Plains Divergence, Himalayan Convergence: Explaining the Contrasting Inter-State Inequality Dynamics in Northern India

Abstract

This study examines the sharply contrasting inter-state inequality dynamics in northern India between 2011–12 and 2023–24. Among the three major Northern Plains states (Haryana, Punjab, and Uttar Pradesh), per capita income divergence widened significantly: Haryana’s per capita NSDP rose to 3.48 times that of Uttar Pradesh and 66% higher than Punjab, with the Theil Index for the cluster increasing from 0.099 to a peak of 0.124. In contrast, the three principal Himalayan states (Himachal Pradesh, Uttarakhand, and Jammu & Kashmir) exhibited remarkable stability and mild convergence, with the Theil Index never exceeding 0.039 and declining after 2015–16; by 2023–24, Himachal Pradesh and Uttarakhand achieved near parity in real per capita incomes. Using GSDP/NSDP data at current and constant prices, compound annual growth rates, inter-state disparity ratios, and Theil Index decompositions, the paper demonstrates that national shocks (demonetisation, GST, and COVID-19) amplified pre-existing structural differences on the plains—driving agglomeration-led growth in Haryana, prolonged stagnation in Punjab, and gradual catch-up in Uttar Pradesh—while geographic constraints, small market size, and heavy dependence on central transfers imposed a low but relatively equal growth ceiling across the Himalayan states. The findings challenge conventional convergence expectations, highlight the mediating role of geography on economic structure and policy transmission, and underscore the need for regionally differentiated strategies to address persistent divergence on the plains and raise the common growth trajectory in the Himalayas.