Height Chart for 9-Year-Old Girls

Half of the girls in the CDC reference at 9 years are shorter than 133.1 cm (4 ft 4.4 in) and half are taller. The 3rd to 97th percentile range, which holds 94% of the reference, runs from 121.9 cm to 145.4 cm.

CDC standing stature percentiles for 9-year-old girls. Source: CDC 2000 Growth Charts: stature-for-age, 2-20 years, file statage.csv, row `Sex=2, Agemos=108.5 (completed month 108 band)` (dataset page).
Percentile	Metric	Feet-inches
3rd	121.9 cm	4 ft 0.0 in
5th	123.2 cm	4 ft 0.5 in
10th	125.3 cm	4 ft 1.3 in
25th	129.0 cm	4 ft 2.8 in
50th	133.1 cm	4 ft 4.4 in
75th	137.4 cm	4 ft 6.1 in
90th	141.4 cm	4 ft 7.7 in
95th	143.8 cm	4 ft 8.6 in
97th	145.4 cm	4 ft 9.2 in

Check a height against this row

Accepts 110.2 to 160.4 cm.

Growth in the year after 9 years

The median rises 2.5 cm in the next 6 months and 5.1 cm in the next 12, reaching 138.2 cm at 10 years.

This is the slowest stretch of the girls' table between ages 4 and 10: the smallest 12-month gain, 5.0 cm, starts at 8 years 6 months. After that the median speeds up again, to 7.3 cm in the 12 months from 11 years 1 month.

The site's guides use growth under about 4 cm a year, between age 4 and puberty, as a reason to ask a pediatrician. In this table even the lowest line, the 3rd percentile, goes up 4.1 cm over the next 12 months.

Nearby rows of the CDC stature-for-age table for girls, in centimeters. The last column is the change in the median since the row above.
Age	3rd	50th	97th	Change
7 years	111.9	121.8	132.7
8 years	117.3	127.8	139.4	+6.0
8 years 6 months	119.7	130.6	142.4	+2.8
9 years	121.9	133.1	145.4	+2.5
9 years 6 months	123.9	135.6	148.3	+2.5
10 years	126.0	138.2	151.3	+2.6
11 years	130.7	144.3	158.1	+6.1

Spread at 9 years

The 3rd-to-97th range covers 23.5 cm and the 25th-to-75th range 8.4 cm. Two years earlier the 3rd-to-97th range was 20.8 cm; it keeps widening until 11 years 6 months, where it reaches 28.0 cm.

In height terms, a 9-year-old girl on the 3rd percentile (121.9 cm) stands about level with an average girl of 7 years (121.8 cm), while one on the 97th (145.4 cm) is about level with the median at 11 years 2 months (145.4 cm).

Girls compared with boys

At 9 years the boys' median is 133.7 cm; the gap to the girls' median is 0.6 cm, with boys taller. The girls' median is higher than the boys' from 10 years 9 months to 13 years 2 months, and lower at every other row of the table.

When to ask a pediatrician

Between age 4 and puberty, the site's guides suggest asking a pediatrician about growth under about 4 cm a year, a child who crosses downward through percentile lines, or a height far below what the parents' heights suggest. Puberty that starts before 8 in girls is also on that list.

Reference values only, not medical advice. How these tables are built.