The datasets for this investigation consist of microtremor array data collected at sites in San Jose, California, Pleasanton, California, and synthetic microtremor array data created as part of a blind shear-wave velocity modeling study as part of the Third International Symposium on the Effects of Surface Geology on Seismic Motion (ESG2006), Grenoble, France, 30 August - 1 September 2006. The data from site STGA in San Jose, consisting of seven sensors used in the paper, are available from the Incorporated Research Institutions for Seismology (IRIS) through a request form at http://ds.iris.edu/ds/nodes/dmc/forms/assembled-data/?dataset_report_number=04-016. An associated report for these data available at http://ds.iris.edu/data/reports/2004/04-016/04-016.pdf. The data from the Pleasanton array are also available from the IRIS data management center through the website http://ds.iris.edu/mda/GS. The data accessible from this link that were used in the manuscript can be obtained through the subdirectories for stations PN1, PN2, PO1, PO2, PO3, PP22, and PP3 used in our investigation. The synthetic data created for the ESG2006 conference are presented and described in Cornou and others (2006). Reference: Cornou, C., Ohrnberger, M., Boore, D.M., Kudu, K., and Bard, P-Y., 2006, in P-Y Bard, E. Chaljub, C. Cornou, F. Cotton and P. Gueguen, eds, Proceedings of the Third International Symposium on the Effects of Surface Geology on Seismic Motion (ESG2006), Grenoble, France, 30 August - 1 September 2006, vol. 2, LCPC, Paris, p. 1127-1217.