Popularity in the United States (by decade)
Numbers
| Robert (masculine) | Robert (feminine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | #81 | 0.225 | - | - | ||
| 2010 | #64 | 0.312 | - | - | ||
| 2000 | #36 | 0.501 | - | - | ||
| 1990 | #20 | 1.000 | - | - | ||
| 1980 | #8 | 1.672 | #773 | 0.012 | ||
| 1970 | #7 | 2.322 | #626 | 0.016 | ||
| 1960 | #5 | 3.318 | #602 | 0.014 | ||
| 1950 | #3 | 4.046 | #623 | 0.011 | ||
| 1940 | #2 | 5.002 | #529 | 0.014 | ||
| 1930 | #1 | 5.444 | #401 | 0.025 | ||
| 1920 | #1 | 5.068 | #376 | 0.026 | ||
| 1910 | #4 | 3.442 | #582 | 0.012 | ||
| 1900 | #6 | 2.443 | #828 | 0.006 | ||
| 1890 | #8 | 2.124 | #741 | 0.007 | ||
| 1880 | #9 | 2.045 | #627 | 0.009 | ||
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