CHEYENNE, Wyo. (AP) — Redrawing congressional boundaries every 10 years is a hotly contested process in many places — but not Wyoming, the nation's least-populated state.

The 2010 census counted 568,300 Wyoming residents. That keeps the state solidly among the six others with only a single congressional district.

Many congressional districts nationally are drawn with oddly shaped, or "gerrymandered," boundaries so they can encircle certain blocs of voters.

Not so in Wyoming, where the boundaries of the state's at-large congressional district are the same as Wyoming's neatly rectangular state boundaries. The other rectangular state, Colorado, contains seven congressional districts.

Wyoming doesn't have the least-populated congressional district, however. Each of Rhode Island's two congressional districts has fewer people than Wyoming's population.

Montana's at-large district is the largest in population with just shy of 1 million people.