The baby name Hilaria appears in baby name data for the United States from 1912 to 1986. It was most popular in 1935 with 42 babies given the name.
In the later years of this period, Hilaria has become less common than it once was.
| Year | Count |
|---|---|
| 1912 | 12 |
| 1913 | 20 |
| 1914 | 20 |
| 1915 | 18 |
| 1916 | 14 |
| 1917 | 14 |
| 1921 | 10 |
| 1922 | 6 |
| 1923 | 10 |
| 1924 | 21 |
| 1925 | 13 |
| 1926 | 15 |
| 1927 | 24 |
| 1928 | 40 |
| 1929 | 38 |
| 1930 | 34 |
| 1931 | 30 |
| 1932 | 30 |
| 1933 | 20 |
| 1934 | 6 |
| 1935 | 42 |
| 1936 | 11 |
| 1937 | 10 |
| 1938 | 8 |
| 1939 | 8 |
| 1940 | 6 |
| 1941 | 9 |
| 1943 | 18 |
| 1950 | 6 |
| 1951 | 7 |
| 1952 | 7 |
| 1953 | 8 |
| 1954 | 6 |
| 1956 | 6 |
| 1958 | 5 |
| 1959 | 5 |
| 1961 | 7 |
| 1986 | 10 |