Islandia, New York
35 topographic sheets cover this place, the earliest surveyed in 1902 and the latest in 1984. It stands in Islip town. It lies in ZIP code area 11749. The Survey maps it on the Central Islip quadrangle. 3,567 people lived here at the 2020 count. It stands 66 feet above sea level.
Then and now
1902 to 1984The same ground, surveyed 82 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.


Population over time
2 figuresIslandia grew from 3,335 to 3,567 between 2010 and 2020. These are the recorded population figures Wikidata holds for this place, reached through the Geographic Names Information System number this page is keyed on rather than by name, so they belong to this place and not to another of the same name. Most are census counts, but not all are: an early figure may be a founding or settlement estimate, and an estimate published within five years of a census is left out. The change column is computed, and is left blank where more than 20 years separate a figure from the one before it, because a gap that long is not a change between two counts.
| Year | People | Change |
|---|---|---|
| 2010 | 3,335 | |
| 2020 | 3,567 | +232 (+7%) |
Topographic sheets covering this place
16 surveys from 35 printed sheetsMatched by testing this settlement's coordinate against the published boundary of every sheet in the United States Geological Survey's historical collection. Each opens the scanned sheet at the Survey.
- 1902 USGS Setauket quadrangle1:62500
- 1904 USGS Islip quadrangle1:125000, 5 printings
- 1904 USGS Setauket quadrangle1:62500, 7 printings
- 1919 USGS Setauket quadrangle1:62500
- 1942 USGS Islip quadrangle1:125000
- 1947 USGS Central Islip quadrangle1:24000
- 1949 USGS New York quadrangle1:250000
- 1954 USGS New York quadrangle1:250000, 2 printings
- 1956 USGS Central Islip quadrangle1:24000, 2 printings
- 1956 USGS Setauket quadrangle1:62500
- 1957 USGS New York quadrangle1:250000
- 1958 USGS New York quadrangle1:250000, 3 printings
- 1960 USGS New York quadrangle1:250000, 2 printings
- 1967 USGS Central Islip quadrangle1:24000, 4 printings
- 1969 USGS New York quadrangle1:250000
- 1984 USGS Long Island West quadrangle1:100000, 2 printings
Fires near this place
1,182 since 1992Regional context, not property-specific evidence. The federal wildfire occurrence database lists 1,182 fires within 5 miles of Islandia between 1992 and 2020, burning about 758 acres in total. 98 started naturally. 274 were recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.
| Reported cause | Fires |
|---|---|
| Missing data/not specified/undetermined | 644 |
| Arson/incendiarism | 274 |
| Natural | 98 |
| Smoking | 71 |
| Equipment and vehicle use | 28 |
| Misuse of fire by a minor | 27 |
| Debris and open burning | 24 |
| Power generation/transmission/distribution | 10 |
| Recreation and ceremony | 5 |
| Railroad operations and maintenance | 1 |
The most recent of them, most recent first, with the day each was reported and the service that recorded it.
| Date | Cause | Size | Reported by | Name on the report |
|---|---|---|---|---|
| 9 September 2009 | Missing data/not specified/undetermined | under an acre | Fire Department of New York | not named |
| 9 September 2007 | Missing data/not specified/undetermined | under an acre | Fire Department of New York | not named |
| 9 September 2002 | Missing data/not specified/undetermined | under an acre | Fire Department of New York | not named |
| 8 September 2010 | Smoking | under an acre | Fire Department of New York | not named |
| 8 September 2001 | Arson/incendiarism | under an acre | Fire Department of New York | not named |
| 7 September 2014 | Missing data/not specified/undetermined | under an acre | Fire Department of New York | not named |
| 7 September 2009 | Missing data/not specified/undetermined | under an acre | Fire Department of New York | not named |
| 7 September 2005 | Missing data/not specified/undetermined | under an acre | Fire Department of New York | not named |
Settlements close enough to share some of these fires:
Mines and quarries near this place
6 within 5 milesRegional context, not property-specific evidence. The federal mineral resources record lists 6 workings within 5 miles of Islandia: 4 past producers, 1 unknown, 1 producer. 1 still produces. What was taken out: Sand and Gravel, Construction, Clay. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.
| Where | Site | Commodity | Status | Recorded |
|---|---|---|---|---|
| Nassau Clay Mine | Clay | Past Producer | Sedimentary | |
| Nassau Clay Mine | Clay | Past Producer | ||
| Kings Park Pit | Sand and Gravel, Construction | Producer | ||
| Smithtown Pit | Sand and Gravel, Construction | Past Producer | ||
| Smithtown Plant | Sand and Gravel, Construction | Past Producer | Sedimentary | |
| Split Rock Mine | Sand and Gravel, Construction | Unknown |
Nearest settlements
The eight closest, with where each one stands in the county. Distances are straight-line, computed from the Geographic Names Information System coordinates.
| Map | Place | Distance | Sheets |
|---|---|---|---|
| Central Islip | 2.0 miles | 35 | |
| Hauppauge | 2.3 miles | 35 | |
| East Hauppauge | 2.3 miles | 35 | |
| Lakeland | 2.6 miles | 33 | |
| Lake Ronkonkoma | 2.9 miles | 35 | |
| Ronkonkoma | 3.1 miles | 33 | |
| Nesconset | 3.4 miles | 35 | |
| East Brentwood | 3.4 miles | 35 |
Elsewhere
Matched on this settlement's Geographic Names Information System number rather than its name, so it cannot be a different place of the same name in another state.
| Wikipedia article on Islandia | An encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied. |
| Wikidata item Q3452395 | The structured record the population and elevation above come from. Public domain (CC0). |
Provenance
This settlement is recorded in the Geographic Names Information System as feature 979937. The sheet list is computed by point-in-boundary test against the United States Geological Survey's historical topographic inventory. Both are works of the United States government and carry no copyright under 17 U.S.C. 105.
Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.















