  Racks and quandles are prominent set-theoretical solutions of the Yang-Baxter
equation. We enumerate racks and quandles of orders $n\le 13$ up to
isomorphism, improving upon the previously known results for $n\le 8$ and $n\le
9$, respectively. The enumeration is based on the classification of subgroups
of small symmetric groups up to conjugation, on a representation of racks and
quandles in symmetric groups due to Joyce and Blackburn, and on a number of
theoretical and computational observations concerning the representation. We
explicitly find representatives of isomorphism types of racks of order $\le 11$
and quandles of order $\le 12$. For the remaining orders we merely count the
isomorphism types, relying in part on the enumeration of $2$-reductive racks
and $2$-reductive quandles due to Jedli\v{c}ka, Pilitowska, Stanovsk\'y and
Zamojska-Dzienio.
