check the Archdiocese's official website or contact them directly for the most current statistics.
There are 292 church parishes in the archdiocese of Boston that covers about 30 miles from Boston. In the city proper itself, there are 45 parish churches.
There are many Catholic charities that are devoted to helping the homeless. One of the more notable ones is the Catholic Charities of the Archdiocese , which has multiple locations to help the homeless.
There are more than 50 churches are in Detroit city.
Zero
I believe that there are 30 Catholic parishes (churches) in Rome, Italy. I did a search on Masstimes.org and it listed 30 in Rome.
No. Many Protestant and Orthodox churches also name their parishes for saints.
Because at its core The Church is a business. So to protect certain assets and tax deductions, the Catholic church is a corporation. Many Protestant churches and synagogues are also incorporated.
Wikipedia (at the link below) lists 90 active Catholic Churches in Venice, and an additional twelve on the Islands which are part of Venice.
I think that there is just 1 in Quebec surprisingly. I am doing a research project on the churches in Quebec and I havge only found 1 Catolic church. Sory if this is not helpful. :P Although there are not as many churches in Québec City as in Rome, the city of the "300 steeples" or Montréal the city of the "100 clochers", there are a great many Catholic churches in Québec's capital city.
There were 137 priests, religious and diocesian in Singapore Archdiocese in 2004, see the link below:
The Archdiocese of New Orleans is the one Archdiocese for the state of Louisiana. The current Archbishop (not a Cardinal) is Gregory Michael Aymond. Therefore, Louisiana has zero Cardinals of the Holy Catholic Church.
Many Orthodox churches have a dome because it represents Heaven. Many Catholic churches also have domes, such as in St Peter's in the Vatican and St Mark's in Venice.