How many one dollar bills come in a bank bundle?

There are 100 US $1 bills in a bank strap. All bills are put in straps of 100, then bundles of 10 straps, and 4 bundles, to form a "brick" of 4000 bills.

The use of $50 bundles and other sizes are for customer convenience.

When circulated one-dollar bills are bundled, the bundle size can be 25, 50, 100, 200, 0r 250 for one-dollar bills, using color-coded straps that are, respectively, black, orange, blue, green, and pink.