The 30-year, fixed-mortgage rate decreased from a week earlier, setting a new record low at 4.16%, according to the Zillow Mortgage Marketplace weekly update. The national average ticked up slightly throughout September after 11 consecutive weeks of decline. Zillow said the current 15-year, fixed average rate is 3.67% and the rate for a 5-1 adjustable rate mortgage is 3.01%. That type of mortgage maintains a steady rate for five years and then is adjusted annually thereafter. Regionally, 30-year rates vary, but the majority of states witnessed a deflation. Rates in Florida fell to 4.09% from 4.23% the previous week, New York’s average rate was 4.04% last week, down from 4.17%, California’s rate decreased to 4.18% from 4.21%, and Texas saw its average rate disintegrate to 4.15% from 4.22%. Meanwhile Pennsylvania’s current rate of 4.17% is up from 4.16% last week. Massachusetts’ average rate for a 30-year fixed mortgage grew to 4.22% from 4.19% at Sept. 27. Washington’s 30-year FRM remained constant at 4.16%. Zillow bases its averages on real-time mortgage quotes from lenders registered with the company. The national average comes from thousands of daily quotes by anonymous borrowers through the Seattle-based company’s website. Write to Christine Ricciardi.