| King (1,998,890) | Kelly (1,248,628) | Kennedy (758,759) |
| Kelley (725,299) | Knight (545,476) | Keller (414,372) |
| Klein (310,598) | Kramer (243,603) | Kane (241,402) |
| Kirk (223,233) | Kirby (208,466) | Koch (202,629) |
| Kerr (197,955) | Knapp (197,125) | Kent (185,487) |
| Kline (185,228) | Kim (183,596) | Knox (182,815) |
| Kemp (179,956) | Keith (174,377) | Kinney (155,361) |
| Kaufman (144,213) | Kenney (134,122) | Kimball (129,730) |
| Krause (128,266) | Kuhn (127,149) | Kendall (126,439) |
| Krueger (125,426) | Khan (119,169) | Kirkpatrick (116,714) |
| Key (116,522) | Kern (116,256) | Kidd (114,106) |
| Katz (113,140) | Knowles (110,969) | Kessler (109,203) |
| Kaiser (106,663) | Kaplan (103,528) | Kirkland (98,373) |
| Kay (98,355) | Kendrick (90,180) | Keenan (87,290) |
| Kurtz (87,071) | Kenny (83,594) | Kraft (80,035) |
| Kauffman (77,289) | Kearney (76,895) | Kellogg (76,656) |
| Kyle (76,194) | Koenig (74,973) | Keating (74,386) |
| Kaur (72,474) | Kruse (72,346) | Keefe (72,273) |
| Keys (72,034) | Keen (70,774) | Kilgore (69,438) |
| Koehler (68,067) | Kraus (67,221) | Kincaid (65,325) |
| Kiser (65,149) | Kohler (65,026) | Kelsey (62,888) |
| Kerns (60,141) | Keyes (60,012) | Keene (59,066) |
| Kearns (58,781) | Kruger (58,722) | Kahn (58,185) |
| Kenyon (57,664) | Kimble (56,441) | Kang (56,235) |
| Knutson (56,110) | Kinsey (55,884) | Keeler (53,674) |
| Kowalski (51,931) | Knott (50,264) | Kilpatrick (48,257) |
| Kuntz (44,919) | Kitchen (44,473) | Killian (44,397) |
| Keegan (43,575) | Keener (42,223) | Kolb (42,105) |
| Kumar (41,439) | Keck (40,749) | Kemper (40,412) |
| Krebs (39,353) | Kopp (39,116) | Kiefer (38,698) |
| Keefer (37,517) | Kingsley (37,389) | Knowlton (37,326) |
| Koontz (37,075) | Kaminski (36,730) | Kohn (36,050) |
| Kohl (35,588) | Keyser (35,234) | Kelleher (35,102) |
| King (4,760) | Kelly (2,302) | Kelley (1,800) |
| Kennedy (1,778) | Knight (1,778) | Keller (1,245) |
| Kirby (710) | Klein (676) | Keith (649) |
| Kramer (626) | Kemp (621) | Kerr (595) |
| Kirk (593) | Koch (527) | Kent (512) |
| Kline (501) | Knapp (486) | Knox (467) |
| Kidd (426) | Knowles (423) | Kane (395) |
| Kinney (387) | Key (380) | Kendall (360) |
| Kirkland (330) | Kuhn (328) | Keltner (317) |
| Kilgore (315) | Krueger (307) | Kincaid (305) |
| Kessler (304) | Kaiser (299) | Krause (295) |
| Kenyon (283) | Kimball (282) | Kenney (281) |
| Kauffman (274) | Kaufman (270) | Kirkpatrick (270) |
| Kendrick (265) | Kern (263) | Keys (260) |
| Keen (251) | Keene (249) | Kellogg (246) |
