This is the 1905 New York State Census record of the O'Hara family. They're living at 586 Baltic St., only about a block and a half from where they lived at 527 Baltic St. in 1910. In the interim, however, they probably lived somewhere else entirely, as the church they attended in that neighborhood, St. Augustine's in Park Slope, has the 1905 record of their daughter Malinda's baptism, but not what should have been the c. 1908 record of their daughter Mary's baptism. Neither girl lived long enough to celebrate any of the other sacraments.
In 1905, the family is listed as John, 30; Mary, 29; John, 8; Eugene, 6; Pacey, 3; and Malina, 2 mos. Malina should be Malinda, and Pacey should be Patrick, although for all I know he may have been called Pacey. Both parents were born in Ireland, while all the kids are listed as American-born, though Patrick was actually born in Ireland in 1902. The family had moved back to Ireland and lived there between 1900 and 1902. In the column "number of years in the United States," John has answered 17 and Mary 16. I wonder if that's given as "number of years since immigration," or if it's been adjusted for the ~2 years they had spent in Ireland since they immigrated. If the former, they immigrated in 1888 and 1889, respectively. If the latter, it may have been more like 1890 and 1891. All are citizens. (I've yet to attempt to wade through the astronomical numbers of John O'Haras in Brooklyn at the turn of the century to find John O'Hara's naturalization papers.)
John is a stableman, and Mary does house work. John Jr. (my great-grandfather, AKA Grandpa JJ) and Eugene are "at school," but neither "Pacey," nor Malinda is.