According to the 2011 Census of India, the municipal boundaries of Una city recorded a population of approximately 18,722 residents, though the wider urban agglomeration and district population are significantly larger. The city has experienced steady growth over the last decade due to its role as a commercial and educational hub.
The population is predominantly Hindu, with a significant and vibrant Sikh minority, reflecting the city's shared cultural border with Punjab. The literacy rate in Una is impressively high, routinely exceeding 86%, which is above the national average. The primary languages spoken are Hindi, Punjabi, and local Pahari dialects such as Kangri.
