The baby name Natsuko appears in baby name data for the United States from 1915 to 1931. It was most popular in 1925 with 18 babies given the name.
Over the period shown, Natsuko has stayed at a similar level of popularity.
| Year | Count |
|---|---|
| 1915 | 12 |
| 1917 | 10 |
| 1918 | 12 |
| 1919 | 10 |
| 1920 | 16 |
| 1921 | 10 |
| 1924 | 14 |
| 1925 | 18 |
| 1927 | 10 |
| 1931 | 14 |