Perhaps you’ve noticed there are fewer post offices around. In the past decade, the United States Postal Service has closed almost 200 facilities nationwide in an aggressive effort to do away with and eventually privatize an institution that is older than the country itself. Included in that number are post offices that used to be on Main Street near St. Vincent’s Hospital and on Stratford Avenue. Like so many, they were closed and not replaced. Those closings have left Bridgeport, a city of 150,000 people, with exactly four post offices.