Kolby appears in 2007`s top-1000 name list at rank 641.. 2001 was a `top year` for the name Kolby. (Based on 128 years of name history) In that year it ranked #359. The last time Kolby appeared among the most common names was in 1990. Our records go back to 1880

Year	Rank	Rank
2007	641
2006	666
2005	584
2004	494
2003	463
2002	385
2001	359
2000	542
1999	520
1998	550
1997	628
1996	674
1995	634
1994	713
1993	756
1992	706
1991	708
1990	822
1980	---
1970	---
1960	---
1950	---
1940	---
1930	---
1920	---
1910	---
1900	---
1890	---
1880	---