1970: $ 1 BILLION
1980: $ 4 BILLION
1990: $ 6 BILLION
2000: $ 8 BILLION
2010: $13 BILLION
2013: $10 BILLION
2014: $11 BILLION
2015: $12 BILLION CHART
2016: $14 BILLION (ESTIMATE)
2017: $15 BILLION (ESTIMATE)
Employees: 67,000 in 2,400 offices across the nation.
The listing to the right shows the FIRST TIER department structure of the Department of the Interior: 14 departments.
On the next page is a list of these same departments, and most sub-departments.
Note: The organization information on this page and the next page comes from the DOI website and its site map, the DOI organizational chart, and the DOI's list of Key Officials.
The source for budget data on this page is available as an Excel spreadsheet from the Office of Management & Budget at
NOTE: The best collection of federal $DATA$ on the web can be found at usgovernmentspending.com