July 7 (Bloomberg) -- U.S. retailers’ sales are growing at the fastest pace in four years, a sign consumers may be overcoming concern about unemployment and depressed home values.

Sales probably expanded at an average monthly rate of 4 percent in the first five months of the retail fiscal year that began Jan. 31, the biggest gain since 2006, the International Council of Shopping Centers trade group said in advance of its June report tomorrow. Nordstrom Inc. and Kohl’s Corp. are among chains that will report June sales increases at stores open at least a year, according to analysts’ estimates.