This text presents econometric methods for the analysis of event counts. It reviews recent literature and introduces several new results. While the emphasis is on methods for cross-section data, the modelling of time series and panel count data is also discussed. Topics covered include dependent processes, unobserved heterogeneity, selectivity and endogeneity, underreporting and Bayesian inference. Methodological and practical aspects are combined in an application dealing with the determinants of individual labour mobility.