Sorry that no one from our area has answered your question. I am an agent in the Santa Maria area and just found these questions through some training on this site. I will be happy to answer any questions that you may have for this area. If you are working with another local agent, please contact them, otherwise, I am here for you.
I am not sure where you are moving from, but our utility bills here are relatively low compared to a lot of areas. The most expensive one is probably the electric bill. The utilities are paid separately with the exception of water and sewer are together in Orcutt area and water, sewer, and trash in Santa Maria area. Example for our bills in the Santa Maria area is:
Electric - $100-$120 (but we run our office from our home w/2 computers and a server, extra lights on, etc).
Gas - $30-$40 (maybe higher in the winter with the heater and doing more cooking than we do).
Water, Sewer, Trash - $100 (maybe a bit more for Orcutt and depending on the size yard for water, and I believe the trash is a bit more).
If you could email me at firstname.lastname@example.org, I could send you the numbers for the utility companies and cable, post office, etc and you could call and ask them for a better estimate.
Good luck and if you ever decide to buy a home, please contact me and I would be more than happy to help you. I also have a partner that is a reputable lender and can pre-qualify you for a sales price and payment that works for you.