Ancestry website. Free to search. A subscription is necessary to view most records.
Find My Past website. Free to search. With the exception of the 1881 census, a subscription or pay-as-you go credits is needed to view the records.
Census Research Wales
1841 - 1891 Census: Pembrokeshire, Wales. Bordering parishes of Cardiganshire and Carmarthenshire are included.
Wales Census Records
Census records online in Wales.
Family Search website