Is your Visa available? Is your priority date current? June 2015 Visa Bulletin
First: (F1) Unmarried Sons and Daughters of U.S. Citizens: 23,400 plus any numbers not required for fourth preference.
Second: Spouses and Children, and Unmarried Sons and Daughters of Permanent Residents: 114,200, plus the number (if any) by which the worldwide family preference level exceeds 226,000, plus any unused first preference numbers:
A. (F2A) Spouses and Children of Permanent Residents: 77% of the overall second preference limitation, of which 75% are exempt from the per-country limit;
B. (F2B) Unmarried Sons and Daughters (21 years of age or older) of Permanent Residents: 23% of the overall second preference limitation.
Third: (F3) Married Sons and Daughters of U.S. Citizens: 23,400, plus any numbers not required by first and second preferences.
Fourth: (F4) Brothers and Sisters of Adult U.S. Citizens: 65,000, plus any numbers not required by first three preferences.
On the chart below, the listing of a date for any class indicates that the class is oversubscribed (see paragraph 1); "C" means current, i.e., numbers are available for all qualified applicants; and "U" means unavailable, i.e., no numbers are available. (NOTE: Numbers are available only for applicants whose priority date is earlier than the cut-off date listed below.)
Visit the June Visa 2015 Bulletin here.
First: Priority Workers: 28.6% of the worldwide employment-based preference level, plus any numbers not required for fourth and fifth preferences.
Second: Members of the Professions Holding Advanced Degrees or Persons of Exceptional Ability: 28.6% of the worldwide employment-based preference level, plus any numbers not required by first preference.
Third: Skilled Workers, Professionals, and Other Workers: 28.6% of the worldwide level, plus any numbers not required by first and second preferences, not more than 10,000 of which to "*Other Workers".
Fourth: Certain Special Immigrants: 7.1% of the worldwide level.
Fifth: Employment Creation: 7.1% of the worldwide level, not less than 3,000 of which reserved for investors in a targeted rural or high-unemployment area, and 3,000 set aside for investors in regional centers by Sec. 610 of Pub. L. 102-395.
From the Department of State website. Please visit here for the June 2015 Visa Bulletin.