Willdan Group, Inc. revenue for the last year amounted to 296.32 M USD, the most of which — 473.31 M USD — came from its highest performing source at the moment, Energy, the year earlier bringing 426.98 M USD. The greatest contribution to the revenue figure was made by United States — last year it brought Willdan Group, Inc. 565.80 M USD, and the year before that — 510.10 M USD.