Urban Chickens

A USDA report on urban chickens (from a survey conducted in four US cities): 


Overall, 0.8 percent of all households (0.6 percent of all households excluding single-family homes on 1 acre or more) owned chickens. Chickens were ownedon 4.3 percent of single-family homes on 1 acre or more. Excluding single-family homes on 1 acre or more, the percentage of households with chickens ranged from 0.1 percent in New York City to 1.3 percent in Miami.
While less than 1 percent of households had chickens, nearly 4 percent of households without chickens planned to have chickens within the next 5 years, illustrating the growing acceptance of urban farming (range: 2.0 percent of households in New York City to 7.4 percent in Denver).
Overall, about 4 of 10 respondents were in favor of allowing chickens in their communities and would not mind if their neighbors owned chickens (44.4 and 39.3 percent, respectively). These percentages were inversely related to the age of the respondent. Denver had the highest percentage of respondents in favor of allowing chickens in the community (62.5 percent).
Although over half of respondents (55.6 percent) believed that chickens in urban areas will lead to more illnesses in humans, about two-thirds of respondents in Los Angeles, Miami, and New York City and three-fourths of respondents in Denver believed that eggs from home-raised chickens are better for you than eggs purchased at a grocery store. Denver respondents were the least likely to believe that chickens in urban areas will lead to more illnesses in humans.