The present study explored the prevalence and descriptive characteristics of hyperacusis, defined as unusual intolerance of ordinary environmental sounds. Two ways of collecting data were used in the study: the first was a postal survey of a random sample, to which 589 responded (59.7% response rate); the second was the internet, and 595 self-recruited individuals responded to a call for participants via a banner on a web page (51.9% response rate). The point prevalence rates of hyperacusis were 9% in the internet group and 8% in the postal group. Exclusion of participants who reported hearing impairment resulted in point prevalence rates of 7.7% (n = 39) and 5.9% (n = 28) respectively. The data collection format did not result in any substantial differences. Hyperacusis was associated with concentration difficulties, use of ear protection, avoidance, tension, and sensitivity to light/colours. The present data suggest that hyperacusis is a common problem.