This is the official size for women’s high school, college, and pro basketball. Size 5: 27.5" 17 oz: Boys and girls ages 9-11 years old. This is the standard youth basketball you find in most stores. Size 4: 25.5" 14 oz: Boys and girls ages 5-8 years old. Size 3: 22" 10 oz: Boys and girls ages 4-8 years old. Also known as "mini" basketball. Size 1: 16" 8 oz
For anyone, male or female, between the ages of nine and 11, a ball size of 27.5 inches in circumference is recommended, and is the most commonly sized ball used in youth basketball leagues.
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Size 7 Basketball: For boys, a size 7 basketball should be used once they hit 14-years-old ...
This new ball measured 30-32" in circumference which was quite a bit larger than the soccer balls players had been using. And larger than the official size basketball we use today. In the early years, it was a challenge to produce a perfectly round ball, and as a result, the sizes and shapes were slightly different with each one.
Boys in middle school (ages 12 and up) use a 29.5-inch ball. For anyone, male or female, between the ages of nine and 11, a ball size of 28.5 inches in circumference is recommended.Boys and girls between the ages of 4 and 8 should use a basketball between the sizes of 22 inches and 25.5 inches in circumference.
Richardson YMCA Youth Basketball Rules Playing Format Quick View Division/Grade Ball Size Goal Height Free Throw Time Outs Game Length Court Size K-2nd 27.5” 8 Feet 10 Feet 1 Per Half 8-min quarters Half Court 3rd Boys 27.5” 9 Feet 10 Feet 2 Per Half 8-min quarters Full Court