I'm not sure that much has changed in ten years:
A common stereotype is that City fans come from Manchester proper, while United fans come from elsewhere. A 2002 report by a researcher at Manchester Metropolitan University found that while it was true that a higher proportion of City season ticket holders came from Manchester postcode areas (40% compared to United's 29%), there were more United season ticket holders, the lower percentage being due to United's higher overall number of season ticket holders (27,667 compared to City's 16,481); not highlighted in the report was that within the City of Manchester itself, there were more City season ticket holders (approximately 4 for every 3 United). The report warned that since the compiling of data in 2001, the number of both City and United season ticket holders had risen; expansion of United's ground and City's move to the City of Manchester Stadium have caused season ticket sales to increase further.
<a class="postlink" href="http://www.e-space.mmu.ac.uk/e-space/bitstream/2173/12506/1/seasonticketreport%20-%20brown1.pdf" onclick="window.open(this.href);return false;">http://www.e-space.mmu.ac.uk/e-space/bi ... brown1.pdf</a>