A collection of BIA produced web maps that allow for an online interactive display of geographic information.
A collection of BIA produced, static maps, produced to display a variety of geographic information in various file formats.
A collection of BIA maintained, and web-hosted GIS datasets, made available for public consumption.
Public REST Services
A collection of REST endpoints maintained and made available for public consumption.
Frequently asked questions and answers regarding BOGS GIS maps and geospatial data.
File name: BIA_AIAN_LAR_National
Available Formats: REST
The purpose of the American Indian and Alaska
Native Land Area Representation (AIAN-LAR) Geographic
Information System (GIS) dataset is to depict the external
extent of Federal Indian reservations and the external extent
of associated land "held in trust” by the United States,
“restricted fee” or “mixed ownership” status for Federally
recognized tribes and individual Native Americans. This dataset
includes other land area types such as Public Domain
Allotments, Dependent Indian Communities and Homesteads.
GIS Dataset is prepared strictly for illustrative and
reference purposes only and should not be used, and is not
intended for legal, survey, engineering or navigation
No warranty is made by the Bureau of Indian Affairs
(BIA) for the use of the data for purposes not intended by the
BIA. This GIS Dataset may contain errors. There is no impact
on the legal status of the land areas depicted herein and no
impact on land ownership. No legal inference can or should be
made from the information in this GIS Dataset. The GIS Dataset
is to be used solely for illustrative, reference and
statistical purposes and may be used for government to
government Tribal consultation.
Reservation boundary data is
limited in authority to those areas where there has been
settled Congressional definition or final judicial
interpretation of the boundary. Absent settled Congressional
definition or final judicial interpretation of a reservation
boundary, the BIA recommends consultation with the appropriate
Tribe and then the BIA to obtain interpretations of the
The land areas and their representations
are compilations defined by the official land title records of
the BIA which include treaties,
statutes, Acts of Congress, agreements, executive orders,
proclamations, deeds and other land title documents. The
trust, restricted, and mixed ownership land area shown here,
are suitable only for general spatial reference and do not
represent the Federal government’s position on the
jurisdictional status of Indian country. Ownership and
jurisdictional status is subject to change and must be
verified with plat books, patents, and deeds in the
appropriate Federal and state offices.
Included in this
dataset are the exterior extent of off-reservation trust,
restricted fee tracts and mixed tracts of land including
Public Domain allotments, Dependent Indian Communities,
Homesteads and government administered lands and those set
aside for schools and dormitories. There are also land areas
where there is more than one tribe having an interest in or
authority over a tract of land but this information is not
specified in the AIAN-LAR dataset. The dataset includes both
surface and subsurface tracts of land (tribal and individually
held) “off-reservation” tracts and not simply off-reservation
“allotments” as land has in many cases been subsequently
acquired in trust.
These data are public information and may
be used by various organizations, agencies, units of
government (i.e., Federal, state, county, and city), and other
entities according to the restrictions on appropriate use.
It is strongly recommended that these data be acquired directly
from the BIA. Other sources may offer similar data that are claimed
to be based on the BIA data, but these alternative data may be
subject to possible alterations that might have reduced their
accuracy. Integrating land areas into another dataset and attempting
to resolve boundary differences between other entities may produce
inaccurate results. It is also strongly recommended that
careful attention be paid to the content of the metadata file
associated with these data. Users are cautioned that digital
enlargement of these data to scales greater than those at
which they were originally mapped can cause misinterpretation.
The BIA AIAN-LAR dataset’s spatial accuracy and attribute
information are continuously being updated, improved and
used as the single authoritative land area boundary data for
the BIA mission. These data are available through the Bureau
of Indian Affairs, Office of Trust Services, Division of Land
Titles and Records, Branch of Geospatial Support.
File name: BIA_Offices
Available Formats: SHP, GDB, KMZ, JSON, REST
Delivery of program services to the Federally-recognized tribes and individual Native Americans and Alaska Natives, whether directly or through contracts, grants or compacts, is administered by the twelve Regional offices and 83 agencies that report to the BIA Deputy Director-Field Operations located in Washington, D.C. Each Regional office is headed by a Regional Director who is responsible for all BIA activities within a defined geographical area except education, law enforcement and functions of an administrative nature. The typical Regional Office includes a Deputy Regional Director for Trust Services and Deputy Regional Director for Indian Services. The twelve Regional offices are located in the heart of Indian country with the agencies located at the reservation level. These Regional offices services the needs of specific tribes. The BIA Central Office oversees all the Regional offices and is also included in this file.
File name: BIA_Regions
Available Formats: SHP, GDB, KMZ, JSON, REST
There are a total of twelve Regional boundaries where the delivery of program services to the Federally-recognized tribes and individual Native Americans and Alaska Natives, whether directly or through contracts, grants or compacts, is administered by the twelve Regional offices and 83 agencies that report to the BIA Deputy Director-Field Operations located in Washington, D.C. For the Region boundaries that did not adhere to state boundaries, a buffer was applied to include specific tribal properties.
- Denotes a map product or dataset that is actively updated or maintained on a schedule and is subject to change. Please refer to the date produced on the map product or metadata associated with the dataset for when the product was last updated.
- Denotes a map product or dataset that is no longer updated or maintained on a schedule. These map products and datasets are made available for legacy purposes only and they may contain inconsistencies when compared to more recent, actively maintained map products or datasets.