Packwood is a city in Jefferson County, Iowa, United States. The population was 183 at the time of the 2020 census. The Burlington and Western Railway arrived in Packwood in late 1882. This was a narrow gauge line, widened to standard gauge in 1902 and taken over by the Chicago, Burlington and Quincy, and then sold to the Minneapolis and St. Louis in 1934.

Jefferson County is a county located in the U.S. state of Iowa. As of the 2020 United States Census, the population was 15,663. The county seat is Fairfield. The county was formed in January 1839, and was named for U.S. President Thomas Jefferson.