The weekly average rate borrowers were quoted on Zillow Mortgage Marketplace for thirty-year mortgages remained relatively flat during the past week. Last week's rate was 5.10 percent, up slightly from 5.08 percent the week prior, according to the Zillow Mortgage Rate Monitor, compiled by leading real estate Web site Zillow.com®. Meanwhile, rates for 15-year fixed mortgages decreased to 4.73 percent, down from 4.77 percent and 5-1 adjustable rate mortgages also decreased, down to 4.65 percent from 4.71 percent the week prior.

Rates for 30-year fixed purchase mortgages fell on Monday evening, with the average rate on Zillow Mortgage Marketplace at 5.02 percent.

Thirty-year fixed mortgage rates varied by state. Massachusetts mortgage rates , Georgia mortgage rates, Minnesota mortgage rates, New Jersey mortgage rates and Pennsylvania mortgage rates increased the most, up from 5.10 percent to 5.15 percent in Massachusetts, from 4.96 percent to 5.00 percent in Georgia, from 5.06 percent to 5.10 percent in Minnesota, from 5.08 percent to 5.12 percent in New Jersey and from 5.05 percent to 5.09 percent in Pennsylvania. Georgia mortgage rates (5.00%) and Texas mortgage rates (5.05%) were the lowest in the country while Ohio mortgage rates (5.22%) were the highest. California mortgage rates were the most requested among all states.