Last names from KOS to KOSZYK

Each of the names is displayed with corresponding data on the name's rank and the number of time it shows up in census. Some surnames are also augmented with information about their origins and meanings. Names are sorted in alphabetical order.


Name Rank RankDelta Count Origin Meaning
2000 census 1990 census in
rank		 2000 census
Kos 16,360 20,155 Up Arrow 1,621 Jewish Name KOS is a Latin ...
Kosa 32,743 37,626 Up Arrow 661 Czech Name KOSA is a Latin...
Kosack 78,838 62,732 Down Arrow 225 Austrian
Kosak 35,666 25,437 Down Arrow 596 Jewish
Kosaka 58,553 Up Arrow 324 Japanese
Kosakowski 24,892 25,436 Up Arrow 938 Polish
Kosal 78,326 Up Arrow 227 Hungarian
Kosan 108,734 Up Arrow 151 Hungarian
Kosanke 47,575 50,960 Up Arrow 419 Polish
Kosanovic 144,908 50,959 Down Arrow 105 Croatian
Kosanovich 50,801 Up Arrow 386 Croatian
Kosar 30,552 35,437 Up Arrow 721 Czech Name KOSAR is a Lati...
Kosareff 127,948 82,685 Down Arrow 123 Russian Male name KOSAREFF i...
Kosarek 74,164 Up Arrow 243 Czech
Kosbab 73,931 62,731 Down Arrow 244
Kosberg 96,480 Up Arrow 175
Koscak 117,538 Up Arrow 137 Slovakian
Kosch 31,986 40,250 Up Arrow 681 Jewish
Koschak 79,115 Up Arrow 224 Polish
Kosche 116,835 Up Arrow 138 Belgian


Name Rank RankDelta Count Origin Meaning
2000 census 1990 census in
rank		 2000 census
Koschel 140,756 Up Arrow 109
Koscher 124,109 Up Arrow 128 Jewish
Koschnick 143,847 Up Arrow 106
Koscho 94,676 71,215 Down Arrow 179
Koscielak 139,757 71,214 Down Arrow 110
Koscielniak 40,019 82,684 Up Arrow 516 Polish
Koscielny 101,157 Up Arrow 165
Koscielski 67,936 Up Arrow 271 Polish
Koscik 124,872 Up Arrow 127 Slovakian
Koscinski 42,912 40,249 Down Arrow 475 Polish
Kosciolek 65,298 Up Arrow 284 Polish
Kosciuk 105,374 Up Arrow 157
Kosco 55,124 62,729 Up Arrow 349 Slovakian
Kose 69,201 Up Arrow 265 Turkish
Kosec 127,948 Up Arrow 123 Russian Name KOSEC is a Lati...
Kosecki 101,654 Up Arrow 164 Hungarian
Kosek 22,304 56,196 Up Arrow 1,078 Czech
Kosel 34,308 27,505 Down Arrow 625 Jewish
Koselke 79,676 Up Arrow 222
Kosen 135,837 62,728 Down Arrow 114 Belgian
GenealogyDig logo
Name Rank RankDelta Count Origin Meaning
2000 census 1990 census in
rank		 2000 census
Koser 18,883 21,463 Up Arrow 1,338 Jewish
Kosh 37,728 35,436 Down Arrow 554 Jewish
Koshak 71,143 Up Arrow 256 Name KOSHAK is a Lat...
Koshar 86,657 56,195 Down Arrow 200 Hungarian
Kosharek 93,006 Up Arrow 183
Kosher 129,619 Up Arrow 121
Koshi 113,519 82,683 Down Arrow 143
Koshinski 73,931 Up Arrow 244 Polish
Koshinsky 138,741 Up Arrow 111 Jewish
Koshiol 69,636 71,213 Up Arrow 263
Koshko 130,443 Up Arrow 120
Kosht 134,037 Up Arrow 116
Koshy 24,200 46,741 Up Arrow 971 Indian
Kosiak 116,835 Up Arrow 138
Kosiara 138,741 Up Arrow 111
Kosiba 30,582 40,248 Up Arrow 720 Polish
Kosic 92,217 Up Arrow 185 Slovenian Name KOSIC is a Lati...
Kosich 73,931 Up Arrow 244 Croatian
Kosick 68,782 Up Arrow 267 Name KOSICK is a Lat...
Kosicki 93,427 56,194 Down Arrow 182 Polish
Popular Videos for all ages
Name Rank RankDelta Count Origin Meaning
2000 census 1990 census in
rank		 2000 census
Kosidowski 122,534 Up Arrow 130
Kosiek 76,946 Up Arrow 232 Polish
Kosier 38,992 62,727 Up Arrow 532 Hungarian
Kosik 28,489 50,958 Up Arrow 788 Czech Name KOSIK is a Lati...
Kosikowski 99,214 Up Arrow 169
Kosin 64,186 62,726 Down Arrow 290 Jewish
Kosina 116,123 Up Arrow 139 Slovakian
Kosinski 11,224 15,454 Up Arrow 2,589 Polish
Kosior 57,849 Up Arrow 329 Polish
Kosiorek 56,526 82,682 Up Arrow 338 Polish
Kosir 86,657 37,625 Down Arrow 200 Slovenian
Kosirog 139,757 Up Arrow 110
Kosis 125,639 Up Arrow 126 Hungarian
Kositzke 115,489 43,219 Down Arrow 140
Koska 40,265 50,956 Up Arrow 512 Polish
Koske 62,577 Up Arrow 299 Hungarian
Koskela 30,645 40,247 Up Arrow 718 Finnish
Koskey 49,563 Up Arrow 398
Koski 5,629 5,911 Up Arrow 5,655 Finnish
Koskie 58,397 56,193 Down Arrow 325
Genealogical Societies
Name Rank RankDelta Count Origin Meaning
2000 census 1990 census in
rank		 2000 census
Koskinas 121,058 Up Arrow 132
Koskinen 42,289 43,218 Up Arrow 483 Finnish
Koskiniemi 119,644 Up Arrow 134
Kosko 25,147 Up Arrow 925 Greek
Koskovich 61,544 Up Arrow 305
Kosky 34,071 37,624 Up Arrow 630 Jewish
Kosla 93,006 Up Arrow 183
Koslan 149,328 82,681 Down Arrow 101
Kosler 101,654 Up Arrow 164 Polish
Kosloff 108,153 Up Arrow 152
Kosloske 81,414 Up Arrow 216
Kosloski 29,598 26,405 Down Arrow 751 Polish
Koslosky 35,797 27,504 Down Arrow 593
Koslow 32,609 30,145 Down Arrow 664
Koslowski 28,994 56,192 Up Arrow 771 Lithuanian
Koslowsky 71,610 Up Arrow 254
Kosma 98,770 Up Arrow 170 Hungarian
Kosmach 122,534 Up Arrow 130 Russian Name KOSMACH is a La...
Kosmal 116,123 Up Arrow 139
Kosmala 70,679 37,623 Down Arrow 258 Polish
British Counties
Name Rank RankDelta Count Origin Meaning
2000 census 1990 census in
rank		 2000 census
Kosmalski 67,317 Up Arrow 274 Polish
Kosman 30,383 62,725 Up Arrow 726 Czech
Kosmas 68,360 Up Arrow 269
Kosmatka 60,557 71,212 Up Arrow 311 Polish
Kosmerl 117,538 Up Arrow 137 Slovenian
Kosmicki 37,728 46,740 Up Arrow 554 Polish
Kosmider 91,004 Up Arrow 188 Polish
Kosmin 112,365 Up Arrow 145 Jewish Male name KOSMIN is ...
Kosmo 129,619 Up Arrow 121
Kosmos 117,538 Up Arrow 137 Austrian
Kosmoski 78,838 Up Arrow 225 Polish
Kosmowski 75,219 50,955 Down Arrow 239 Polish
Kosnik 57,985 Up Arrow 328 Polish
Koso 121,780 82,680 Down Arrow 131 Hungarian
Kosobucki 64,186 Up Arrow 290 Polish
Kosobud 135,837 Up Arrow 114
Kosoff 105,905 71,211 Down Arrow 156 Jewish Male name KOSOFF is ...
Kosofsky 89,172 62,724 Down Arrow 193
Kosola 130,443 Up Arrow 120 Hungarian
Koson 120,330 Up Arrow 133 Hungarian
USA Counties
Name Rank RankDelta Count Origin Meaning
2000 census 1990 census in
rank		 2000 census
Kososki 102,173 Up Arrow 163
Kosovich 100,663 Up Arrow 166 Croatian
Kosowicz 138,741 Up Arrow 111
Kosowski 38,141 40,246 Up Arrow 546 Polish
Kosowsky 111,119 Up Arrow 147
Kosoy 128,797 Up Arrow 122 Jewish
Koss 4,707 7,199 Up Arrow 6,882 Jewish
Kossack 71,808 71,210 Down Arrow 253
Kossak 70,906 82,677 Up Arrow 257 Polish
Kossakowski 96,918 71,209 Down Arrow 174 Polish
Kosse 78,035 56,191 Down Arrow 228 Hungarian Name KOSSE is a Lati...
Kossel 116,835 Up Arrow 138 Austrian
Kossen 98,770 82,676 Down Arrow 170 Hungarian
Kossick 91,404 Up Arrow 187 South african
Kossin 111,740 71,208 Down Arrow 146 Hungarian
Kossler 70,906 Up Arrow 257 Hungarian
Kossman 40,265 25,435 Down Arrow 512 Jewish
Kossmann 75,695 71,207 Down Arrow 237 Jewish
Kossoff 86,657 Up Arrow 200 Jewish
Kossow 40,335 33,481 Down Arrow 511 Hungarian
GenealogyDig logo
Name Rank RankDelta Count Origin Meaning
2000 census 1990 census in
rank		 2000 census
Kossuth 80,216 Up Arrow 220 Slovakian
Kost 9,434 11,357 Up Arrow 3,161 Jewish Name KOST is a Latin...
Kosta 33,292 Up Arrow 647 Greek
Kostadinov 149,328 Up Arrow 101 Turkish Male name KOSTADINOV...
Kostak 122,534 Up Arrow 130
Kostakis 81,700 Up Arrow 215
Kostal 48,567 56,190 Up Arrow 408 Czech
Kostan 126,400 Up Arrow 125 Hungarian
Kostas 50,572 Up Arrow 388 Greek
Koste 88,825 Up Arrow 194 Hungarian
Kostecka 73,931 Up Arrow 244 Name KOSTECKA is a L...
Kostecki 26,394 56,189 Up Arrow 870 Polish
Kostecky 134,037 Up Arrow 116
Kostek 55,849 56,188 Up Arrow 343 Polish
Kostel 128,797 46,739 Down Arrow 122
Kostelac 66,274 Up Arrow 279 Czech
Kostelec 124,109 Up Arrow 128 Slovenian
Kostelecky 31,085 56,187 Up Arrow 706 Czech
Kostelic 126,400 Up Arrow 125 Croatian
Kostelnik 26,672 26,404 Down Arrow 859 Czech
Popular Videos for all ages
Name Rank RankDelta Count Origin Meaning
2000 census 1990 census in
rank		 2000 census
Kostelny 80,216 Up Arrow 220 Slovakian
Kosten 52,714 43,217 Down Arrow 369 Jewish
Kostenbader 84,968 Up Arrow 205
Kostenko 48,469 71,206 Up Arrow 409 Russian Name KOSTENKO is a L...
Koster 5,226 6,262 Up Arrow 6,137 Jewish
Kosterman 57,985 Up Arrow 328 Belgian
Kosters 51,352 82,674 Up Arrow 381 Dutch
Kostic 39,499 35,435 Down Arrow 524 Slovenian Name KOSTIC is a Lat...
Kostich 79,394 71,205 Down Arrow 223 Croatian
Kostick 35,003 62,723 Up Arrow 610 Slovakian Name KOSTICK is a La...
Kostik 87,348 Up Arrow 198 Slovakian Name KOSTIK is a Lat...
Kostin 72,466 Up Arrow 250 Russian Male name KOSTIN is ...
Kostis 126,400 62,722 Down Arrow 125
Kostiuk 56,392 62,721 Up Arrow 339 Ukrainian
Kostival 135,837 Up Arrow 114 Slovakian
Kostka 19,398 18,151 Down Arrow 1,291 Czech
Kostman 74,398 Up Arrow 242 Jewish
Kostner 56,687 Up Arrow 337 Jewish
Kosto 107,038 Up Arrow 154
Kostoff 47,210 Up Arrow 423 Male name KOSTOFF is...
Genealogical Societies
Name Rank RankDelta Count Origin Meaning
2000 census 1990 census in
rank		 2000 census
Kostohryz 98,298 62,720 Down Arrow 171
Kostolansky 150,436 Up Arrow 100 Slovakian
Koston 103,193 Up Arrow 161
Kostopoulos 50,801 Up Arrow 386 Greek
Kostos 111,740 Up Arrow 146 Hungarian
Kostov 114,852 Up Arrow 141 Jewish Male name KOSTOV is ...
Kostreba 88,461 Up Arrow 195
Kostreva 84,631 Up Arrow 206
Kostro 83,004 Up Arrow 211 Polish
Kostroski 135,837 Up Arrow 114
Kostrzewa 44,821 82,672 Up Arrow 451 Polish
Kostrzewski 52,174 Up Arrow 374 Polish
Kostuch 66,676 Up Arrow 277 Polish
Kostuck 116,835 Up Arrow 138 Russian Name KOSTUCK is a La...
Kostuk 136,783 Up Arrow 113 Russian Name KOSTUK is a Lat...
Kostur 129,619 Up Arrow 121 Slovakian
Kostura 66,676 31,695 Down Arrow 277 Slovakian
Kosty 65,492 62,719 Down Arrow 283 Hungarian
Kostyk 63,141 62,718 Down Arrow 296 Ukrainian
Kostyo 130,443 Up Arrow 120 Hungarian
British Counties
Name Rank RankDelta Count Origin Meaning
2000 census 1990 census in
rank		 2000 census
Kosub 63,812 Up Arrow 292 Polish
Kosuda 118,954 Up Arrow 135
Kosut 86,992 Up Arrow 199 Slovakian
Kosydar 91,404 Up Arrow 187 Polish
Koszalka 107,038 Up Arrow 154 Austrian
Koszarek 79,676 Up Arrow 222
Koszela 139,757 Up Arrow 110
Koszewski 99,725 Up Arrow 168
Koszuta 99,214 Up Arrow 169 Polish
Koszyk 80,812 46,738 Down Arrow 218 Polish

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