Stupid CoWorkers

I work at a transportation company in nothern California. I have been here for just over 4 years. Im a young person in my early twenties, and most of my co workers are female and between the ages of 50 and 65. With the exception of one woman, these other women are the most idiotic people I have ever met in my life. They do their jobs half assed and try to make me cover the rest. At the same time they are giving over their responsibilities to me they are talking about me non stop- about my clothes, tattoos, etc.. And how I dont understand their point of view because I am so young. They are completely conservative and close minded.