<P> Cousin marriage acceptance differs from one U.S. state to another ranging from being legal to a criminal offense . </P> <Table> <Tr> <Th> State </Th> <Th> First cousin marriage allowed </Th> <Th> Sexual relations or cohabitation allowed </Th> <Th> First - cousin marriages void </Th> <Th> Out - of - state marriages by state's residents void </Th> <Th> All out - of - state marriages void </Th> <Th> Sterility requirement to marry cousin </Th> <Th> First - cousin - once - removed marriage allowed </Th> <Th> Half - cousin marriage allowed </Th> <Th> Adopted - cousin marriage allowed </Th> </Tr> <Tr> <Td> Alabama </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Alaska </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Arizona </Td> <Td> Only if at least one is unable to reproduce </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Arkansas </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> California </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Colorado </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Connecticut </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Delaware </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> District of Columbia </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Florida </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Georgia </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Hawaii </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Idaho </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> <Td> Unknown </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> Illinois </Td> <Td> Only if both are over 50 or one is infertile </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> Iowa </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> Indiana </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> Kansas </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> Kentucky </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> Louisiana </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> No </Td> <Td> If judicial approval in writing is obtained </Td> </Tr> <Tr> <Td> Maine </Td> <Td> Proof of genetic counselling from a genetic counsellor </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Maryland </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Massachusetts </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Michigan </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> Minnesota </Td> <Td> Only certain types </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> <Td> No </Td> <Td> Yes </Td> <Td> No </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> Mississippi </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> Missouri </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> Montana </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> Nebraska </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Nevada </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> New Hampshire </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> No </Td> </Tr> <Tr> <Td> New Jersey </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> New Mexico </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> New York </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> </Tr> <Tr> <Td> North Carolina </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> <Td> Unknown </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> North Dakota </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> No </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> Ohio </Td> <Td> No </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Unknown </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> Oklahoma </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> Oregon </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Pennsylvania </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> Rhode Island </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> South Carolina </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> South Dakota </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> Tennessee </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Texas </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> </Tr> <Tr> <Td> Utah </Td> <Td> Only if both parties are 65 or older, or both are 55 or older with a district court finding of infertility of either party </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> Vermont </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Virginia </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Washington </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> West Virginia </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Unknown </Td> <Td> Unknown </Td> <Td> No </Td> <Td> Yes </Td> <Td> No </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Wisconsin </Td> <Td> Only if the woman is at least 55, or either is permanently sterile </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Unknown </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> Yes </Td> </Tr> <Tr> <Td> Wyoming </Td> <Td> No </Td> <Td> Yes </Td> <Td> Yes </Td> <Td> No </Td> <Td> No </Td> <Td> No </Td> <Td> Yes </Td> <Td> Unknown </Td> <Td> Yes </Td> </Tr> <Tr> <Th> State </Th> <Th> First cousin marriage allowed </Th> <Th> Sexual relations or cohabitation allowed </Th> <Th> First - cousin marriages void </Th> <Th> Out - of - state marriages by state's residents void </Th> <Th> All out - of - state marriages void </Th> <Th> Sterility requirement to marry cousin </Th> <Th> First - cousin - once - removed marriage allowed </Th> <Th> Half - cousin marriage allowed </Th> <Th> Adopted - cousin marriage allowed </Th> </Tr> </Table> <Tr> <Th> State </Th> <Th> First cousin marriage allowed </Th> <Th> Sexual relations or cohabitation allowed </Th> <Th> First - cousin marriages void </Th> <Th> Out - of - state marriages by state's residents void </Th> <Th> All out - of - state marriages void </Th> <Th> Sterility requirement to marry cousin </Th> <Th> First - cousin - once - removed marriage allowed </Th> <Th> Half - cousin marriage allowed </Th> <Th> Adopted - cousin marriage allowed </Th> </Tr>

Can you marry your first cousin in california