Polls open across the city at 7 a.m. on Tuesday and close at 8 p.m., at which point results for Boston will start to trickle in on City Hall’s website (www.cityofboston.gov).

So here’s a few numbers, provided by Mayor Thomas Menino’s press office and the city’s Election Department:

-- Thanks to the ballot questions, the ballot will be 18 inches long.

-- There are 387,142 registered voters eligible to walk into the polling booth. The city registered 28,930 voters between now and the September primary. At one point, people who participated in citizenship ceremonies walked right over to City Hall to register.

-- Party breakdown: Democrats reach 211,316; Republicans 25,903; unenrolled 147,858; and Green-Rainbow etc. 2,065.

-- In the 2008 presidential election, 236,525 voters went to the polls.

-- Boston has 153 polling locations and 255 precincts, up from 254 last time around. (Long story short: Thanks to Congressional redistricting, which was hashed out at the State House, a “sub-precinct” in the Fenway neighborhood was created.)

-- If you're seeking to avoid a potential crush of people, the noon-to-3 p.m. time zone is recommended.

-- 1,911 election officials will be on hand. Of that number, 458 speak a second language. Many of them have been working 12-hour days, 7 days a week in preparation for the election.