As government tries to grapple with the economic crises the FHA loan limits have changes 3 times in recent months. Once they were decreased and twice they were increased. At the present time the FHA Mortgage Limits in Denver are at $406,250 and the new 1-family limit for Boulder County is $460,000. Limits are higher for 2, 3, and 4-family properties.
FHA provides a website with the current Mortgage Loan limits for each county in the country. You can find it here.