It's complicated. The U.S. Department of Housing and Urban Development calculates a "median family income" every year for every county in the United States. For Humboldt County, the 2011 MFI is $54,900. But that median changes depending on family size, so whether you are low income depends on how much money all the people living with you make, combined. Then, the feds group your household into "low" "very low" and "extremely low." Follow our chart to see where you fit.