Almost all of the 18 states, excluding only one state, were branches of the princely state of Limbdi. The territory was merged with the District Thana of Wadhwan after the year 1935. It was done in order to form the new Wadhwan Bhoika Thana which included almost 35 estates, covering a total area of 347 sq and comprising of a total population of 38,719 in the year 1931. The Princely State of Untadi was under the administrative control of the Baroda Agency, which was incorporated as a part of the Western India States Agency. Later the territory was merged with the state of Gujarat. The state was also a part of the Eastern Kathiawar Agency and Bhoika Thana as well.
Untadi state was a non- jurisdictionary native state. The state was claimed by more than one native rulers, who were formally addressed as shareholders. There were 2 such shareholders in Untadi. Both the shareholders of the erstwhile princely state were Jhala Rajputs, bhayats of Limbdi. The estateholders of the District Thana of Wadhwan were well learned and educated individuals who were politically aware. The native state paid annual tribute to the princely state of Junagadh. According to the Attachment Scheme of 1943, the princely state of Untadi was attached to the princely state of Limbdi. The territory was amongst of the 29 units that were attached in the initial phase of the scheme which followed the lead of Ghodasar and Bhadwa in declining to recognize the power and authority of the attaching of princely states.
The last native ruler of Untadi state acceded the princely state to the Dominion of India, also known as Union of India, after the country gained independence from the British supremacy in the year 1947. At present, Untadi state was located in the Indian state of Gujarat.