There was a total of almost $34 million of land and rural real estate for sale in Rosebud County, Montana, recently on Land.com. The total acreage of all Rosebud County farms, ranches, hunting land and other land for sale was 100,000 acres. Rosebud County ranks 41st based on the total acres of land for sale among all the counties in Montana. Forsyth had the most land for sale. Economically speaking, Rosebud County's is largely dependent on mining and mineral extraction-related businesses and services. Rosebud County is one of the ten biggest counties in Montana (5,025 square miles). It's located in the Southeast Montana region of Montana.