Milgram (4) has suggested that the information overload attending city life reduces helping behavior. This study compared the willingness of male and female urbanites and suburbanites ro help another male or female in distress. It also compared the helpfulness of people contacted at work or in their apartments or single-family dwellings. On five consecutive weekday evenings, between 6 and 9 P.M., 10 males and 10 females each phoned a person working at a commercial enterprise or else living in an apartment or single-family dwelling in either Dayton, Ohio (population = 243,601), or one of five suburbs (mean population = 21,614). One hundred phone numbers had been selected at random from the metropolitan directory for the Dayton area, and callers were ignorant of the residential location of those phoned. Following Gaertner and Bickman (3), each caller pretended to have gotten a wrong number after being stalled at a rest stop on nearby Interstate 75, and the caller then requested the respondent to call his (or her) spouse. When respondents complied with this request, an accomplice of the opposite sex answered the phone and rhanked the caller. Only 41 males and 53 females could be reached. Male respondents aided 56% of the male callers and 72% of the female callers, while female respondents aided 65% of the male callers and 94% of the female callers. Thus, while males and females did not differ in helping, females were helped more than were males (xa = 18.8, df = 1, fi < .05), especially when [he respondent was a female (x' = 5.56, df = 1, p < .05). Helping rates were SO%, 73%, and 64% for apartments, single-family dwellings, and commercial sites, ~especc~vely, in Dayton; for the same sites in suburbs they were 67%, 76%, and 61%. Neither type of residence, its location, nor the combination of the two obtained significance by x' analyses. The results replicate oft-noted sex differences in helping (1). Interestingly, even though Dayton and its suburbs differ in socio-economic factors as well as density and urban status, no differences in altruism rates were noted. The failure to observe different rates of helping, however, is consistent with the view that urban-suburban differences in behavior have been overemphasized (2).