In that year, the council was responsible for an area of 300,800 acres, with a population estimated at 1,866, including 400 ratepayers, and capital value of ratable property of £476,700.
[4] It gained the Hundred of Paisley from the District Council of Swan Reach on 7 September 1933, a change that "very nearly doubled" the municipality in size.
[4] The council was heavily involved in the local response to the 1956 Murray River flood, which badly affected the area.
In 1965, it switched to a system of ten wards (Holder Irrigation, Holder South, New Well, Paisley, Qualco, Ramco, River, Taylorville, Town and Waikerie), each with one councillor, as well as an elected mayor; Town Ward subsequently received a second councillor in July 1977.
By 1986, the irrigation holdings in the district had increased to 5,000 hectares, of a total of 3002 square kilometres – growing, amongst other things, almost 50% of the stone fruit production of South Australia.