More than 68,000 New York City children applied for full-day pre-K this year, jumpstarting the third year of the city’s expansion, Mayor Bill de Blasio announced Thursday.

The total number of applications is in line with last year’s total, but the Bronx and Manhattan both saw drops in the number of families that applied. The Bronx had a 5 percent decrease, from 14,280 applications last year to 13,529.

Brooklyn, the borough with the greatest number of families who applied for pre-kindergarten, saw an increase, with 22,046 families applying — up from 21,500 families last year. Staten Island and Queens saw marginal increases.

The number of applications is just shy of de Blasio’s original goal of enrolling 70,000 four-year-olds in pre-K. The city pointed out that the number of applications represents three times the number of children enrolled in full-day pre-K before the expansion started in 2014.

De Blasio’s push for universal pre-K has largely been seen as a success, with seats generally meeting or surpassing quality standards. A recent, limited survey found that families said that pre-K saved them money and helped their children learn.

This year, the city has made a few changes to the application process. The application period opened earlier to give families more time to decide where to apply. Families will also receive offers in early May, a month earlier than last year.

Families who have not yet applied will be able to apply to programs with available seats from May 2 to May 20.