Sorry that you feel this way, Malangali. I don't suppose that I can persuade you, but I did try and do my homework. Iringa is not offically designated a city at present (unlike Mwanza, Dar and Arusha); you asserted this in the article, but it is simply factually incorrect. A seperate question is whether Iringa can be referred to as a city outside of the Tz government's definition. OK. First, I assure you that "urban" can imply either town or city, particularly when contrasted with "rural": see urban area. I checked two English language travel guides for Tanzania, both of whom use "town". Moreover, I contacted some Tanzanians in Iringa, who agreed that it was "town" rather than a "city" (not that personal anecdotes are a reliable source in Wikipedia, just to try and convince you that the "town" thing is not just from some deluded mzungu insisting on a patronising colonial viewpoint, or whatever it is you've decided I am doing).
 I don't believe in individual ownership of Wikipedia articles. However, "city" is not the best word here, and it's entirely reasonable for me to oppose it. Again, I regret clashing with you on this, and I'm very happy to discuss and change my mind on things, and I'm glad you've improved this article, but I'm afraid I will not simply agree with whatever you say just because I'm English and you (I presume) are a Tanzanian.