Willdan Group, Inc. revenue for the last year amounted to 269.68 M USD, the most of which — 426.98 M USD — came from its highest performing source at the moment, Energy, the year earlier bringing 357.46 M USD. The greatest contribution to the revenue figure was made by United States — last year it brought Willdan Group, Inc. 510.10 M USD, and the year before that — 429.14 M USD.