islandareas (DATA) table, bounding boxes lat lon for US Island Areas
Source:R/data_islandareas.R
islandareas.Rddata.frame of info on approximate lat lon bounding boxes around
American Samoa (AS)
Guam (GU)
the Commonwealth of the Northern Mariana Islands (Northern Mariana Islands) (MP)
the United States Virgin Islands (VI)
Note the U.S. Minor Outlying Islands (UM) are also Island Areas, but are not included in EJScreen/EJAM. They are widely dispersed, and include Midway Islands, for example.
See stateinfo2 and see info on these areas via stateinfo2[stateinfo2$is.island.areas, ]
Puerto Rico is included in both Census 2020 and ACS survey data.
The 2020 Census (Island Areas Census) did include information on AS,GU,MP,VI, but the ACS does not include Island Areas. See https://www.census.gov/programs-surveys/decennial-census/decade/2020/planning-management/release/2020-island-areas-data-products.html
For EJAM v3, AS/GU/MP/VI may appear in blockgroup datasets,
EJSCREEN export files, and map-facing blockgroup data with demographic
fields kept as NA and partial EPA environmental fields where available.
Island Area blocks are not added to EJAM's block helper datasets, so
radius/buffer analysis there should return no-data results rather than
block-weighted estimates.
See vignette("island-areas", package = "EJAM") for v3 Island Area
coverage notes and live EJSCREEN layer availability observed in May 2026.
See source package files datacreate_islandareas.R or EJAM/data-raw/datafile_islandareas.csv