In this paper we report on an empirical study of the population distributions of conditioned laser damage thresholds on antireflection (AR) coated BK-7 glass while varying the laser spot size. Two different 1.06 μm AR coating designs were tested. All damage tests were conducted at the design wavelength of 1.06 μm. To obtain the population distribution, 20 determinations of the conditioned damage threshold were performed. This procedure was repeated for each spot size on each of the samples. For control purposes, the unconditioned damage threshold was also measured for each spot size and coating design. The data was analyzed statistically by describing the population distribution and testing for differences as a function of spot size and coating design.