Look here if you are specifically searching for barley flour. Major Retailers Carrying Barley
You can find barley at most national and regional grocery chains. Availability often includes: where to buy barley in grocery store
In most grocery stores, barley is typically found in the alongside rice, oats, quinoa, and farro. Depending on the store's layout, it may also be stocked in the soup or bean aisle near dried lentils and peas. Where to Look in the Store Look here if you are specifically searching for barley flour
This is the most common home for bagged grains like pearl barley. where to buy barley in grocery store