A universal healthcare coverage program has been implemented in Thailand since 2001 and the Thailand Ministry of Public Health (MOPH) is restructuring its health information systems to support the management of this reform. The MOPH believes that health information technology (IT) is fundamental to the development of an effective health information system, and that users' adoption of health IT is one of the most important factors to the success of health IT implementation projects. However, there is no national data available regarding the penetration and adoption of health IT in Thai community health centers (CHCs). This cross sectional survey was designed to study the penetration and adoption of health IT in the country's community health centers. A random sample of 1,607 regionally stratified CHC's from a total of 9,806 CHCs was selected. With an 82% response rate, the data showed that people who worked in CHCs were currently heavy users of health IT. They exhibited high IT acceptance and positive attitudes toward using health IT. CHCs' staff was less resistant to adopt health IT than previously anticipated. These results are similar in all of the country's geographic regions. Health IT is pervasive in CHCs across the country and penetrates all regions.