A survey of ixodid ticks in Jackson County, the most eastward of the three coastal counties of Mississippi, between August 25, 1947, and May 28, 1949, revealed the presence of six species. Identifications based on field collections showed the tick population on domesticated animals to be composed for four genera and five species as follows: Amblyomma americanum (L.,) the lone star tick; A. maculatum Koch, the Gulf Coast tick; Dermacentor variabilis (Say), the American dog tick; Ixodes scapularis Say, the black-legged tick; and, Rhipicephalus sanguineus (Latr.), the brown dog tick. The rabbit tick, Haemaphysalis leporis-palustris (Pack.), was collected from specimens of Sylvilagus floridanus alacer , cottontail rabbit.