The baby name Thelbert appears in baby name data for the United States from 1913 to 1949. It was most popular in 1936 with 30 babies given the name.
In the later years of this period, Thelbert has become more popular compared with earlier years.
| Year | Count |
|---|---|
| 1913 | 10 |
| 1915 | 6 |
| 1918 | 15 |
| 1920 | 12 |
| 1921 | 15 |
| 1923 | 10 |
| 1926 | 5 |
| 1927 | 15 |
| 1930 | 10 |
| 1931 | 15 |
| 1936 | 30 |
| 1937 | 12 |
| 1939 | 18 |
| 1942 | 15 |
| 1949 | 21 |