The Uppsala Conflict Data Program (UCDP) at Uppsala University records a best estimate of 661 deaths from organised violence within the borders of South Sudan in 2025, in version 26.1 of its country-year dataset. Its low estimate is 621 and its high estimate is 825. The best estimate is the sum, over every event UCDP recorded, of the death toll its coders found most reliable in the source material; the low and high figures bound the reporting UCDP considered reliable at all.
UCDP attributes the best estimate to its three categories of organised violence as follows: 282 to state-based conflict — fighting over government or territory in which at least one party is the government of a state — with a low estimate of 277 and a high estimate of 446; 361 to non-state conflict — fighting between organised armed groups, neither of which is the government of a state — with a low estimate of 326 and a high estimate of 361; 18 to one-sided violence — the use of armed force by a government or an organised group against civilians — with a low estimate of 18 and a high estimate of 18. These are UCDP's categories and UCDP's attribution. This brief does not name any party to the violence.
In the same version of the dataset UCDP's best estimate for South Sudan in 2024 is 697 deaths, with a low estimate of 623 and a high estimate of 702, so the 2025 best estimate is 36 fewer than the year before. That is the difference between two estimates whose ranges may overlap, not a measured change. UCDP revises earlier years in each release, so its figure for 2024 may differ from what it published a year ago. No percentage change is given.
These figures are counts of deaths that UCDP's researchers identified in news reports and other published sources, and they are estimates, not a register of deaths. UCDP states that it is highly conservative in counting fatalities, and its country totals include only violence tied to a conflict or actor that has at some point reached its threshold of 25 deaths in a calendar year, so the figure is best read as a floor. It covers violence within the country's borders whoever the parties were, and says nothing about violence elsewhere in which the country's government took part.
This brief reports the figures UCDP published and nothing beyond them. It does not report who was killed, by whom, or why; it does not establish what any party to a conflict did or intended; and it does not attribute the figure, or any change in it, to any policy, event or decision.