Mortgage rates have remained relatively flat over the past week, with rates for 30-year fixed mortgages increasing slightly to 5.78 percent, up from 5.77 percent the week prior according to the Zillow Mortgage Rate Monitor, compiled by leading real estate Web site Zillow.com(R).

Mortgage rates for 15-year fixed and 5-1 adjustable rate mortgages have remained steady at 5.42% and 5.47 percent, respectively.

At a state level, the 30-year fixed rate mortgage rate in Arizona saw the most significant drop from 5.76 percent to 5.69 percent, while in Maryland the 30-year fixed mortgage rate increased from 5.81 percent to 5.91 percent. Rates on 30-year fixed mortgages were lowest in the states of Colorado (5.68%) and Arizona (5.69%), while New York (5.93%) and Maryland (5.91%) had the highest rates.