eCFR Atlas
API

Federal agency

Department of Interior

DOI

Total regulationⓘ

42,203

Every rule this agency manages, in words — rules managed jointly with another agency count in full.

Share of all regulationⓘ

42,171

Jointly managed rules are split evenly between their agencies, so shares can be fairly compared across agencies.

Including sub-agencies

5,559,657

Rolled up across 15 sub-agencies.

Areas managed

4

4 measured.

Rules this agency manages

Citation Rule area Level Words Also managed by Official text
2 CFR Chapter XIV Chapter XIV—Department of the Interior chapter 10,401 — eCFR ↗
5 CFR Chapter XXV Chapter XXV—Department of the Interior chapter 2,955 — eCFR ↗
41 CFR Chapter 114 Chapter 114—Department of the Interior chapter 63 — eCFR ↗
48 CFR Chapter 14 Chapter 14—Department of the Interior chapter 28,784 — eCFR ↗

“Level” is the narrowest level the reference actually names. A reference that names both a chapter and a part is a part-level reference and is counted as one.

Sub-agencies

Amendment activity

Sections amended in parts administered by Department of Interior 5 amendments, Oct 2023 – Sep 2026
Oct 2023 Sep 2026

15 further amendments in these titles carry no part identifier and cannot be attributed to a specific scope, so they are excluded from the chart rather than assigned to one.

Attribution is exact, not estimated: each scope is expanded to the set of parts inside it in the current structure, and only amendments to those parts are counted. Dated by issue date, not amendment date — the two differ in about half of all rows.