The 30-year, fixed-rate mortgage remained steady from the two weeks past, ending at a 4.14% national average, according to the Zillow Mortgage Marketplace weekly update. Zillow said the average current 15-year, fixed rate is still 3.6% and the rate for a 5-1 adjustable rate mortgage is 2.96%. That type of mortgage maintains a steady rate for five years and then is adjusted annually thereafter. Regionally, 30-year rates vary, as states on the East Coast witnessed great fluctuation. Massachusetts average rate for 3-year FRMs is down 17 basis points to 4.07% from 4.24% while New York's rate jumped 13 basis points to 4.28% form 4.15%. California's average rate rose to 4.15% last week, up from 4.12% as did rates in Colorado, up to 4.14% from 4.13% the previous week. Washington saw its average rate drop to 4.09% from 4.14%. Rates in Pennsylvania and New Jersey remained unchanged at 4.11% and 4.14%, respectively. 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.